From 11e2eda72aaad9671f26fac1732d5f0b6dc0a313 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Thu, 25 Mar 2021 17:29:56 -0700
Subject: [PATCH 01/13] docs(CHANGELOG): update for v0.8.0

---
 CHANGELOG.md             | 26 ++++++++++++++++++++++++++
 message/pb/message.pb.go |  5 +++--
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e0afbe4c..a09ca864 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,31 @@
 # go-graphsync changelog
 
+# go-graphsync 0.8.0
+
+This release updates to the v0.9.0 branch of go-ipld-prime and adds a "trusted store" optimization that may produce important speed improvements.
+
+It also includes several improvements to the internal testplan & updated
+architecture docs.
+
+### Changelog
+
+- github.com/ipfs/go-graphsync:
+  - Update for LinkSystem (#161) ([ipfs/go-graphsync#161](https://github.com/ipfs/go-graphsync/pull/161))
+  - Round out diagnostic parameters (#157) ([ipfs/go-graphsync#157](https://github.com/ipfs/go-graphsync/pull/157))
+  - map response codes to names (#148) ([ipfs/go-graphsync#148](https://github.com/ipfs/go-graphsync/pull/148))
+  - Discard http output (#156) ([ipfs/go-graphsync#156](https://github.com/ipfs/go-graphsync/pull/156))
+  - Add debug logging (#121) ([ipfs/go-graphsync#121](https://github.com/ipfs/go-graphsync/pull/121))
+  - Add optional HTTP comparison (#153) ([ipfs/go-graphsync#153](https://github.com/ipfs/go-graphsync/pull/153))
+  - docs(architecture): update architecture docs (#154) ([ipfs/go-graphsync#154](https://github.com/ipfs/go-graphsync/pull/154))
+
+### Contributors
+
+| Contributor | Commits | Lines ± | Files Changed |
+|-------------|---------|---------|---------------|
+| Hannah Howard | 5 | +885/-598 | 55 |
+| dirkmc | 1 | +79/-50 | 2 |
+| Aarsh Shah | 1 | +2/-6 | 2 |
+
 # go-graphsync 0.7.0
 
 This is a small release to update some dependencies. Importantly, it pulls in go-ipld-prime with
diff --git a/message/pb/message.pb.go b/message/pb/message.pb.go
index 367f4350..2a440bd5 100644
--- a/message/pb/message.pb.go
+++ b/message/pb/message.pb.go
@@ -7,12 +7,13 @@
 package graphsync_message_pb
 
 import (
+	reflect "reflect"
+	sync "sync"
+
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
 )
 
 const (

From 544317c62463597fab9b295d5258e209dfc14d11 Mon Sep 17 00:00:00 2001
From: Aarsh Shah <aarshkshah1992@gmail.com>
Date: Wed, 18 Aug 2021 08:55:51 +0530
Subject: [PATCH 02/13] log in-memory usage

---
 .../unverifiedblockstore/unverifiedblockstore.go   | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
index 56d2e1e8..dbcf0377 100644
--- a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
+++ b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
@@ -2,10 +2,13 @@ package unverifiedblockstore
 
 import (
 	"fmt"
+	logging "github.com/ipfs/go-log/v2"
 
 	ipld "github.com/ipld/go-ipld-prime"
 )
 
+var log = logging.Logger("gs-unverifiedBlockStore")
+
 type settableWriter interface {
 	SetBytes([]byte) error
 }
@@ -30,6 +33,16 @@ func New(storer ipld.Storer) *UnverifiedBlockStore {
 // comes in as part of a traversal.
 func (ubs *UnverifiedBlockStore) AddUnverifiedBlock(lnk ipld.Link, data []byte) {
 	ubs.inMemoryBlocks[lnk] = data
+	log.Debugw("added in-memory block", "data-size", ubs.dataSize())
+}
+
+func (ubs *UnverifiedBlockStore) dataSize() uint64 {
+	size := uint64(0)
+	for _, data := range ubs.inMemoryBlocks {
+		size = size +  uint64(len(data))
+	}
+
+	return size
 }
 
 // PruneBlocks removes blocks from the unverified store without committing them,
@@ -40,6 +53,7 @@ func (ubs *UnverifiedBlockStore) PruneBlocks(shouldPrune func(ipld.Link) bool) {
 			delete(ubs.inMemoryBlocks, link)
 		}
 	}
+	log.Debugw("finished pruning in-memory blocks", "data-size", ubs.dataSize())
 }
 
 // PruneBlock deletes an individual block from the store

From 1f4b670d46fdb0de94df44d5c814583f9d88c168 Mon Sep 17 00:00:00 2001
From: Aarsh Shah <aarshkshah1992@gmail.com>
Date: Wed, 18 Aug 2021 09:00:58 +0530
Subject: [PATCH 03/13] fix log name

---
 .../asyncloader/unverifiedblockstore/unverifiedblockstore.go    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
index dbcf0377..c78e3702 100644
--- a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
+++ b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
@@ -7,7 +7,7 @@ import (
 	ipld "github.com/ipld/go-ipld-prime"
 )
 
-var log = logging.Logger("gs-unverifiedBlockStore")
+var log = logging.Logger("gs-unverifiedbs")
 
 type settableWriter interface {
 	SetBytes([]byte) error

From 5fc2ff261d2e60bd8da738bab76420e57891e296 Mon Sep 17 00:00:00 2001
From: Aarsh Shah <aarshkshah1992@gmail.com>
Date: Wed, 18 Aug 2021 14:36:28 +0530
Subject: [PATCH 04/13] record in-memory bs size

---
 .../unverifiedblockstore.go                    | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
index c78e3702..c3fd7d41 100644
--- a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
+++ b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
@@ -18,6 +18,7 @@ type settableWriter interface {
 type UnverifiedBlockStore struct {
 	inMemoryBlocks map[ipld.Link][]byte
 	storer         ipld.Storer
+	dataSize uint64
 }
 
 // New initializes a new unverified store with the given storer function for writing
@@ -33,27 +34,20 @@ func New(storer ipld.Storer) *UnverifiedBlockStore {
 // comes in as part of a traversal.
 func (ubs *UnverifiedBlockStore) AddUnverifiedBlock(lnk ipld.Link, data []byte) {
 	ubs.inMemoryBlocks[lnk] = data
-	log.Debugw("added in-memory block", "data-size", ubs.dataSize())
-}
-
-func (ubs *UnverifiedBlockStore) dataSize() uint64 {
-	size := uint64(0)
-	for _, data := range ubs.inMemoryBlocks {
-		size = size +  uint64(len(data))
-	}
-
-	return size
+	ubs.dataSize = ubs.dataSize + uint64(len(data))
+	log.Debugw("added in-memory block", "data-size", ubs.dataSize)
 }
 
 // PruneBlocks removes blocks from the unverified store without committing them,
 // if the passed in function returns true for the given link
 func (ubs *UnverifiedBlockStore) PruneBlocks(shouldPrune func(ipld.Link) bool) {
-	for link := range ubs.inMemoryBlocks {
+	for link,data := range ubs.inMemoryBlocks {
 		if shouldPrune(link) {
 			delete(ubs.inMemoryBlocks, link)
+			ubs.dataSize = ubs.dataSize - uint64(len(data))
 		}
 	}
-	log.Debugw("finished pruning in-memory blocks", "data-size", ubs.dataSize())
+	log.Debugw("finished pruning in-memory blocks", "data-size", ubs.dataSize)
 }
 
 // PruneBlock deletes an individual block from the store

From 9c686cb685576441178b97a8f6b1841f59b90d16 Mon Sep 17 00:00:00 2001
From: Aarsh Shah <aarshkshah1992@gmail.com>
Date: Wed, 18 Aug 2021 14:40:28 +0530
Subject: [PATCH 05/13] fix calc

---
 .../asyncloader/unverifiedblockstore/unverifiedblockstore.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
index c3fd7d41..1a04e0e9 100644
--- a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
+++ b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
@@ -3,7 +3,6 @@ package unverifiedblockstore
 import (
 	"fmt"
 	logging "github.com/ipfs/go-log/v2"
-
 	ipld "github.com/ipld/go-ipld-prime"
 )
 
@@ -53,6 +52,7 @@ func (ubs *UnverifiedBlockStore) PruneBlocks(shouldPrune func(ipld.Link) bool) {
 // PruneBlock deletes an individual block from the store
 func (ubs *UnverifiedBlockStore) PruneBlock(link ipld.Link) {
 	delete(ubs.inMemoryBlocks, link)
+	ubs.dataSize = ubs.dataSize - uint64(len(ubs.inMemoryBlocks[link]))
 }
 
 // VerifyBlock verifies the data for the given link as being part of a traversal,
@@ -63,6 +63,9 @@ func (ubs *UnverifiedBlockStore) VerifyBlock(lnk ipld.Link) ([]byte, error) {
 		return nil, fmt.Errorf("Block not found")
 	}
 	delete(ubs.inMemoryBlocks, lnk)
+	ubs.dataSize = ubs.dataSize - uint64(len(data))
+
+
 	buffer, committer, err := ubs.storer(ipld.LinkContext{})
 	if err != nil {
 		return nil, err

From cda4f071c2f5641bd215cd6e1d6af6653065f538 Mon Sep 17 00:00:00 2001
From: Aarsh Shah <aarshkshah1992@gmail.com>
Date: Wed, 18 Aug 2021 16:23:05 +0530
Subject: [PATCH 06/13] Apply suggestions from code review

Co-authored-by: raulk <raul@protocol.ai>
---
 .../asyncloader/unverifiedblockstore/unverifiedblockstore.go | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
index 1a04e0e9..7e94fc5f 100644
--- a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
+++ b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
@@ -34,7 +34,7 @@ func New(storer ipld.Storer) *UnverifiedBlockStore {
 func (ubs *UnverifiedBlockStore) AddUnverifiedBlock(lnk ipld.Link, data []byte) {
 	ubs.inMemoryBlocks[lnk] = data
 	ubs.dataSize = ubs.dataSize + uint64(len(data))
-	log.Debugw("added in-memory block", "data-size", ubs.dataSize)
+	log.Debugw("added in-memory block", "total_queued_bytes", ubs.dataSize)
 }
 
 // PruneBlocks removes blocks from the unverified store without committing them,
@@ -46,7 +46,7 @@ func (ubs *UnverifiedBlockStore) PruneBlocks(shouldPrune func(ipld.Link) bool) {
 			ubs.dataSize = ubs.dataSize - uint64(len(data))
 		}
 	}
-	log.Debugw("finished pruning in-memory blocks", "data-size", ubs.dataSize)
+	log.Debugw("finished pruning in-memory blocks", "total_queued_bytes", ubs.dataSize)
 }
 
 // PruneBlock deletes an individual block from the store
@@ -65,7 +65,6 @@ func (ubs *UnverifiedBlockStore) VerifyBlock(lnk ipld.Link) ([]byte, error) {
 	delete(ubs.inMemoryBlocks, lnk)
 	ubs.dataSize = ubs.dataSize - uint64(len(data))
 
-
 	buffer, committer, err := ubs.storer(ipld.LinkContext{})
 	if err != nil {
 		return nil, err

From 9171ce6bccd62bf4303c12edd07e278713e6da06 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Wed, 18 Aug 2021 22:48:43 -0700
Subject: [PATCH 07/13] feat(asyncloader): memory pressure incoming responses

Block reading incoming responses to avoid memory pressure buildup
---
 benchmarks/benchmark_test.go                  | 24 ++++++-
 impl/graphsync.go                             | 50 ++++++++++-----
 requestmanager/asyncloader/asyncloader.go     | 36 ++++++++---
 .../asyncloader/asyncloader_test.go           | 63 ++++++++++++-------
 .../loadattemptqueue/loadattemptqueue.go      | 12 ++--
 .../loadattemptqueue/loadattemptqueue_test.go | 28 ++++++---
 .../unverifiedblockstore.go                   |  7 ++-
 requestmanager/executor/executor.go           |  4 +-
 requestmanager/executor/executor_test.go      |  2 +-
 requestmanager/requestmanager.go              | 17 ++---
 requestmanager/requestmanager_test.go         | 42 ++++++-------
 requestmanager/testloader/asyncloader.go      | 26 ++++----
 12 files changed, 204 insertions(+), 107 deletions(-)

diff --git a/benchmarks/benchmark_test.go b/benchmarks/benchmark_test.go
index 95875c24..9e64eded 100644
--- a/benchmarks/benchmark_test.go
+++ b/benchmarks/benchmark_test.go
@@ -66,6 +66,9 @@ func BenchmarkRoundtripSuccess(b *testing.B) {
 	b.Run("test-p2p-stress-1-1GB-memory-pressure", func(b *testing.B) {
 		p2pStrestTest(ctx, b, 1, allFilesUniformSize(1*(1<<30), 1<<20, 1024, true), tdm, []graphsync.Option{graphsync.MaxMemoryResponder(1 << 27)}, true)
 	})
+	b.Run("test-p2p-stress-1-1GB-memory-pressure-missing-blocks", func(b *testing.B) {
+		p2pStrestTest(ctx, b, 1, allFilesMissingTopLevelBlock(1*(1<<30), 1<<20, 1024, true), tdm, []graphsync.Option{graphsync.MaxMemoryResponder(1 << 27)}, true)
+	})
 	b.Run("test-p2p-stress-1-1GB-memory-pressure-no-raw-nodes", func(b *testing.B) {
 		p2pStrestTest(ctx, b, 1, allFilesUniformSize(1*(1<<30), 1<<20, 1024, false), tdm, []graphsync.Option{graphsync.MaxMemoryResponder(1 << 27)}, true)
 	})
@@ -173,10 +176,10 @@ func p2pStrestTest(ctx context.Context, b *testing.B, numfiles int, df distFunc,
 			wg.Add(1)
 			go func(j int) {
 				defer wg.Done()
-				for _ = range responseChan {
+				for range responseChan {
 				}
 				for err := range errChan {
-					b.Fatalf("received error on request: %s", err.Error())
+					b.Logf("Error during network traversal: %s", err.Error())
 				}
 			}(j)
 		}
@@ -302,6 +305,23 @@ func allFilesUniformSize(size uint64, unixfsChunkSize uint64, unixfsLinksPerLeve
 	}
 }
 
+func allFilesMissingTopLevelBlock(size uint64, unixfsChunkSize uint64, unixfsLinksPerLevel int, useRawNodes bool) distFunc {
+	return func(ctx context.Context, b *testing.B, provs []testinstance.Instance) []cid.Cid {
+		cids := make([]cid.Cid, 0, len(provs))
+		for _, prov := range provs {
+			c := loadRandomUnixFxFile(ctx, b, prov.BlockStore, size, unixfsChunkSize, unixfsLinksPerLevel, useRawNodes)
+			ds := merkledag.NewDAGService(blockservice.New(prov.BlockStore, offline.Exchange(prov.BlockStore)))
+			lnks, err := ds.GetLinks(ctx, c)
+			require.NoError(b, err)
+			randLink := lnks[rand.Intn(len(lnks))]
+			err = ds.Remove(ctx, randLink.Cid)
+			require.NoError(b, err)
+			cids = append(cids, c)
+		}
+		return cids
+	}
+}
+
 type tempDirMaker struct {
 	tdm        string
 	tempDirSeq int32
diff --git a/impl/graphsync.go b/impl/graphsync.go
index ce16c734..5f912061 100644
--- a/impl/graphsync.go
+++ b/impl/graphsync.go
@@ -63,10 +63,12 @@ type GraphSync struct {
 }
 
 type graphsyncConfigOptions struct {
-	totalMaxMemory           uint64
-	maxMemoryPerPeer         uint64
-	maxInProgressRequests    uint64
-	registerDefaultValidator bool
+	totalMaxMemoryResponder   uint64
+	maxMemoryPerPeerResponder uint64
+	totalMaxMemoryRequestor   uint64
+	maxMemoryPerPeerRequestor uint64
+	maxInProgressRequests     uint64
+	registerDefaultValidator  bool
 }
 
 // Option defines the functional option type that can be used to configure
@@ -85,7 +87,7 @@ func RejectAllRequestsByDefault() Option {
 // may consume queueing up messages for a response in total
 func MaxMemoryResponder(totalMaxMemory uint64) Option {
 	return func(gs *graphsyncConfigOptions) {
-		gs.totalMaxMemory = totalMaxMemory
+		gs.totalMaxMemoryResponder = totalMaxMemory
 	}
 }
 
@@ -93,7 +95,23 @@ func MaxMemoryResponder(totalMaxMemory uint64) Option {
 // may consume queueing up messages for a response
 func MaxMemoryPerPeerResponder(maxMemoryPerPeer uint64) Option {
 	return func(gs *graphsyncConfigOptions) {
-		gs.maxMemoryPerPeer = maxMemoryPerPeer
+		gs.maxMemoryPerPeerResponder = maxMemoryPerPeer
+	}
+}
+
+// MaxMemoryRequestor defines the maximum amount of memory the responder
+// may consume queueing up messages for a response in total
+func MaxMemoryRequestor(totalMaxMemory uint64) Option {
+	return func(gs *graphsyncConfigOptions) {
+		gs.totalMaxMemoryRequestor = totalMaxMemory
+	}
+}
+
+// MaxMemoryPerPeerRequestor defines the maximum amount of memory a peer
+// may consume queueing up messages for a response
+func MaxMemoryPerPeerRequestor(maxMemoryPerPeer uint64) Option {
+	return func(gs *graphsyncConfigOptions) {
+		gs.maxMemoryPerPeerRequestor = maxMemoryPerPeer
 	}
 }
 
@@ -112,10 +130,12 @@ func New(parent context.Context, network gsnet.GraphSyncNetwork,
 	ctx, cancel := context.WithCancel(parent)
 
 	gsConfig := &graphsyncConfigOptions{
-		totalMaxMemory:           defaultTotalMaxMemory,
-		maxMemoryPerPeer:         defaultMaxMemoryPerPeer,
-		maxInProgressRequests:    defaultMaxInProgressRequests,
-		registerDefaultValidator: true,
+		totalMaxMemoryResponder:   defaultTotalMaxMemory,
+		maxMemoryPerPeerResponder: defaultMaxMemoryPerPeer,
+		totalMaxMemoryRequestor:   defaultTotalMaxMemory,
+		maxMemoryPerPeerRequestor: defaultMaxMemoryPerPeer,
+		maxInProgressRequests:     defaultMaxInProgressRequests,
+		registerDefaultValidator:  true,
 	}
 	for _, option := range options {
 		option(gsConfig)
@@ -136,12 +156,14 @@ func New(parent context.Context, network gsnet.GraphSyncNetwork,
 	if gsConfig.registerDefaultValidator {
 		incomingRequestHooks.Register(selectorvalidator.SelectorValidator(maxRecursionDepth))
 	}
-	allocator := allocator.NewAllocator(gsConfig.totalMaxMemory, gsConfig.maxMemoryPerPeer)
+	responseAllocator := allocator.NewAllocator(gsConfig.totalMaxMemoryResponder, gsConfig.maxMemoryPerPeerResponder)
 	createMessageQueue := func(ctx context.Context, p peer.ID) peermanager.PeerQueue {
-		return messagequeue.New(ctx, p, network, allocator)
+		return messagequeue.New(ctx, p, network, responseAllocator)
 	}
 	peerManager := peermanager.NewMessageManager(ctx, createMessageQueue)
-	asyncLoader := asyncloader.New(ctx, loader, storer)
+	requestAllocator := allocator.NewAllocator(gsConfig.totalMaxMemoryRequestor, gsConfig.maxMemoryPerPeerRequestor)
+
+	asyncLoader := asyncloader.New(ctx, loader, storer, requestAllocator)
 	requestManager := requestmanager.New(ctx, asyncLoader, outgoingRequestHooks, incomingResponseHooks, incomingBlockHooks, networkErrorListeners)
 	responseAssembler := responseassembler.New(ctx, peerManager)
 	peerTaskQueue := peertaskqueue.New()
@@ -171,7 +193,7 @@ func New(parent context.Context, network gsnet.GraphSyncNetwork,
 		persistenceOptions:          persistenceOptions,
 		ctx:                         ctx,
 		cancel:                      cancel,
-		allocator:                   allocator,
+		allocator:                   responseAllocator,
 	}
 
 	asyncLoader.Startup()
diff --git a/requestmanager/asyncloader/asyncloader.go b/requestmanager/asyncloader/asyncloader.go
index c0111b5d..afe79999 100644
--- a/requestmanager/asyncloader/asyncloader.go
+++ b/requestmanager/asyncloader/asyncloader.go
@@ -7,6 +7,7 @@ import (
 
 	blocks "github.com/ipfs/go-block-format"
 	"github.com/ipld/go-ipld-prime"
+	peer "github.com/libp2p/go-libp2p-peer"
 
 	"github.com/ipfs/go-graphsync"
 	"github.com/ipfs/go-graphsync/metadata"
@@ -25,6 +26,12 @@ type alternateQueue struct {
 	loadAttemptQueue *loadattemptqueue.LoadAttemptQueue
 }
 
+// Allocator indicates a mechanism for tracking memory used by a given peer
+type Allocator interface {
+	AllocateBlockMemory(p peer.ID, amount uint64) <-chan error
+	ReleaseBlockMemory(p peer.ID, amount uint64) error
+}
+
 // AsyncLoader manages loading links asynchronously in as new responses
 // come in from the network
 type AsyncLoader struct {
@@ -40,12 +47,13 @@ type AsyncLoader struct {
 	alternateQueues  map[string]alternateQueue
 	responseCache    *responsecache.ResponseCache
 	loadAttemptQueue *loadattemptqueue.LoadAttemptQueue
+	allocator        Allocator
 }
 
 // New initializes a new link loading manager for asynchronous loads from the given context
 // and local store loading and storing function
-func New(ctx context.Context, loader ipld.Loader, storer ipld.Storer) *AsyncLoader {
-	responseCache, loadAttemptQueue := setupAttemptQueue(loader, storer)
+func New(ctx context.Context, loader ipld.Loader, storer ipld.Storer, allocator Allocator) *AsyncLoader {
+	responseCache, loadAttemptQueue := setupAttemptQueue(loader, storer, allocator)
 	ctx, cancel := context.WithCancel(ctx)
 	return &AsyncLoader{
 		ctx:              ctx,
@@ -59,6 +67,7 @@ func New(ctx context.Context, loader ipld.Loader, storer ipld.Storer) *AsyncLoad
 		alternateQueues:  make(map[string]alternateQueue),
 		responseCache:    responseCache,
 		loadAttemptQueue: loadAttemptQueue,
+		allocator:        allocator,
 	}
 }
 
@@ -103,8 +112,16 @@ func (al *AsyncLoader) StartRequest(requestID graphsync.RequestID, persistenceOp
 
 // ProcessResponse injests new responses and completes asynchronous loads as
 // neccesary
-func (al *AsyncLoader) ProcessResponse(responses map[graphsync.RequestID]metadata.Metadata,
+func (al *AsyncLoader) ProcessResponse(p peer.ID, responses map[graphsync.RequestID]metadata.Metadata,
 	blks []blocks.Block) {
+	totalMemoryAllocated := uint64(0)
+	for _, blk := range blks {
+		totalMemoryAllocated += uint64(len(blk.RawData()))
+	}
+	select {
+	case <-al.allocator.AllocateBlockMemory(p, totalMemoryAllocated):
+	case <-al.ctx.Done():
+	}
 	select {
 	case <-al.ctx.Done():
 	case al.incomingMessages <- &newResponsesAvailableMessage{responses, blks}:
@@ -113,10 +130,10 @@ func (al *AsyncLoader) ProcessResponse(responses map[graphsync.RequestID]metadat
 
 // AsyncLoad asynchronously loads the given link for the given request ID. It returns a channel for data and a channel
 // for errors -- only one message will be sent over either.
-func (al *AsyncLoader) AsyncLoad(requestID graphsync.RequestID, link ipld.Link) <-chan types.AsyncLoadResult {
+func (al *AsyncLoader) AsyncLoad(p peer.ID, requestID graphsync.RequestID, link ipld.Link) <-chan types.AsyncLoadResult {
 	resultChan := make(chan types.AsyncLoadResult, 1)
 	response := make(chan error, 1)
-	lr := loadattemptqueue.NewLoadRequest(requestID, link, resultChan)
+	lr := loadattemptqueue.NewLoadRequest(p, requestID, link, resultChan)
 	_ = al.sendSyncMessage(&loadRequestMessage{response, requestID, lr}, response)
 	return resultChan
 }
@@ -258,7 +275,7 @@ func (rpom *registerPersistenceOptionMessage) register(al *AsyncLoader) error {
 	if existing {
 		return errors.New("already registerd a persistence option with this name")
 	}
-	responseCache, loadAttemptQueue := setupAttemptQueue(rpom.loader, rpom.storer)
+	responseCache, loadAttemptQueue := setupAttemptQueue(rpom.loader, rpom.storer, al.allocator)
 	al.alternateQueues[rpom.name] = alternateQueue{responseCache, loadAttemptQueue}
 	return nil
 }
@@ -347,13 +364,16 @@ func (crm *cleanupRequestMessage) handle(al *AsyncLoader) {
 	al.responseCache.FinishRequest(crm.requestID)
 }
 
-func setupAttemptQueue(loader ipld.Loader, storer ipld.Storer) (*responsecache.ResponseCache, *loadattemptqueue.LoadAttemptQueue) {
+func setupAttemptQueue(loader ipld.Loader, storer ipld.Storer, allocator Allocator) (*responsecache.ResponseCache, *loadattemptqueue.LoadAttemptQueue) {
 
 	unverifiedBlockStore := unverifiedblockstore.New(storer)
 	responseCache := responsecache.New(unverifiedBlockStore)
-	loadAttemptQueue := loadattemptqueue.New(func(requestID graphsync.RequestID, link ipld.Link) types.AsyncLoadResult {
+	loadAttemptQueue := loadattemptqueue.New(func(p peer.ID, requestID graphsync.RequestID, link ipld.Link) types.AsyncLoadResult {
 		// load from response cache
 		data, err := responseCache.AttemptLoad(requestID, link)
+		if data != nil {
+			allocator.ReleaseBlockMemory(p, uint64(len(data)))
+		}
 		if data == nil && err == nil {
 			// fall back to local store
 			stream, loadErr := loader(link, ipld.LinkContext{})
diff --git a/requestmanager/asyncloader/asyncloader_test.go b/requestmanager/asyncloader/asyncloader_test.go
index 8d3a41bc..13c482fe 100644
--- a/requestmanager/asyncloader/asyncloader_test.go
+++ b/requestmanager/asyncloader/asyncloader_test.go
@@ -13,6 +13,7 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"github.com/ipfs/go-graphsync"
+	"github.com/ipfs/go-graphsync/allocator"
 	"github.com/ipfs/go-graphsync/metadata"
 	"github.com/ipfs/go-graphsync/requestmanager/types"
 	"github.com/ipfs/go-graphsync/testutil"
@@ -24,7 +25,8 @@ func TestAsyncLoadInitialLoadSucceedsLocallyPresent(t *testing.T) {
 	link := st.Store(t, block)
 	withLoader(st, func(ctx context.Context, asyncLoader *AsyncLoader) {
 		requestID := graphsync.RequestID(rand.Int31())
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 		assertSuccessResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 1)
 	})
@@ -46,8 +48,9 @@ func TestAsyncLoadInitialLoadSucceedsResponsePresent(t *testing.T) {
 				},
 			},
 		}
-		asyncLoader.ProcessResponse(responses, blocks)
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		p := testutil.GeneratePeers(1)[0]
+		asyncLoader.ProcessResponse(p, responses, blocks)
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 
 		assertSuccessResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 0)
@@ -69,9 +72,10 @@ func TestAsyncLoadInitialLoadFails(t *testing.T) {
 				},
 			},
 		}
-		asyncLoader.ProcessResponse(responses, nil)
+		p := testutil.GeneratePeers(1)[0]
+		asyncLoader.ProcessResponse(p, responses, nil)
 
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 		assertFailResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 0)
 	})
@@ -82,7 +86,8 @@ func TestAsyncLoadInitialLoadIndeterminateWhenRequestNotInProgress(t *testing.T)
 	withLoader(st, func(ctx context.Context, asyncLoader *AsyncLoader) {
 		link := testutil.NewTestLink()
 		requestID := graphsync.RequestID(rand.Int31())
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 		assertFailResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 1)
 	})
@@ -99,7 +104,8 @@ func TestAsyncLoadInitialLoadIndeterminateThenSucceeds(t *testing.T) {
 		requestID := graphsync.RequestID(rand.Int31())
 		err := asyncLoader.StartRequest(requestID, "")
 		require.NoError(t, err)
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 
 		st.AssertAttemptLoadWithoutResult(ctx, t, resultChan)
 
@@ -111,7 +117,7 @@ func TestAsyncLoadInitialLoadIndeterminateThenSucceeds(t *testing.T) {
 				},
 			},
 		}
-		asyncLoader.ProcessResponse(responses, blocks)
+		asyncLoader.ProcessResponse(p, responses, blocks)
 		assertSuccessResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 1)
 		st.AssertBlockStored(t, block)
@@ -126,7 +132,8 @@ func TestAsyncLoadInitialLoadIndeterminateThenFails(t *testing.T) {
 		requestID := graphsync.RequestID(rand.Int31())
 		err := asyncLoader.StartRequest(requestID, "")
 		require.NoError(t, err)
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 
 		st.AssertAttemptLoadWithoutResult(ctx, t, resultChan)
 
@@ -138,7 +145,7 @@ func TestAsyncLoadInitialLoadIndeterminateThenFails(t *testing.T) {
 				},
 			},
 		}
-		asyncLoader.ProcessResponse(responses, nil)
+		asyncLoader.ProcessResponse(p, responses, nil)
 		assertFailResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 1)
 	})
@@ -151,7 +158,8 @@ func TestAsyncLoadInitialLoadIndeterminateThenRequestFinishes(t *testing.T) {
 		requestID := graphsync.RequestID(rand.Int31())
 		err := asyncLoader.StartRequest(requestID, "")
 		require.NoError(t, err)
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 		st.AssertAttemptLoadWithoutResult(ctx, t, resultChan)
 		asyncLoader.CompleteResponsesFor(requestID)
 		assertFailResponse(ctx, t, resultChan)
@@ -174,13 +182,14 @@ func TestAsyncLoadTwiceLoadsLocallySecondTime(t *testing.T) {
 				},
 			},
 		}
-		asyncLoader.ProcessResponse(responses, blocks)
-		resultChan := asyncLoader.AsyncLoad(requestID, link)
+		p := testutil.GeneratePeers(1)[0]
+		asyncLoader.ProcessResponse(p, responses, blocks)
+		resultChan := asyncLoader.AsyncLoad(p, requestID, link)
 
 		assertSuccessResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 0)
 
-		resultChan = asyncLoader.AsyncLoad(requestID, link)
+		resultChan = asyncLoader.AsyncLoad(p, requestID, link)
 		assertSuccessResponse(ctx, t, resultChan)
 		st.AssertLocalLoads(t, 1)
 
@@ -204,7 +213,8 @@ func TestRegisterUnregister(t *testing.T) {
 		requestID2 := graphsync.RequestID(rand.Int31())
 		err = asyncLoader.StartRequest(requestID2, "other")
 		require.NoError(t, err)
-		resultChan1 := asyncLoader.AsyncLoad(requestID2, link1)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan1 := asyncLoader.AsyncLoad(p, requestID2, link1)
 		assertSuccessResponse(ctx, t, resultChan1)
 		err = asyncLoader.UnregisterPersistenceOption("other")
 		require.EqualError(t, err, "cannot unregister while requests are in progress")
@@ -227,11 +237,13 @@ func TestRequestSplittingLoadLocallyFromBlockstore(t *testing.T) {
 		err := asyncLoader.RegisterPersistenceOption("other", otherSt.loader, otherSt.storer)
 		require.NoError(t, err)
 		requestID1 := graphsync.RequestID(rand.Int31())
-		resultChan1 := asyncLoader.AsyncLoad(requestID1, link)
+		p := testutil.GeneratePeers(1)[0]
+
+		resultChan1 := asyncLoader.AsyncLoad(p, requestID1, link)
 		requestID2 := graphsync.RequestID(rand.Int31())
 		err = asyncLoader.StartRequest(requestID2, "other")
 		require.NoError(t, err)
-		resultChan2 := asyncLoader.AsyncLoad(requestID2, link)
+		resultChan2 := asyncLoader.AsyncLoad(p, requestID2, link)
 
 		assertFailResponse(ctx, t, resultChan1)
 		assertSuccessResponse(ctx, t, resultChan2)
@@ -254,8 +266,9 @@ func TestRequestSplittingSameBlockTwoStores(t *testing.T) {
 		require.NoError(t, err)
 		err = asyncLoader.StartRequest(requestID2, "other")
 		require.NoError(t, err)
-		resultChan1 := asyncLoader.AsyncLoad(requestID1, link)
-		resultChan2 := asyncLoader.AsyncLoad(requestID2, link)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan1 := asyncLoader.AsyncLoad(p, requestID1, link)
+		resultChan2 := asyncLoader.AsyncLoad(p, requestID2, link)
 		responses := map[graphsync.RequestID]metadata.Metadata{
 			requestID1: metadata.Metadata{
 				metadata.Item{
@@ -270,7 +283,7 @@ func TestRequestSplittingSameBlockTwoStores(t *testing.T) {
 				},
 			},
 		}
-		asyncLoader.ProcessResponse(responses, blocks)
+		asyncLoader.ProcessResponse(p, responses, blocks)
 
 		assertSuccessResponse(ctx, t, resultChan1)
 		assertSuccessResponse(ctx, t, resultChan2)
@@ -294,8 +307,9 @@ func TestRequestSplittingSameBlockOnlyOneResponse(t *testing.T) {
 		require.NoError(t, err)
 		err = asyncLoader.StartRequest(requestID2, "other")
 		require.NoError(t, err)
-		resultChan1 := asyncLoader.AsyncLoad(requestID1, link)
-		resultChan2 := asyncLoader.AsyncLoad(requestID2, link)
+		p := testutil.GeneratePeers(1)[0]
+		resultChan1 := asyncLoader.AsyncLoad(p, requestID1, link)
+		resultChan2 := asyncLoader.AsyncLoad(p, requestID2, link)
 		responses := map[graphsync.RequestID]metadata.Metadata{
 			requestID2: metadata.Metadata{
 				metadata.Item{
@@ -304,7 +318,7 @@ func TestRequestSplittingSameBlockOnlyOneResponse(t *testing.T) {
 				},
 			},
 		}
-		asyncLoader.ProcessResponse(responses, blocks)
+		asyncLoader.ProcessResponse(p, responses, blocks)
 		asyncLoader.CompleteResponsesFor(requestID1)
 
 		assertFailResponse(ctx, t, resultChan1)
@@ -370,7 +384,8 @@ func withLoader(st *store, exec func(ctx context.Context, asyncLoader *AsyncLoad
 	ctx := context.Background()
 	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
-	asyncLoader := New(ctx, st.loader, st.storer)
+	allocator := allocator.NewAllocator(256*(1<<20), 16*(1<<20))
+	asyncLoader := New(ctx, st.loader, st.storer, allocator)
 	asyncLoader.Startup()
 	exec(ctx, asyncLoader)
 }
diff --git a/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue.go b/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue.go
index 092cd0a3..c6c318b5 100644
--- a/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue.go
+++ b/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 
 	"github.com/ipld/go-ipld-prime"
+	"github.com/libp2p/go-libp2p-core/peer"
 
 	"github.com/ipfs/go-graphsync"
 	"github.com/ipfs/go-graphsync/requestmanager/types"
@@ -12,6 +13,7 @@ import (
 // LoadRequest is a request to load the given link for the given request id,
 // with results returned to the given channel
 type LoadRequest struct {
+	p          peer.ID
 	requestID  graphsync.RequestID
 	link       ipld.Link
 	resultChan chan types.AsyncLoadResult
@@ -19,15 +21,17 @@ type LoadRequest struct {
 
 // NewLoadRequest returns a new LoadRequest for the given request id, link,
 // and results channel
-func NewLoadRequest(requestID graphsync.RequestID,
+func NewLoadRequest(
+	p peer.ID,
+	requestID graphsync.RequestID,
 	link ipld.Link,
 	resultChan chan types.AsyncLoadResult) LoadRequest {
-	return LoadRequest{requestID, link, resultChan}
+	return LoadRequest{p, requestID, link, resultChan}
 }
 
 // LoadAttempter attempts to load a link to an array of bytes
 // and returns an async load result
-type LoadAttempter func(graphsync.RequestID, ipld.Link) types.AsyncLoadResult
+type LoadAttempter func(peer.ID, graphsync.RequestID, ipld.Link) types.AsyncLoadResult
 
 // LoadAttemptQueue attempts to load using the load attempter, and then can
 // place requests on a retry queue
@@ -46,7 +50,7 @@ func New(loadAttempter LoadAttempter) *LoadAttemptQueue {
 // AttemptLoad attempts to loads the given load request, and if retry is true
 // it saves the loadrequest for retrying later
 func (laq *LoadAttemptQueue) AttemptLoad(lr LoadRequest, retry bool) {
-	response := laq.loadAttempter(lr.requestID, lr.link)
+	response := laq.loadAttempter(lr.p, lr.requestID, lr.link)
 	if response.Err != nil || response.Data != nil {
 		lr.resultChan <- response
 		close(lr.resultChan)
diff --git a/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue_test.go b/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue_test.go
index 5f26a6fe..ccf076ea 100644
--- a/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue_test.go
+++ b/requestmanager/asyncloader/loadattemptqueue/loadattemptqueue_test.go
@@ -8,6 +8,7 @@ import (
 	"time"
 
 	ipld "github.com/ipld/go-ipld-prime"
+	"github.com/libp2p/go-libp2p-core/peer"
 	"github.com/stretchr/testify/require"
 
 	"github.com/ipfs/go-graphsync"
@@ -20,7 +21,7 @@ func TestAsyncLoadInitialLoadSucceeds(t *testing.T) {
 	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
 	callCount := 0
-	loadAttempter := func(graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
+	loadAttempter := func(peer.ID, graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
 		callCount++
 		return types.AsyncLoadResult{
 			Data: testutil.RandomBytes(100),
@@ -30,9 +31,10 @@ func TestAsyncLoadInitialLoadSucceeds(t *testing.T) {
 
 	link := testutil.NewTestLink()
 	requestID := graphsync.RequestID(rand.Int31())
+	p := testutil.GeneratePeers(1)[0]
 
 	resultChan := make(chan types.AsyncLoadResult, 1)
-	lr := NewLoadRequest(requestID, link, resultChan)
+	lr := NewLoadRequest(p, requestID, link, resultChan)
 	loadAttemptQueue.AttemptLoad(lr, false)
 
 	var result types.AsyncLoadResult
@@ -48,7 +50,7 @@ func TestAsyncLoadInitialLoadFails(t *testing.T) {
 	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
 	callCount := 0
-	loadAttempter := func(graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
+	loadAttempter := func(peer.ID, graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
 		callCount++
 		return types.AsyncLoadResult{
 			Err: fmt.Errorf("something went wrong"),
@@ -59,7 +61,9 @@ func TestAsyncLoadInitialLoadFails(t *testing.T) {
 	link := testutil.NewTestLink()
 	requestID := graphsync.RequestID(rand.Int31())
 	resultChan := make(chan types.AsyncLoadResult, 1)
-	lr := NewLoadRequest(requestID, link, resultChan)
+	p := testutil.GeneratePeers(1)[0]
+
+	lr := NewLoadRequest(p, requestID, link, resultChan)
 	loadAttemptQueue.AttemptLoad(lr, false)
 
 	var result types.AsyncLoadResult
@@ -74,7 +78,7 @@ func TestAsyncLoadInitialLoadIndeterminateRetryFalse(t *testing.T) {
 	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
 	callCount := 0
-	loadAttempter := func(graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
+	loadAttempter := func(peer.ID, graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
 		var result []byte
 		if callCount > 0 {
 			result = testutil.RandomBytes(100)
@@ -89,8 +93,10 @@ func TestAsyncLoadInitialLoadIndeterminateRetryFalse(t *testing.T) {
 
 	link := testutil.NewTestLink()
 	requestID := graphsync.RequestID(rand.Int31())
+	p := testutil.GeneratePeers(1)[0]
+
 	resultChan := make(chan types.AsyncLoadResult, 1)
-	lr := NewLoadRequest(requestID, link, resultChan)
+	lr := NewLoadRequest(p, requestID, link, resultChan)
 	loadAttemptQueue.AttemptLoad(lr, false)
 
 	var result types.AsyncLoadResult
@@ -106,7 +112,7 @@ func TestAsyncLoadInitialLoadIndeterminateRetryTrueThenRetriedSuccess(t *testing
 	defer cancel()
 	callCount := 0
 	called := make(chan struct{}, 2)
-	loadAttempter := func(graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
+	loadAttempter := func(peer.ID, graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
 		var result []byte
 		called <- struct{}{}
 		if callCount > 0 {
@@ -122,7 +128,8 @@ func TestAsyncLoadInitialLoadIndeterminateRetryTrueThenRetriedSuccess(t *testing
 	link := testutil.NewTestLink()
 	requestID := graphsync.RequestID(rand.Int31())
 	resultChan := make(chan types.AsyncLoadResult, 1)
-	lr := NewLoadRequest(requestID, link, resultChan)
+	p := testutil.GeneratePeers(1)[0]
+	lr := NewLoadRequest(p, requestID, link, resultChan)
 	loadAttemptQueue.AttemptLoad(lr, true)
 
 	testutil.AssertDoesReceiveFirst(t, called, "should attempt load with no result", resultChan, ctx.Done())
@@ -141,7 +148,7 @@ func TestAsyncLoadInitialLoadIndeterminateThenRequestFinishes(t *testing.T) {
 	defer cancel()
 	callCount := 0
 	called := make(chan struct{}, 2)
-	loadAttempter := func(graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
+	loadAttempter := func(peer.ID, graphsync.RequestID, ipld.Link) types.AsyncLoadResult {
 		var result []byte
 		called <- struct{}{}
 		if callCount > 0 {
@@ -157,7 +164,8 @@ func TestAsyncLoadInitialLoadIndeterminateThenRequestFinishes(t *testing.T) {
 	link := testutil.NewTestLink()
 	requestID := graphsync.RequestID(rand.Int31())
 	resultChan := make(chan types.AsyncLoadResult, 1)
-	lr := NewLoadRequest(requestID, link, resultChan)
+	p := testutil.GeneratePeers(1)[0]
+	lr := NewLoadRequest(p, requestID, link, resultChan)
 	loadAttemptQueue.AttemptLoad(lr, true)
 
 	testutil.AssertDoesReceiveFirst(t, called, "should attempt load with no result", resultChan, ctx.Done())
diff --git a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
index 7e94fc5f..74fade97 100644
--- a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
+++ b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
@@ -2,6 +2,7 @@ package unverifiedblockstore
 
 import (
 	"fmt"
+
 	logging "github.com/ipfs/go-log/v2"
 	ipld "github.com/ipld/go-ipld-prime"
 )
@@ -17,7 +18,7 @@ type settableWriter interface {
 type UnverifiedBlockStore struct {
 	inMemoryBlocks map[ipld.Link][]byte
 	storer         ipld.Storer
-	dataSize uint64
+	dataSize       uint64
 }
 
 // New initializes a new unverified store with the given storer function for writing
@@ -40,7 +41,7 @@ func (ubs *UnverifiedBlockStore) AddUnverifiedBlock(lnk ipld.Link, data []byte)
 // PruneBlocks removes blocks from the unverified store without committing them,
 // if the passed in function returns true for the given link
 func (ubs *UnverifiedBlockStore) PruneBlocks(shouldPrune func(ipld.Link) bool) {
-	for link,data := range ubs.inMemoryBlocks {
+	for link, data := range ubs.inMemoryBlocks {
 		if shouldPrune(link) {
 			delete(ubs.inMemoryBlocks, link)
 			ubs.dataSize = ubs.dataSize - uint64(len(data))
@@ -53,6 +54,7 @@ func (ubs *UnverifiedBlockStore) PruneBlocks(shouldPrune func(ipld.Link) bool) {
 func (ubs *UnverifiedBlockStore) PruneBlock(link ipld.Link) {
 	delete(ubs.inMemoryBlocks, link)
 	ubs.dataSize = ubs.dataSize - uint64(len(ubs.inMemoryBlocks[link]))
+	log.Debugw("pruned in-memory block", "total_queued_bytes", ubs.dataSize)
 }
 
 // VerifyBlock verifies the data for the given link as being part of a traversal,
@@ -64,6 +66,7 @@ func (ubs *UnverifiedBlockStore) VerifyBlock(lnk ipld.Link) ([]byte, error) {
 	}
 	delete(ubs.inMemoryBlocks, lnk)
 	ubs.dataSize = ubs.dataSize - uint64(len(data))
+	log.Debugw("verified block", "total_queued_bytes", ubs.dataSize)
 
 	buffer, committer, err := ubs.storer(ipld.LinkContext{})
 	if err != nil {
diff --git a/requestmanager/executor/executor.go b/requestmanager/executor/executor.go
index b442b290..303ec368 100644
--- a/requestmanager/executor/executor.go
+++ b/requestmanager/executor/executor.go
@@ -22,7 +22,7 @@ import (
 
 // AsyncLoadFn is a function which given a request id and an ipld.Link, returns
 // a channel which will eventually return data for the link or an err
-type AsyncLoadFn func(graphsync.RequestID, ipld.Link) <-chan types.AsyncLoadResult
+type AsyncLoadFn func(peer.ID, graphsync.RequestID, ipld.Link) <-chan types.AsyncLoadResult
 
 // ExecutionEnv are request parameters that last between requests
 type ExecutionEnv struct {
@@ -111,7 +111,7 @@ func (re *requestExecutor) traverse() error {
 			return err
 		}
 		lnk, _ := traverser.CurrentRequest()
-		resultChan := re.env.Loader(re.request.ID(), lnk)
+		resultChan := re.env.Loader(re.p, re.request.ID(), lnk)
 		var result types.AsyncLoadResult
 		select {
 		case result = <-resultChan:
diff --git a/requestmanager/executor/executor_test.go b/requestmanager/executor/executor_test.go
index a05ab9f8..8ce54d7c 100644
--- a/requestmanager/executor/executor_test.go
+++ b/requestmanager/executor/executor_test.go
@@ -267,7 +267,7 @@ func TestRequestExecutionBlockChain(t *testing.T) {
 			configureLoader := data.configureLoader
 			if configureLoader == nil {
 				configureLoader = func(p peer.ID, requestID graphsync.RequestID, tbc *testutil.TestBlockChain, fal *testloader.FakeAsyncLoader, startStop [2]int) {
-					fal.SuccessResponseOn(requestID, tbc.Blocks(startStop[0], startStop[1]))
+					fal.SuccessResponseOn(p, requestID, tbc.Blocks(startStop[0], startStop[1]))
 				}
 			}
 			requestCtx, requestCancel := context.WithCancel(ctx)
diff --git a/requestmanager/requestmanager.go b/requestmanager/requestmanager.go
index 01a38f9f..4dfcb002 100644
--- a/requestmanager/requestmanager.go
+++ b/requestmanager/requestmanager.go
@@ -59,9 +59,9 @@ type PeerHandler interface {
 // results as new responses are processed
 type AsyncLoader interface {
 	StartRequest(graphsync.RequestID, string) error
-	ProcessResponse(responses map[graphsync.RequestID]metadata.Metadata,
+	ProcessResponse(p peer.ID, responses map[graphsync.RequestID]metadata.Metadata,
 		blks []blocks.Block)
-	AsyncLoad(requestID graphsync.RequestID, link ipld.Link) <-chan types.AsyncLoadResult
+	AsyncLoad(p peer.ID, requestID graphsync.RequestID, link ipld.Link) <-chan types.AsyncLoadResult
 	CompleteResponsesFor(requestID graphsync.RequestID)
 	CleanupRequest(requestID graphsync.RequestID)
 }
@@ -274,16 +274,15 @@ type processResponseMessage struct {
 	p         peer.ID
 	responses []gsmsg.GraphSyncResponse
 	blks      []blocks.Block
+	response  chan error
 }
 
 // ProcessResponses ingests the given responses from the network and
 // and updates the in progress requests based on those responses.
 func (rm *RequestManager) ProcessResponses(p peer.ID, responses []gsmsg.GraphSyncResponse,
 	blks []blocks.Block) {
-	select {
-	case rm.messages <- &processResponseMessage{p, responses, blks}:
-	case <-rm.ctx.Done():
-	}
+	response := make(chan error, 1)
+	rm.sendSyncMessage(&processResponseMessage{p, responses, blks, response}, response, nil)
 }
 
 type unpauseRequestMessage struct {
@@ -478,8 +477,12 @@ func (prm *processResponseMessage) handle(rm *RequestManager) {
 	filteredResponses = rm.filterResponsesForPeer(filteredResponses, prm.p)
 	rm.updateLastResponses(filteredResponses)
 	responseMetadata := metadataForResponses(filteredResponses)
-	rm.asyncLoader.ProcessResponse(responseMetadata, prm.blks)
+	rm.asyncLoader.ProcessResponse(prm.p, responseMetadata, prm.blks)
 	rm.processTerminations(filteredResponses)
+	select {
+	case <-rm.ctx.Done():
+	case prm.response <- nil:
+	}
 }
 
 func (rm *RequestManager) filterResponsesForPeer(responses []gsmsg.GraphSyncResponse, p peer.ID) []gsmsg.GraphSyncResponse {
diff --git a/requestmanager/requestmanager_test.go b/requestmanager/requestmanager_test.go
index 6ef5b77d..7e80270c 100644
--- a/requestmanager/requestmanager_test.go
+++ b/requestmanager/requestmanager_test.go
@@ -132,8 +132,8 @@ func TestNormalSimultaneousFetch(t *testing.T) {
 		requestRecords[0].gsr.ID(): firstMetadata1,
 		requestRecords[1].gsr.ID(): firstMetadata2,
 	})
-	td.fal.SuccessResponseOn(requestRecords[0].gsr.ID(), td.blockChain.AllBlocks())
-	td.fal.SuccessResponseOn(requestRecords[1].gsr.ID(), blockChain2.Blocks(0, 3))
+	td.fal.SuccessResponseOn(peers[0], requestRecords[0].gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], requestRecords[1].gsr.ID(), blockChain2.Blocks(0, 3))
 
 	td.blockChain.VerifyWholeChain(requestCtx, returnedResponseChan1)
 	blockChain2.VerifyResponseRange(requestCtx, returnedResponseChan2, 0, 3)
@@ -155,7 +155,7 @@ func TestNormalSimultaneousFetch(t *testing.T) {
 		requestRecords[1].gsr.ID(): moreMetadata,
 	})
 
-	td.fal.SuccessResponseOn(requestRecords[1].gsr.ID(), moreBlocks)
+	td.fal.SuccessResponseOn(peers[0], requestRecords[1].gsr.ID(), moreBlocks)
 
 	blockChain2.VerifyRemainder(requestCtx, returnedResponseChan2, 3)
 	testutil.VerifyEmptyErrors(requestCtx, t, returnedErrorChan1)
@@ -186,8 +186,8 @@ func TestCancelRequestInProgress(t *testing.T) {
 
 	td.requestManager.ProcessResponses(peers[0], firstResponses, firstBlocks)
 
-	td.fal.SuccessResponseOn(requestRecords[0].gsr.ID(), firstBlocks)
-	td.fal.SuccessResponseOn(requestRecords[1].gsr.ID(), firstBlocks)
+	td.fal.SuccessResponseOn(peers[0], requestRecords[0].gsr.ID(), firstBlocks)
+	td.fal.SuccessResponseOn(peers[0], requestRecords[1].gsr.ID(), firstBlocks)
 	td.blockChain.VerifyResponseRange(requestCtx1, returnedResponseChan1, 0, 3)
 	cancel1()
 	rr := readNNetworkRequests(requestCtx, t, td.requestRecordChan, 1)[0]
@@ -202,8 +202,8 @@ func TestCancelRequestInProgress(t *testing.T) {
 		gsmsg.NewResponse(requestRecords[1].gsr.ID(), graphsync.RequestCompletedFull, moreMetadata),
 	}
 	td.requestManager.ProcessResponses(peers[0], moreResponses, moreBlocks)
-	td.fal.SuccessResponseOn(requestRecords[0].gsr.ID(), moreBlocks)
-	td.fal.SuccessResponseOn(requestRecords[1].gsr.ID(), moreBlocks)
+	td.fal.SuccessResponseOn(peers[0], requestRecords[0].gsr.ID(), moreBlocks)
+	td.fal.SuccessResponseOn(peers[0], requestRecords[1].gsr.ID(), moreBlocks)
 
 	testutil.VerifyEmptyResponse(requestCtx, t, returnedResponseChan1)
 	td.blockChain.VerifyWholeChain(requestCtx, returnedResponseChan2)
@@ -243,7 +243,7 @@ func TestCancelRequestImperativeNoMoreBlocks(t *testing.T) {
 			gsmsg.NewResponse(requestRecords[0].gsr.ID(), graphsync.PartialResponse, firstMetadata),
 		}
 		td.requestManager.ProcessResponses(peers[0], firstResponses, firstBlocks)
-		td.fal.SuccessResponseOn(requestRecords[0].gsr.ID(), firstBlocks)
+		td.fal.SuccessResponseOn(peers[0], requestRecords[0].gsr.ID(), firstBlocks)
 	}()
 
 	timeoutCtx, timeoutCancel := context.WithTimeout(ctx, time.Second)
@@ -286,7 +286,7 @@ func TestCancelManagerExitsGracefully(t *testing.T) {
 		gsmsg.NewResponse(rr.gsr.ID(), graphsync.PartialResponse, firstMetadata),
 	}
 	td.requestManager.ProcessResponses(peers[0], firstResponses, firstBlocks)
-	td.fal.SuccessResponseOn(rr.gsr.ID(), firstBlocks)
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), firstBlocks)
 	td.blockChain.VerifyResponseRange(ctx, returnedResponseChan, 0, 3)
 	managerCancel()
 
@@ -296,7 +296,7 @@ func TestCancelManagerExitsGracefully(t *testing.T) {
 		gsmsg.NewResponse(rr.gsr.ID(), graphsync.RequestCompletedFull, moreMetadata),
 	}
 	td.requestManager.ProcessResponses(peers[0], moreResponses, moreBlocks)
-	td.fal.SuccessResponseOn(rr.gsr.ID(), moreBlocks)
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), moreBlocks)
 	testutil.VerifyEmptyResponse(requestCtx, t, returnedResponseChan)
 	testutil.VerifyEmptyErrors(requestCtx, t, returnedErrorChan)
 }
@@ -333,7 +333,7 @@ func TestLocallyFulfilledFirstRequestFailsLater(t *testing.T) {
 	rr := readNNetworkRequests(requestCtx, t, td.requestRecordChan, 1)[0]
 
 	// async loaded response responds immediately
-	td.fal.SuccessResponseOn(rr.gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), td.blockChain.AllBlocks())
 
 	td.blockChain.VerifyWholeChain(requestCtx, returnedResponseChan)
 
@@ -364,7 +364,7 @@ func TestLocallyFulfilledFirstRequestSucceedsLater(t *testing.T) {
 	rr := readNNetworkRequests(requestCtx, t, td.requestRecordChan, 1)[0]
 
 	// async loaded response responds immediately
-	td.fal.SuccessResponseOn(rr.gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), td.blockChain.AllBlocks())
 
 	td.blockChain.VerifyWholeChain(requestCtx, returnedResponseChan)
 
@@ -397,7 +397,7 @@ func TestRequestReturnsMissingBlocks(t *testing.T) {
 	}
 	td.requestManager.ProcessResponses(peers[0], firstResponses, nil)
 	for _, block := range td.blockChain.AllBlocks() {
-		td.fal.ResponseOn(rr.gsr.ID(), cidlink.Link{Cid: block.Cid()}, types.AsyncLoadResult{Data: nil, Err: fmt.Errorf("Terrible Thing")})
+		td.fal.ResponseOn(peers[0], rr.gsr.ID(), cidlink.Link{Cid: block.Cid()}, types.AsyncLoadResult{Data: nil, Err: fmt.Errorf("Terrible Thing")})
 	}
 	testutil.VerifyEmptyResponse(ctx, t, returnedResponseChan)
 	errs := testutil.CollectErrors(ctx, t, returnedErrorChan)
@@ -631,7 +631,7 @@ func TestBlockHooks(t *testing.T) {
 		td.fal.VerifyLastProcessedResponses(ctx, t, map[graphsync.RequestID]metadata.Metadata{
 			rr.gsr.ID(): firstMetadata,
 		})
-		td.fal.SuccessResponseOn(rr.gsr.ID(), firstBlocks)
+		td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), firstBlocks)
 
 		ur := readNNetworkRequests(requestCtx, t, td.requestRecordChan, 1)[0]
 		receivedUpdateData, has := ur.gsr.Extension(td.extensionName1)
@@ -695,7 +695,7 @@ func TestBlockHooks(t *testing.T) {
 		td.fal.VerifyLastProcessedResponses(ctx, t, map[graphsync.RequestID]metadata.Metadata{
 			rr.gsr.ID(): nextMetadata,
 		})
-		td.fal.SuccessResponseOn(rr.gsr.ID(), nextBlocks)
+		td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), nextBlocks)
 
 		ur = readNNetworkRequests(requestCtx, t, td.requestRecordChan, 1)[0]
 		receivedUpdateData, has = ur.gsr.Extension(td.extensionName1)
@@ -771,8 +771,8 @@ func TestOutgoingRequestHooks(t *testing.T) {
 		requestRecords[0].gsr.ID(): md,
 		requestRecords[1].gsr.ID(): md,
 	})
-	td.fal.SuccessResponseOn(requestRecords[0].gsr.ID(), td.blockChain.AllBlocks())
-	td.fal.SuccessResponseOn(requestRecords[1].gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], requestRecords[0].gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], requestRecords[1].gsr.ID(), td.blockChain.AllBlocks())
 
 	td.blockChain.VerifyWholeChainWithTypes(requestCtx, returnedResponseChan1)
 	td.blockChain.VerifyWholeChain(requestCtx, returnedResponseChan2)
@@ -824,7 +824,7 @@ func TestPauseResume(t *testing.T) {
 		}),
 	}
 	td.requestManager.ProcessResponses(peers[0], responses, td.blockChain.AllBlocks())
-	td.fal.SuccessResponseOn(rr.gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), td.blockChain.AllBlocks())
 
 	// attempt to unpause while request is not paused (note: hook on second block will keep it from
 	// reaching pause point)
@@ -865,7 +865,7 @@ func TestPauseResume(t *testing.T) {
 
 	// process responses
 	td.requestManager.ProcessResponses(peers[0], responses, td.blockChain.RemainderBlocks(pauseAt))
-	td.fal.SuccessResponseOn(rr.gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), td.blockChain.AllBlocks())
 
 	// verify the correct results are returned, picking up after where there request was paused
 	td.blockChain.VerifyRemainder(ctx, returnedResponseChan, pauseAt-1)
@@ -910,7 +910,7 @@ func TestPauseResumeExternal(t *testing.T) {
 		}),
 	}
 	td.requestManager.ProcessResponses(peers[0], responses, td.blockChain.AllBlocks())
-	td.fal.SuccessResponseOn(rr.gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), td.blockChain.AllBlocks())
 	// verify responses sent read ONLY for blocks BEFORE the pause
 	td.blockChain.VerifyResponseRange(ctx, returnedResponseChan, 0, pauseAt-1)
 	// wait for the pause to occur
@@ -945,7 +945,7 @@ func TestPauseResumeExternal(t *testing.T) {
 
 	// process responses
 	td.requestManager.ProcessResponses(peers[0], responses, td.blockChain.RemainderBlocks(pauseAt))
-	td.fal.SuccessResponseOn(rr.gsr.ID(), td.blockChain.AllBlocks())
+	td.fal.SuccessResponseOn(peers[0], rr.gsr.ID(), td.blockChain.AllBlocks())
 
 	// verify the correct results are returned, picking up after where there request was paused
 	td.blockChain.VerifyRemainder(ctx, returnedResponseChan, pauseAt-1)
diff --git a/requestmanager/testloader/asyncloader.go b/requestmanager/testloader/asyncloader.go
index 34813dfd..4a9c8100 100644
--- a/requestmanager/testloader/asyncloader.go
+++ b/requestmanager/testloader/asyncloader.go
@@ -8,6 +8,7 @@ import (
 	blocks "github.com/ipfs/go-block-format"
 	"github.com/ipld/go-ipld-prime"
 	cidlink "github.com/ipld/go-ipld-prime/linking/cid"
+	peer "github.com/libp2p/go-libp2p-peer"
 	"github.com/stretchr/testify/require"
 
 	"github.com/ipfs/go-graphsync"
@@ -17,6 +18,7 @@ import (
 )
 
 type requestKey struct {
+	p         peer.ID
 	requestID graphsync.RequestID
 	link      ipld.Link
 }
@@ -44,8 +46,8 @@ type FakeAsyncLoader struct {
 func NewFakeAsyncLoader() *FakeAsyncLoader {
 	return &FakeAsyncLoader{
 		responseChannels: make(map[requestKey]chan types.AsyncLoadResult),
-		responses:        make(chan map[graphsync.RequestID]metadata.Metadata, 1),
-		blks:             make(chan []blocks.Block, 1),
+		responses:        make(chan map[graphsync.RequestID]metadata.Metadata, 10),
+		blks:             make(chan []blocks.Block, 10),
 		storesRequested:  make(map[storeKey]struct{}),
 	}
 }
@@ -59,7 +61,7 @@ func (fal *FakeAsyncLoader) StartRequest(requestID graphsync.RequestID, name str
 }
 
 // ProcessResponse just records values passed to verify expectations later
-func (fal *FakeAsyncLoader) ProcessResponse(responses map[graphsync.RequestID]metadata.Metadata,
+func (fal *FakeAsyncLoader) ProcessResponse(p peer.ID, responses map[graphsync.RequestID]metadata.Metadata,
 	blks []blocks.Block) {
 	fal.responses <- responses
 	fal.blks <- blks
@@ -100,12 +102,12 @@ func (fal *FakeAsyncLoader) VerifyStoreUsed(t *testing.T, requestID graphsync.Re
 	fal.storesRequestedLk.RUnlock()
 }
 
-func (fal *FakeAsyncLoader) asyncLoad(requestID graphsync.RequestID, link ipld.Link) chan types.AsyncLoadResult {
+func (fal *FakeAsyncLoader) asyncLoad(p peer.ID, requestID graphsync.RequestID, link ipld.Link) chan types.AsyncLoadResult {
 	fal.responseChannelsLk.Lock()
-	responseChannel, ok := fal.responseChannels[requestKey{requestID, link}]
+	responseChannel, ok := fal.responseChannels[requestKey{p, requestID, link}]
 	if !ok {
 		responseChannel = make(chan types.AsyncLoadResult, 1)
-		fal.responseChannels[requestKey{requestID, link}] = responseChannel
+		fal.responseChannels[requestKey{p, requestID, link}] = responseChannel
 	}
 	fal.responseChannelsLk.Unlock()
 	return responseChannel
@@ -117,8 +119,8 @@ func (fal *FakeAsyncLoader) OnAsyncLoad(cb func(graphsync.RequestID, ipld.Link,
 }
 
 // AsyncLoad simulates an asynchronous load with responses stubbed by ResponseOn & SuccessResponseOn
-func (fal *FakeAsyncLoader) AsyncLoad(requestID graphsync.RequestID, link ipld.Link) <-chan types.AsyncLoadResult {
-	res := fal.asyncLoad(requestID, link)
+func (fal *FakeAsyncLoader) AsyncLoad(p peer.ID, requestID graphsync.RequestID, link ipld.Link) <-chan types.AsyncLoadResult {
+	res := fal.asyncLoad(p, requestID, link)
 	if fal.cb != nil {
 		fal.cb(requestID, link, res)
 	}
@@ -143,16 +145,16 @@ func (fal *FakeAsyncLoader) CleanupRequest(requestID graphsync.RequestID) {
 // ResponseOn sets the value returned when the given link is loaded for the given request. Because it's an
 // "asynchronous" load, this can be called AFTER the attempt to load this link -- and the client will only get
 // the response at that point
-func (fal *FakeAsyncLoader) ResponseOn(requestID graphsync.RequestID, link ipld.Link, result types.AsyncLoadResult) {
-	responseChannel := fal.asyncLoad(requestID, link)
+func (fal *FakeAsyncLoader) ResponseOn(p peer.ID, requestID graphsync.RequestID, link ipld.Link, result types.AsyncLoadResult) {
+	responseChannel := fal.asyncLoad(p, requestID, link)
 	responseChannel <- result
 	close(responseChannel)
 }
 
 // SuccessResponseOn is convenience function for setting several asynchronous responses at once as all successes
 // and returning the given blocks
-func (fal *FakeAsyncLoader) SuccessResponseOn(requestID graphsync.RequestID, blks []blocks.Block) {
+func (fal *FakeAsyncLoader) SuccessResponseOn(p peer.ID, requestID graphsync.RequestID, blks []blocks.Block) {
 	for _, block := range blks {
-		fal.ResponseOn(requestID, cidlink.Link{Cid: block.Cid()}, types.AsyncLoadResult{Data: block.RawData(), Local: false, Err: nil})
+		fal.ResponseOn(p, requestID, cidlink.Link{Cid: block.Cid()}, types.AsyncLoadResult{Data: block.RawData(), Local: false, Err: nil})
 	}
 }

From 59d011c0e712f1f120b1fbf86f83da1c72437c57 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Fri, 20 Aug 2021 18:24:22 -0700
Subject: [PATCH 08/13] feat(testplans): add car store support for faster
 testing

---
 testplans/graphsync/README.md              |  77 +++
 testplans/graphsync/blockstores.go         | 208 +++++++
 testplans/graphsync/go.mod                 |  33 +-
 testplans/graphsync/go.sum                 | 610 +++++++++++++++------
 testplans/graphsync/main.go                | 551 +++++++++++++++++--
 testplans/graphsync/manifest.toml          |  10 +
 testplans/graphsync/memory-stress-k8s.toml |  44 ++
 testplans/graphsync/memory-stress.toml     |  32 ++
 8 files changed, 1313 insertions(+), 252 deletions(-)
 create mode 100644 testplans/graphsync/README.md
 create mode 100644 testplans/graphsync/blockstores.go
 create mode 100644 testplans/graphsync/memory-stress-k8s.toml
 create mode 100644 testplans/graphsync/memory-stress.toml

diff --git a/testplans/graphsync/README.md b/testplans/graphsync/README.md
new file mode 100644
index 00000000..012f63b8
--- /dev/null
+++ b/testplans/graphsync/README.md
@@ -0,0 +1,77 @@
+# go-graphsync test-plan
+
+### What This Does
+
+This test plan measures a series of transfers between two nodes with graphsync, optionally comparing them to HTTP. It offers a wide variety of configurable parameters, which are documented here.
+
+### File Parameters
+
+These parameters configure the nature of the file that is transfered:
+
+- `size` - size of file to transfer, in human-friendly form 
+   - **Default**: 1MiB
+- `chunk_size` - unixfs chunk size (power of 2), controls the size of the leaves in file
+   - **Default**: 20 *(or 1MB chunks)*
+- `links_per_level` - unixfs links per level, controlles UnixFS DAG shape (wide vs deep) 
+   - **Default**: 1024
+- `raw_leaves` - should unixfs leaves be raw bytes (true), or wrapped as protonodes (false)
+   - **Default**: true
+- `disk_store` - when we ingest the file to unix fs, should the blockstore where it lives be stored on disk (true) or memory (false)
+   - **Default**: default - false
+- `concurrency` - number of files to construct and attempt to transfer *simultaneously*
+   - **Default**: 1
+
+Why you might want to change these:
+- obviously large file sizes more closely mirror use cases in a typical filecoin data transfer work load
+- the links per level, chunk size, and raw leaves allow you to expriment with different dag structures and see how graphsync performs in different conditions
+- the disk store allows you to measure the impact of datastore performance
+- concurrency allows you to test how graphsync performs under heavy loads of attempting transfer many files simultaneously
+
+### Networking Parameters
+
+These parameters control the parameters for the network layer
+- `secure_channel` - type secure encoding for the libp2p channel
+   - **Default**: "noise"
+- `latencies` - list of non-zero latencies to run the test under. 
+   - **Default**: 100ms, 200ms, 300ms
+- `no_latency_case` - also run a test case with no latency 
+   - **Default**: true
+- `bandwidths` - list limited bandwidths (egress bytes/s) to run the test under (written as humanized sizes). 
+   - **Default**: 10M, 1M, 512kb
+- `unlimited_bandwidth_case` - also run a test case with unlimited latency
+   - **Default**: true
+
+Why you might want to change these:
+- we may pay a penalty for the cost of transfering over secure io
+- bandwidth and latency parameters allow you to test graphsync under different network conditions. Importantly, these parameters generate a new test case for each instance, in a combinatorial form. So, if you you do two latencies and two bandwidths, you will get 4 rounds. And if concurrency is >1, each round with have more than one transfer
+
+### Graphsync Options
+
+The parameters control values passed constructing graphsync that may affect overall performance. Their default values are the same default values is no value is passed to the graphsync constructor
+
+- `max_memory_per_peer` - the maximum amount of data a responder can buffer in memory for a single peer while it waits for it to be sent out over the wire
+   - **Default**: 16MB
+- `max_memory_total` - the maximum amount of data a responder can buffer in memory for *all peers* while it waits for it to be sent out over the wire
+   - **Default**: 256MB
+- `max_in_progress_requests` - The maximum number of requests Graphsync will respond to at once. When graphsync receives more than this number of simultaneous in bound requests, those after the first six (with a priotization that distributes evenly among peers) will wait for other requests to finish before they beginnin responding.
+   - **Default**: 6
+
+These performance configuration parameters in GraphSync may cause bottlenecks with their default values. For example if the `concurrency` parameter is greater than 6, the remaining files will block until graphsync finishes some of the first 6. The buffering parameters may artificially lower performance on a fast connection. In a production context, they can be adjusted upwards based on the resources and goals of the graphsync node operator
+
+### HTTP Comparison Parameters
+
+The parameters allow you to compare graphsync performance against transfer of the same data under similar conditions over HTTP
+
+- `compare_http` - run the HTTP comparison test
+   - **Default**: true
+- `use_libp2p_http` - if we run the HTTP comparison test, should we use HTTP over libp2p (true) or just use standard HTTP on top of normal TCP/IP (false)
+   - **Default**: false
+
+### Diagnostic Parameters
+
+These parameters control what kind of additional diagnostic data the test will generate
+
+- `memory_snapshots` - specifies whether we should take memory snapshots as we run. Has three potention values: *none* (no snapshots), *simple* (take snapshots at the end of each request) and *detailed* (take snap shots every 10 blocks when requests are executing). Note: snapshoting will take a snapshot, then run GC, then take a snapshot again. *detailed* should not be used in any scenario where you are measuring timings
+   - **Default**: none
+- `block_diagnostics` - should we output detailed timings for block operations - blocks queued on the responder, blocks sent out on the network from the responder, responses received on the requestor, and blocks processed on the requestor
+   - **Default**: false
diff --git a/testplans/graphsync/blockstores.go b/testplans/graphsync/blockstores.go
new file mode 100644
index 00000000..f943a952
--- /dev/null
+++ b/testplans/graphsync/blockstores.go
@@ -0,0 +1,208 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"sync"
+
+	blocks "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-cid"
+	"github.com/ipfs/go-datastore"
+	"github.com/ipfs/go-datastore/query"
+	"github.com/ipfs/go-filestore"
+	bstore "github.com/ipfs/go-ipfs-blockstore"
+	carv2 "github.com/ipld/go-car/v2"
+	"github.com/ipld/go-car/v2/blockstore"
+	mh "github.com/multiformats/go-multihash"
+)
+
+type ClosableBlockstore interface {
+	bstore.Blockstore
+	io.Closer
+}
+
+var ErrNotFound = errors.New("not found")
+
+func IsNotFound(err error) bool {
+	return errors.Is(err, ErrNotFound)
+}
+
+// ReadWriteBlockstores tracks open ReadWrite CAR blockstores.
+type ReadWriteBlockstores struct {
+	mu     sync.RWMutex
+	stores map[string]*blockstore.ReadWrite
+}
+
+func NewReadWriteBlockstores() *ReadWriteBlockstores {
+	return &ReadWriteBlockstores{
+		stores: make(map[string]*blockstore.ReadWrite),
+	}
+}
+
+func (r *ReadWriteBlockstores) Get(key string) (*blockstore.ReadWrite, error) {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	if bs, ok := r.stores[key]; ok {
+		return bs, nil
+	}
+	return nil, fmt.Errorf("could not get blockstore for key %s: %w", key, ErrNotFound)
+}
+
+func (r *ReadWriteBlockstores) GetOrOpen(key string, path string, rootCid cid.Cid) (*blockstore.ReadWrite, error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	if bs, ok := r.stores[key]; ok {
+		return bs, nil
+	}
+
+	bs, err := blockstore.OpenReadWrite(path, []cid.Cid{rootCid}, blockstore.UseWholeCIDs(true))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create read-write blockstore: %w", err)
+	}
+	r.stores[key] = bs
+	return bs, nil
+}
+
+func (r *ReadWriteBlockstores) Untrack(key string) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	if bs, ok := r.stores[key]; ok {
+		// If the blockstore has already been finalized, calling Finalize again
+		// will return an error. For our purposes it's simplest if Finalize is
+		// idempotent so we just ignore any error.
+		_ = bs.Finalize()
+	}
+
+	delete(r.stores, key)
+	return nil
+}
+
+// ReadWriteFilestore opens the CAR in the specified path as as a read-write
+// blockstore, and fronts it with a Filestore whose positional mappings are
+// stored inside the CAR itself. It must be closed after done. Closing will
+// finalize the CAR blockstore.
+func ReadWriteFilestore(path string, roots ...cid.Cid) (ClosableBlockstore, error) {
+	rw, err := blockstore.OpenReadWrite(path, roots,
+		carv2.ZeroLengthSectionAsEOF(true),
+		blockstore.UseWholeCIDs(true),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	bs, err := FilestoreOf(rw)
+	if err != nil {
+		return nil, err
+	}
+
+	return &closableBlockstore{Blockstore: bs, closeFn: rw.Finalize}, nil
+}
+
+// FilestoreOf returns a FileManager/Filestore backed entirely by a
+// blockstore without requiring a datastore. It achieves this by coercing the
+// blockstore into a datastore. The resulting blockstore is suitable for usage
+// with DagBuilderHelper with DagBuilderParams#NoCopy=true.
+func FilestoreOf(bs bstore.Blockstore) (bstore.Blockstore, error) {
+	coercer := &dsCoercer{bs}
+
+	// the FileManager stores positional infos (positional mappings) in a
+	// datastore, which in our case is the blockstore coerced into a datastore.
+	//
+	// Passing the root dir as a base path makes me uneasy, but these filestores
+	// are only used locally.
+	fm := filestore.NewFileManager(coercer, "/")
+	fm.AllowFiles = true
+
+	// the Filestore sifts leaves (PosInfos) from intermediate nodes. It writes
+	// PosInfo leaves to the datastore (which in our case is the coerced
+	// blockstore), and the intermediate nodes to the blockstore proper (since
+	// they cannot be mapped to the file.
+	fstore := filestore.NewFilestore(bs, fm)
+	bs = bstore.NewIdStore(fstore)
+
+	return bs, nil
+}
+
+var cidBuilder = cid.V1Builder{Codec: cid.Raw, MhType: mh.IDENTITY}
+
+// dsCoercer coerces a Blockstore to present a datastore interface, apt for
+// usage with the Filestore/FileManager. Only PosInfos will be written through
+// this path.
+type dsCoercer struct {
+	bstore.Blockstore
+}
+
+var _ datastore.Batching = (*dsCoercer)(nil)
+
+func (crcr *dsCoercer) Get(key datastore.Key) (value []byte, err error) {
+	c, err := cidBuilder.Sum(key.Bytes())
+	if err != nil {
+		return nil, fmt.Errorf("failed to create cid: %w", err)
+	}
+
+	blk, err := crcr.Blockstore.Get(c)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get cid %s: %w", c, err)
+	}
+	return blk.RawData(), nil
+}
+
+func (crcr *dsCoercer) Put(key datastore.Key, value []byte) error {
+	c, err := cidBuilder.Sum(key.Bytes())
+	if err != nil {
+		return fmt.Errorf("failed to create cid: %w", err)
+	}
+	blk, err := blocks.NewBlockWithCid(value, c)
+	if err != nil {
+		return fmt.Errorf("failed to create block: %w", err)
+	}
+	if err := crcr.Blockstore.Put(blk); err != nil {
+		return fmt.Errorf("failed to put block: %w", err)
+	}
+	return nil
+}
+
+func (crcr *dsCoercer) Has(key datastore.Key) (exists bool, err error) {
+	c, err := cidBuilder.Sum(key.Bytes())
+	if err != nil {
+		return false, fmt.Errorf("failed to create cid: %w", err)
+	}
+	return crcr.Blockstore.Has(c)
+}
+
+func (crcr *dsCoercer) Batch() (datastore.Batch, error) {
+	return datastore.NewBasicBatch(crcr), nil
+}
+
+func (crcr *dsCoercer) GetSize(_ datastore.Key) (size int, err error) {
+	return 0, errors.New("operation NOT supported: GetSize")
+}
+
+func (crcr *dsCoercer) Query(_ query.Query) (query.Results, error) {
+	return nil, errors.New("operation NOT supported: Query")
+}
+
+func (crcr *dsCoercer) Delete(_ datastore.Key) error {
+	return errors.New("operation NOT supported: Delete")
+}
+
+func (crcr *dsCoercer) Sync(_ datastore.Key) error {
+	return errors.New("operation NOT supported: Sync")
+}
+
+func (crcr *dsCoercer) Close() error {
+	return nil
+}
+
+type closableBlockstore struct {
+	bstore.Blockstore
+	closeFn func() error
+}
+
+func (c *closableBlockstore) Close() error {
+	return c.closeFn()
+}
diff --git a/testplans/graphsync/go.mod b/testplans/graphsync/go.mod
index 7e2091b3..140daa90 100644
--- a/testplans/graphsync/go.mod
+++ b/testplans/graphsync/go.mod
@@ -3,31 +3,40 @@ module github.com/ipfs/go-graphsync/testplans/graphsync
 go 1.14
 
 require (
+	github.com/davidlazar/go-crypto v0.0.0-20190912175916-7055855a373f // indirect
+	github.com/dgraph-io/badger/v2 v2.2007.2
 	github.com/dustin/go-humanize v1.0.0
-	github.com/hannahhoward/all-selector v0.1.0
+	github.com/hannahhoward/all-selector v0.2.0
+	github.com/ipfs/go-block-format v0.0.3
 	github.com/ipfs/go-blockservice v0.1.3
-	github.com/ipfs/go-cid v0.0.6
+	github.com/ipfs/go-cid v0.0.8-0.20210716091050-de6c03deae1c
 	github.com/ipfs/go-datastore v0.4.4
-	github.com/ipfs/go-graphsync v0.1.2
-	github.com/ipfs/go-ipfs-blockstore v0.1.4
+	github.com/ipfs/go-ds-badger2 v0.1.1-0.20200708190120-187fc06f714e
+	github.com/ipfs/go-filestore v1.0.0
+	github.com/ipfs/go-graphsync v0.6.8
+	github.com/ipfs/go-ipfs-blockstore v1.0.3
 	github.com/ipfs/go-ipfs-chunker v0.0.5
 	github.com/ipfs/go-ipfs-exchange-offline v0.0.1
 	github.com/ipfs/go-ipfs-files v0.0.8
 	github.com/ipfs/go-ipld-format v0.2.0
-	github.com/ipfs/go-merkledag v0.3.1
+	github.com/ipfs/go-merkledag v0.3.2
 	github.com/ipfs/go-unixfs v0.2.4
-	github.com/ipld/go-ipld-prime v0.4.0
+	github.com/ipld/go-car/v2 v2.0.2
+	github.com/ipld/go-ipld-prime v0.5.1-0.20201021195245-109253e8a018
 	github.com/kr/text v0.2.0 // indirect
-	github.com/libp2p/go-libp2p v0.10.0
-	github.com/libp2p/go-libp2p-core v0.6.0
+	github.com/libp2p/go-libp2p v0.13.0
+	github.com/libp2p/go-libp2p-core v0.8.0
+	github.com/libp2p/go-libp2p-gostream v0.3.1
+	github.com/libp2p/go-libp2p-http v0.2.0
 	github.com/libp2p/go-libp2p-noise v0.1.1
 	github.com/libp2p/go-libp2p-secio v0.2.2
 	github.com/libp2p/go-libp2p-tls v0.1.3
+	github.com/libp2p/go-sockaddr v0.1.0 // indirect
+	github.com/multiformats/go-multiaddr v0.3.1
+	github.com/multiformats/go-multihash v0.0.15
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/testground/sdk-go v0.2.7-0.20201112151952-8ee00c80c3ec
-	golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208
-	golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae // indirect
-	google.golang.org/protobuf v1.25.0 // indirect
+	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/yaml.v2 v2.2.8 // indirect
-)
\ No newline at end of file
+)
diff --git a/testplans/graphsync/go.sum b/testplans/graphsync/go.sum
index ad1a4308..99e8b71b 100644
--- a/testplans/graphsync/go.sum
+++ b/testplans/graphsync/go.sum
@@ -1,32 +1,45 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.37.0/go.mod h1:TS1dMSSfndXH133OKGwekG838Om/cQT0BUHV3HcBgoo=
-dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU=
-dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
-dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4=
-dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
-git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
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 github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
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@@ -41,27 +54,37 @@ github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVa
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 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20181029155118-b69ba1387ce2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg=
-google.golang.org/genproto v0.0.0-20190306203927-b5d61aea6440/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190530194941-fb225487d101/go.mod h1:z3L6/3dTEVtUr6QSP8miRzeRqwQOioJ9I66odjN4I7s=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
-google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
+google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
+google.golang.org/grpc v1.22.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.28.1/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
+google.golang.org/grpc v1.31.1 h1:SfXqXS5hkufcdZ/mHtYCh53P2b+92WQq/DZcKLgsFRs=
+google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -887,26 +1129,32 @@ gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLks
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
+gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/src-d/go-cli.v0 v0.0.0-20181105080154-d492247bbc0d/go.mod h1:z+K8VcOYVYcSwSjGebuDL6176A1XskgbtNl64NSg+n8=
 gopkg.in/src-d/go-log.v1 v1.0.1/go.mod h1:GN34hKP0g305ysm2/hctJ0Y8nWP3zxXXJ8GFabTyABE=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI=
+gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
-rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
-sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck=
-sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
+honnef.co/go/tools v0.1.3 h1:qTakTkI6ni6LFD5sBwwsdSO+AQqbSIxOauHTTQKZ/7o=
+honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
+sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
+sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0/go.mod h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU=
diff --git a/testplans/graphsync/main.go b/testplans/graphsync/main.go
index eacd3782..ca2f6ac3 100644
--- a/testplans/graphsync/main.go
+++ b/testplans/graphsync/main.go
@@ -3,21 +3,28 @@ package main
 import (
 	"context"
 	"crypto/rand"
+	"encoding/json"
 	"fmt"
 	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
 	"os"
 	"path/filepath"
 	goruntime "runtime"
+	"runtime/pprof"
 	"strings"
+	gosync "sync"
 	"time"
 
+	dgbadger "github.com/dgraph-io/badger/v2"
 	"github.com/dustin/go-humanize"
 	allselector "github.com/hannahhoward/all-selector"
 	"github.com/ipfs/go-blockservice"
 	"github.com/ipfs/go-cid"
 	ds "github.com/ipfs/go-datastore"
 	dss "github.com/ipfs/go-datastore/sync"
-	badgerds "github.com/ipfs/go-ds-badger"
+	badgerds "github.com/ipfs/go-ds-badger2"
 	blockstore "github.com/ipfs/go-ipfs-blockstore"
 	chunk "github.com/ipfs/go-ipfs-chunker"
 	offline "github.com/ipfs/go-ipfs-exchange-offline"
@@ -31,9 +38,12 @@ import (
 	"github.com/libp2p/go-libp2p-core/host"
 	"github.com/libp2p/go-libp2p-core/metrics"
 	"github.com/libp2p/go-libp2p-core/peer"
+	gostream "github.com/libp2p/go-libp2p-gostream"
+	p2phttp "github.com/libp2p/go-libp2p-http"
 	noise "github.com/libp2p/go-libp2p-noise"
 	secio "github.com/libp2p/go-libp2p-secio"
 	tls "github.com/libp2p/go-libp2p-tls"
+	ma "github.com/multiformats/go-multiaddr"
 	"github.com/testground/sdk-go/network"
 	"github.com/testground/sdk-go/run"
 	"github.com/testground/sdk-go/runtime"
@@ -46,6 +56,60 @@ import (
 	"github.com/ipfs/go-graphsync/storeutil"
 )
 
+type AddrInfo struct {
+	peerAddr *peer.AddrInfo
+	ip       net.IP
+}
+
+func (pi AddrInfo) MarshalJSON() ([]byte, error) {
+	out := make(map[string]interface{})
+	peerJSON, err := pi.peerAddr.MarshalJSON()
+	if err != nil {
+		panic(fmt.Sprintf("error marshaling: %v", err))
+	}
+	out["PEER"] = string(peerJSON)
+
+	ip, err := pi.ip.MarshalText()
+	if err != nil {
+		panic(fmt.Sprintf("error marshaling: %v", err))
+	}
+	out["IP"] = string(ip)
+	return json.Marshal(out)
+}
+
+func (pi *AddrInfo) UnmarshalJSON(b []byte) error {
+	var data map[string]interface{}
+	err := json.Unmarshal(b, &data)
+	if err != nil {
+		panic(fmt.Sprintf("error unmarshaling: %v", err))
+	}
+
+	var pa peer.AddrInfo
+	pi.peerAddr = &pa
+	peerAddrData := data["PEER"].(string)
+	var peerData map[string]interface{}
+	err = json.Unmarshal([]byte(peerAddrData), &peerData)
+	if err != nil {
+		panic(err)
+	}
+	pid, err := peer.Decode(peerData["ID"].(string))
+	if err != nil {
+		panic(err)
+	}
+	pi.peerAddr.ID = pid
+	addrs, ok := peerData["Addrs"].([]interface{})
+	if ok {
+		for _, a := range addrs {
+			pi.peerAddr.Addrs = append(pi.peerAddr.Addrs, ma.StringCast(a.(string)))
+		}
+	}
+
+	if err := pi.ip.UnmarshalText([]byte(data["IP"].(string))); err != nil {
+		panic(fmt.Sprintf("error unmarshaling: %v", err))
+	}
+	return nil
+}
+
 var testcases = map[string]interface{}{
 	"stress": run.InitializedTestCaseFn(runStress),
 }
@@ -65,10 +129,12 @@ func (p networkParams) String() string {
 
 func runStress(runenv *runtime.RunEnv, initCtx *run.InitContext) error {
 	var (
-		size        = runenv.SizeParam("size")
-		concurrency = runenv.IntParam("concurrency")
-
-		networkParams = parseNetworkConfig(runenv)
+		size             = runenv.SizeParam("size")
+		concurrency      = runenv.IntParam("concurrency")
+		blockDiagnostics = runenv.BooleanParam("block_diagnostics")
+		networkParams    = parseNetworkConfig(runenv)
+		memorySnapshots  = parseMemorySnapshotsParam(runenv)
+		useCarStores     = runenv.BooleanParam("use_car_stores")
 	)
 	runenv.RecordMessage("started test instance")
 	runenv.RecordMessage("network params: %v", networkParams)
@@ -78,20 +144,109 @@ func runStress(runenv *runtime.RunEnv, initCtx *run.InitContext) error {
 
 	initCtx.MustWaitAllInstancesInitialized(ctx)
 
-	host, peers, _ := makeHost(ctx, runenv, initCtx)
+	host, ip, peers, _ := makeHost(ctx, runenv, initCtx)
 	defer host.Close()
 
+	datastore, err := createDatastore(runenv.BooleanParam("disk_store"))
+	if err != nil {
+		runenv.RecordMessage("datastore error: %s", err.Error())
+		return err
+	}
+
+	maxMemoryPerPeer := runenv.SizeParam("max_memory_per_peer")
+	maxMemoryTotal := runenv.SizeParam("max_memory_total")
+	maxInProgressRequests := runenv.IntParam("max_in_progress_requests")
 	var (
 		// make datastore, blockstore, dag service, graphsync
-		bs     = blockstore.NewBlockstore(dss.MutexWrap(createDatastore(runenv.BooleanParam("disk_store"))))
+		bs     = blockstore.NewBlockstore(dss.MutexWrap(datastore))
 		dagsrv = merkledag.NewDAGService(blockservice.New(bs, offline.Exchange(bs)))
 		gsync  = gsi.New(ctx,
 			gsnet.NewFromLibp2pHost(host),
 			storeutil.LoaderForBlockstore(bs),
 			storeutil.StorerForBlockstore(bs),
+			gsi.MaxMemoryPerPeerResponder(maxMemoryPerPeer),
+			gsi.MaxMemoryResponder(maxMemoryTotal),
+			gsi.MaxInProgressRequests(uint64(maxInProgressRequests)),
 		)
+		recorder = &runRecorder{memorySnapshots: memorySnapshots, blockDiagnostics: blockDiagnostics, runenv: runenv}
 	)
 
+	startTimes := make(map[struct {
+		peer.ID
+		gs.RequestID
+	}]time.Time)
+	var startTimesLk gosync.RWMutex
+	gsync.RegisterIncomingRequestHook(func(p peer.ID, request gs.RequestData, hookActions gs.IncomingRequestHookActions) {
+		hookActions.ValidateRequest()
+		startTimesLk.Lock()
+		startTimes[struct {
+			peer.ID
+			gs.RequestID
+		}{p, request.ID()}] = time.Now()
+		startTimesLk.Unlock()
+		if useCarStores {
+			hookActions.UsePersistenceOption(request.Root().String())
+		}
+	})
+	gsync.RegisterOutgoingRequestHook(func(p peer.ID, request gs.RequestData, hookActions gs.OutgoingRequestHookActions) {
+		startTimesLk.Lock()
+		startTimes[struct {
+			peer.ID
+			gs.RequestID
+		}{p, request.ID()}] = time.Now()
+		startTimesLk.Unlock()
+		if useCarStores {
+			hookActions.UsePersistenceOption(request.Root().String())
+		}
+	})
+	gsync.RegisterCompletedResponseListener(func(p peer.ID, request gs.RequestData, status gs.ResponseStatusCode) {
+		startTimesLk.RLock()
+		startTime, ok := startTimes[struct {
+			peer.ID
+			gs.RequestID
+		}{p, request.ID()}]
+		startTimesLk.RUnlock()
+		if ok && status == gs.RequestCompletedFull {
+			duration := time.Since(startTime)
+			recorder.recordRun(duration)
+		}
+	})
+	gsync.RegisterOutgoingBlockHook(func(p peer.ID, request gs.RequestData, block gs.BlockData, ha gs.OutgoingBlockHookActions) {
+		startTimesLk.RLock()
+		startTime := startTimes[struct {
+			peer.ID
+			gs.RequestID
+		}{p, request.ID()}]
+		startTimesLk.RUnlock()
+		recorder.recordBlockQueued(fmt.Sprintf("for request %d at %s", request.ID(), time.Since(startTime)))
+	})
+	gsync.RegisterBlockSentListener(func(p peer.ID, request gs.RequestData, block gs.BlockData) {
+		startTimesLk.RLock()
+		startTime := startTimes[struct {
+			peer.ID
+			gs.RequestID
+		}{p, request.ID()}]
+		startTimesLk.RUnlock()
+		recorder.recordBlock(fmt.Sprintf("sent for request %d at %s", request.ID(), time.Since(startTime)))
+	})
+	gsync.RegisterIncomingResponseHook(func(p peer.ID, response gs.ResponseData, actions gs.IncomingResponseHookActions) {
+		startTimesLk.RLock()
+		startTime := startTimes[struct {
+			peer.ID
+			gs.RequestID
+		}{p, response.RequestID()}]
+		startTimesLk.RUnlock()
+		recorder.recordResponse(fmt.Sprintf("for request %d at %s", response.RequestID(), time.Since(startTime)))
+	})
+	gsync.RegisterIncomingBlockHook(func(p peer.ID, response gs.ResponseData, block gs.BlockData, ha gs.IncomingBlockHookActions) {
+		startTimesLk.RLock()
+		startTime := startTimes[struct {
+			peer.ID
+			gs.RequestID
+		}{p, response.RequestID()}]
+		startTimesLk.RUnlock()
+		recorder.recordBlock(fmt.Sprintf("processed for request %d, cid %s, at %s", response.RequestID(), block.Link().String(), time.Since(startTime)))
+	})
 	defer initCtx.SyncClient.MustSignalAndWait(ctx, "done", runenv.TestInstanceCount)
 
 	switch runenv.TestGroupID {
@@ -102,23 +257,21 @@ func runStress(runenv *runtime.RunEnv, initCtx *run.InitContext) error {
 
 		runenv.RecordMessage("we are the provider")
 		defer runenv.RecordMessage("done provider")
-
-		gsync.RegisterIncomingRequestHook(func(p peer.ID, request gs.RequestData, hookActions gs.IncomingRequestHookActions) {
-			hookActions.ValidateRequest()
-		})
-
-		return runProvider(ctx, runenv, initCtx, dagsrv, size, networkParams, concurrency)
-
+		err := runProvider(ctx, runenv, initCtx, gsync, dagsrv, size, host, ip, networkParams, concurrency, memorySnapshots, useCarStores, recorder)
+		if err != nil {
+			runenv.RecordMessage("Error running provider: %s", err.Error())
+		}
+		return err
 	case "requestors":
 		runenv.RecordMessage("we are the requestor")
 		defer runenv.RecordMessage("done requestor")
 
-		p := *peers[0]
-		if err := host.Connect(ctx, p); err != nil {
+		p := peers[0]
+		if err := host.Connect(ctx, *p.peerAddr); err != nil {
 			return err
 		}
 		runenv.RecordMessage("done dialling provider")
-		return runRequestor(ctx, runenv, initCtx, gsync, p, dagsrv, networkParams, concurrency, size)
+		return runRequestor(ctx, runenv, initCtx, gsync, host, p, dagsrv, networkParams, concurrency, size, memorySnapshots, useCarStores, recorder)
 
 	default:
 		panic(fmt.Sprintf("unsupported group ID: %s\n", runenv.TestGroupID))
@@ -143,8 +296,12 @@ func parseNetworkConfig(runenv *runtime.RunEnv) []networkParams {
 	// prepend bandwidth=0 and latency=0 zero values; the first iteration will
 	// be a control iteration. The sidecar interprets zero values as no
 	// limitation on that attribute.
-	bandwidths = append([]uint64{0}, bandwidths...)
-	latencies = append([]time.Duration{0}, latencies...)
+	if runenv.BooleanParam("unlimited_bandwidth_case") {
+		bandwidths = append([]uint64{0}, bandwidths...)
+	}
+	if runenv.BooleanParam("no_latency_case") {
+		latencies = append([]time.Duration{0}, latencies...)
+	}
 
 	var ret []networkParams
 	for _, bandwidth := range bandwidths {
@@ -158,35 +315,89 @@ func parseNetworkConfig(runenv *runtime.RunEnv) []networkParams {
 	return ret
 }
 
-func runRequestor(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext, gsync gs.GraphExchange, p peer.AddrInfo, dagsrv format.DAGService, networkParams []networkParams, concurrency int, size uint64) error {
+type snapshotMode uint
+
+const (
+	snapshotNone snapshotMode = iota
+	snapshotSimple
+	snapshotDetailed
+)
+
+const (
+	detailedSnapshotFrequency = 10
+)
+
+func parseMemorySnapshotsParam(runenv *runtime.RunEnv) snapshotMode {
+	memorySnapshotsString := runenv.StringParam("memory_snapshots")
+	switch memorySnapshotsString {
+	case "none":
+		return snapshotNone
+	case "simple":
+		return snapshotSimple
+	case "detailed":
+		return snapshotDetailed
+	default:
+		panic("invalid memory_snapshot parameter")
+	}
+}
+
+func runRequestor(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext, gsync gs.GraphExchange, h host.Host, p *AddrInfo, dagsrv format.DAGService, networkParams []networkParams, concurrency int, size uint64, memorySnapshots snapshotMode, useCarStores bool, recorder *runRecorder) error {
 	var (
 		cids []cid.Cid
 		// create a selector for the whole UnixFS dag
 		sel = allselector.AllSelector
 	)
 
+	runHTTPTest := runenv.BooleanParam("compare_http")
+	useLibP2p := runenv.BooleanParam("use_libp2p_http")
+	var client *http.Client
+	if runHTTPTest {
+		if useLibP2p {
+			tr := &http.Transport{}
+			tr.RegisterProtocol("libp2p", p2phttp.NewTransport(h))
+			client = &http.Client{Transport: tr}
+		} else {
+			client = http.DefaultClient
+		}
+	}
+	var rwBlockstores *ReadWriteBlockstores
+	if useCarStores {
+		rwBlockstores = NewReadWriteBlockstores()
+	}
+
 	for round, np := range networkParams {
 		var (
-			topicCid  = sync.NewTopic(fmt.Sprintf("cid-%d", round), []cid.Cid{})
-			stateNext = sync.State(fmt.Sprintf("next-%d", round))
-			stateNet  = sync.State(fmt.Sprintf("network-configured-%d", round))
+			topicCid    = sync.NewTopic(fmt.Sprintf("cid-%d", round), []cid.Cid{})
+			stateNext   = sync.State(fmt.Sprintf("next-%d", round))
+			stateNet    = sync.State(fmt.Sprintf("network-configured-%d", round))
+			stateFinish = sync.State(fmt.Sprintf("finish-%d", round))
 		)
 
 		// wait for all instances to be ready for the next state.
 		initCtx.SyncClient.MustSignalAndWait(ctx, stateNext, runenv.TestInstanceCount)
+		recorder.beginRun(np, size, concurrency, round)
 
 		// clean up previous CIDs to attempt to free memory
 		// TODO does this work?
 		_ = dagsrv.RemoveMany(ctx, cids)
 
-		runenv.RecordMessage("===== ROUND %d: latency=%s, bandwidth=%d =====", round, np.latency, np.bandwidth)
-
 		sctx, scancel := context.WithCancel(ctx)
 		cidCh := make(chan []cid.Cid, 1)
 		initCtx.SyncClient.MustSubscribe(sctx, topicCid, cidCh)
 		cids = <-cidCh
 		scancel()
 
+		if useCarStores {
+			for _, c := range cids {
+				bs, err := rwBlockstores.GetOrOpen(c.String(), filepath.Join(os.TempDir(), c.String()), c)
+				if err != nil {
+					return err
+				}
+				loader := storeutil.LoaderForBlockstore(bs)
+				storer := storeutil.StorerForBlockstore(bs)
+				gsync.RegisterPersistenceOption(c.String(), loader, storer)
+			}
+		}
 		// run GC to get accurate-ish stats.
 		goruntime.GC()
 		goruntime.GC()
@@ -195,8 +406,7 @@ func runRequestor(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.Init
 
 		errgrp, grpctx := errgroup.WithContext(ctx)
 		for _, c := range cids {
-			c := c   // capture
-			np := np // capture
+			c := c // capture
 
 			errgrp.Go(func() error {
 				// make a go-ipld-prime link for the root UnixFS node
@@ -206,26 +416,41 @@ func runRequestor(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.Init
 				runenv.RecordMessage("\t>>> requesting CID %s", c)
 
 				start := time.Now()
-				_, errCh := gsync.Request(grpctx, p.ID, clink, sel)
+				respCh, errCh := gsync.Request(grpctx, p.peerAddr.ID, clink, sel)
+				for range respCh {
+				}
 				for err := range errCh {
 					return err
 				}
 				dur := time.Since(start)
 
-				runenv.RecordMessage("\t<<< request complete with no errors")
-				runenv.RecordMessage("***** ROUND %d observed duration (lat=%s,bw=%d): %s", round, np.latency, np.bandwidth, dur)
-
-				measurement := fmt.Sprintf("duration.sec,lat=%s,bw=%s,concurrency=%d,size=%s", np.latency, humanize.IBytes(np.bandwidth), concurrency, humanize.Bytes(size))
-				measurement = strings.Replace(measurement, " ", "", -1)
-				runenv.R().RecordPoint(measurement, float64(dur)/float64(time.Second))
-
+				recorder.recordRun(dur)
 				// verify that we have the CID now.
 				if node, err := dagsrv.Get(grpctx, c); err != nil {
 					return err
 				} else if node == nil {
 					return fmt.Errorf("finished graphsync request, but CID not in store")
 				}
-
+				if runHTTPTest {
+					// request file directly over http
+					start = time.Now()
+					var resp *http.Response
+					var err error
+					if useLibP2p {
+						resp, err = client.Get(fmt.Sprintf("libp2p://%s/%s", p.peerAddr.ID.String(), c.String()))
+					} else {
+						resp, err = client.Get(fmt.Sprintf("http://%s:8080/%s", p.ip.String(), c.String()))
+					}
+					if err != nil {
+						panic(err)
+					}
+					bytesRead, err := io.Copy(ioutil.Discard, resp.Body)
+					if err != nil {
+						panic(err)
+					}
+					dur = time.Since(start)
+					recorder.recordHTTPRun(dur, bytesRead)
+				}
 				return nil
 			})
 		}
@@ -233,26 +458,62 @@ func runRequestor(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.Init
 		if err := errgrp.Wait(); err != nil {
 			return err
 		}
+
+		// wait for all instances to finish running
+		initCtx.SyncClient.MustSignalAndWait(ctx, stateFinish, runenv.TestInstanceCount)
+
+		if memorySnapshots == snapshotSimple || memorySnapshots == snapshotDetailed {
+			recordSnapshots(runenv, size, np, concurrency, "total")
+		}
 	}
 
 	return nil
 }
 
-func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext, dagsrv format.DAGService, size uint64, networkParams []networkParams, concurrency int) error {
+func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext, gsync gs.GraphExchange, dagsrv format.DAGService, size uint64, h host.Host, ip net.IP, networkParams []networkParams, concurrency int, memorySnapshots snapshotMode, useCarStores bool, recorder *runRecorder) error {
 	var (
 		cids       []cid.Cid
 		bufferedDS = format.NewBufferedDAG(ctx, dagsrv)
 	)
 
+	runHTTPTest := runenv.BooleanParam("compare_http")
+	useLibP2p := runenv.BooleanParam("use_libp2p_http")
+	var svr *http.Server
+	if runHTTPTest {
+		if useLibP2p {
+			listener, _ := gostream.Listen(h, p2phttp.DefaultP2PProtocol)
+			defer listener.Close()
+			// start an http server on port 8080
+			runenv.RecordMessage("creating http server at libp2p://%s", h.ID().String())
+			svr = &http.Server{}
+			go func() {
+				if err := svr.Serve(listener); err != nil {
+					runenv.RecordMessage("shutdown http server at libp2p://%s", h.ID().String())
+				}
+			}()
+		} else {
+			runenv.RecordMessage("creating http server at http://%s:8080", ip.String())
+			svr = &http.Server{Addr: ":8080"}
+
+			go func() {
+				if err := svr.ListenAndServe(); err != nil {
+					runenv.RecordMessage("shutdown http server at http://%s:8080", ip.String())
+				}
+			}()
+		}
+	}
+
 	for round, np := range networkParams {
 		var (
-			topicCid  = sync.NewTopic(fmt.Sprintf("cid-%d", round), []cid.Cid{})
-			stateNext = sync.State(fmt.Sprintf("next-%d", round))
-			stateNet  = sync.State(fmt.Sprintf("network-configured-%d", round))
+			topicCid    = sync.NewTopic(fmt.Sprintf("cid-%d", round), []cid.Cid{})
+			stateNext   = sync.State(fmt.Sprintf("next-%d", round))
+			stateFinish = sync.State(fmt.Sprintf("finish-%d", round))
+			stateNet    = sync.State(fmt.Sprintf("network-configured-%d", round))
 		)
 
 		// wait for all instances to be ready for the next state.
 		initCtx.SyncClient.MustSignalAndWait(ctx, stateNext, runenv.TestInstanceCount)
+		recorder.beginRun(np, size, concurrency, round)
 
 		// remove the previous CIDs from the dag service; hopefully this
 		// will delete them from the store and free up memory.
@@ -261,13 +522,46 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 		}
 		cids = cids[:0]
 
-		runenv.RecordMessage("===== ROUND %d: latency=%s, bandwidth=%d =====", round, np.latency, np.bandwidth)
-
 		// generate as many random files as the concurrency level.
 		for i := 0; i < concurrency; i++ {
 			// file with random data
-			file := files.NewReaderFile(io.LimitReader(rand.Reader, int64(size)))
+			data := io.LimitReader(rand.Reader, int64(size))
+			f, err := ioutil.TempFile(os.TempDir(), "unixfs-")
+			if err != nil {
+				panic(err)
+			}
+			if _, err := io.Copy(f, data); err != nil {
+				panic(err)
+			}
+			_, err = f.Seek(0, 0)
+			if err != nil {
+				panic(err)
+			}
+			stat, err := f.Stat()
+			if err != nil {
+				panic(err)
+			}
+			file, err := files.NewReaderPathFile(f.Name(), f, stat)
+			if err != nil {
+				panic(err)
+			}
 
+			var bs ClosableBlockstore
+			if useCarStores {
+				filestore, err := ioutil.TempFile(os.TempDir(), "fsindex-")
+				if err != nil {
+					panic(err)
+				}
+				n := filestore.Name()
+				err = filestore.Close()
+				if err != nil {
+					panic(err)
+				}
+				bs, err = ReadWriteFilestore(n)
+				bsvc := blockservice.New(bs, offline.Exchange(bs))
+				dags := merkledag.NewDAGService(bsvc)
+				bufferedDS = format.NewBufferedDAG(ctx, dags)
+			}
 			unixfsChunkSize := uint64(1) << runenv.IntParam("chunk_size")
 			unixfsLinksPerLevel := runenv.IntParam("links_per_level")
 
@@ -278,6 +572,9 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 				Dagserv:    bufferedDS,
 			}
 
+			if _, err := file.Seek(0, 0); err != nil {
+				panic(err)
+			}
 			db, err := params.New(chunk.NewSizeSplitter(file, int64(unixfsChunkSize)))
 			if err != nil {
 				return fmt.Errorf("unable to setup dag builder: %w", err)
@@ -288,6 +585,25 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 				return fmt.Errorf("unable to create unix fs node: %w", err)
 			}
 
+			if runHTTPTest {
+				// set up http server to send file
+				http.HandleFunc(fmt.Sprintf("/%s", node.Cid()), func(w http.ResponseWriter, r *http.Request) {
+					fileReader, err := os.Open(f.Name())
+					defer fileReader.Close()
+					if err != nil {
+						panic(err)
+					}
+					_, err = io.Copy(w, fileReader)
+					if err != nil {
+						panic(err)
+					}
+				})
+			}
+			if useCarStores {
+				loader := storeutil.LoaderForBlockstore(bs)
+				storer := storeutil.StorerForBlockstore(bs)
+				gsync.RegisterPersistenceOption(node.Cid().String(), loader, storer)
+			}
 			cids = append(cids, node.Cid())
 		}
 
@@ -296,7 +612,9 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 		}
 
 		// run GC to get accurate-ish stats.
-		goruntime.GC()
+		if memorySnapshots == snapshotSimple || memorySnapshots == snapshotDetailed {
+			recordSnapshots(runenv, size, np, concurrency, "pre")
+		}
 		goruntime.GC()
 
 		runenv.RecordMessage("\tCIDs are: %v", cids)
@@ -314,12 +632,25 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 			CallbackTarget: 1,
 		})
 		runenv.RecordMessage("\tnetwork configured for round %d", round)
+
+		// wait for all instances to finish running
+		initCtx.SyncClient.MustSignalAndWait(ctx, stateFinish, runenv.TestInstanceCount)
+
+		if memorySnapshots == snapshotSimple || memorySnapshots == snapshotDetailed {
+			recordSnapshots(runenv, size, np, concurrency, "total")
+		}
+
 	}
 
+	if runHTTPTest {
+		if err := svr.Shutdown(ctx); err != nil {
+			panic(err)
+		}
+	}
 	return nil
 }
 
-func makeHost(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext) (host.Host, []*peer.AddrInfo, *metrics.BandwidthCounter) {
+func makeHost(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext) (host.Host, net.IP, []*AddrInfo, *metrics.BandwidthCounter) {
 	secureChannel := runenv.StringParam("secure_channel")
 
 	var security libp2p.Option
@@ -355,18 +686,21 @@ func makeHost(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitCont
 		ai = &peer.AddrInfo{ID: id, Addrs: host.Addrs()}
 
 		// the peers topic where all instances will advertise their AddrInfo.
-		peersTopic = sync.NewTopic("peers", new(peer.AddrInfo))
+		peersTopic = sync.NewTopic("peers", new(AddrInfo))
 
 		// initialize a slice to store the AddrInfos of all other peers in the run.
-		peers = make([]*peer.AddrInfo, 0, runenv.TestInstanceCount-1)
+		peers = make([]*AddrInfo, 0, runenv.TestInstanceCount-1)
 	)
 
 	// Publish our own.
-	initCtx.SyncClient.MustPublish(ctx, peersTopic, ai)
+	initCtx.SyncClient.MustPublish(ctx, peersTopic, &AddrInfo{
+		peerAddr: ai,
+		ip:       ip,
+	})
 
 	// Now subscribe to the peers topic and consume all addresses, storing them
 	// in the peers slice.
-	peersCh := make(chan *peer.AddrInfo)
+	peersCh := make(chan *AddrInfo)
 	sctx, scancel := context.WithCancel(ctx)
 	defer scancel()
 
@@ -376,7 +710,7 @@ func makeHost(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitCont
 	for len(peers) < cap(peers) {
 		select {
 		case ai := <-peersCh:
-			if ai.ID == id {
+			if ai.peerAddr.ID == id {
 				continue // skip over ourselves.
 			}
 			peers = append(peers, ai)
@@ -385,32 +719,131 @@ func makeHost(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitCont
 		}
 	}
 
-	return host, peers, bwcounter
+	return host, ip, peers, bwcounter
 }
 
-func createDatastore(diskStore bool) ds.Datastore {
+func createDatastore(diskStore bool) (ds.Datastore, error) {
 	if !diskStore {
-		return ds.NewMapDatastore()
+		return ds.NewMapDatastore(), nil
 	}
 
 	// create temporary directory for badger datastore
 	path := filepath.Join(os.TempDir(), "datastore")
 	if _, err := os.Stat(path); os.IsNotExist(err) {
 		if err := os.MkdirAll(path, 0755); err != nil {
-			panic(err)
+			return nil, err
 		}
 	} else if err != nil {
-		panic(err)
+		return nil, err
 	}
 
 	// create disk based badger datastore
 	defopts := badgerds.DefaultOptions
-	defopts.SyncWrites = false
-	defopts.Truncate = true
+
+	defopts.Options = dgbadger.DefaultOptions("").WithTruncate(true).
+		WithValueThreshold(1 << 10)
 	datastore, err := badgerds.NewDatastore(path, &defopts)
 	if err != nil {
-		panic(err)
+		return nil, err
 	}
 
-	return datastore
+	return datastore, nil
+}
+
+func recordSnapshots(runenv *runtime.RunEnv, size uint64, np networkParams, concurrency int, postfix string) error {
+	runenv.RecordMessage("Recording heap profile...")
+	err := writeHeap(runenv, size, np, concurrency, fmt.Sprintf("%s-pre-gc", postfix))
+	if err != nil {
+		return err
+	}
+	goruntime.GC()
+	goruntime.GC()
+	err = writeHeap(runenv, size, np, concurrency, fmt.Sprintf("%s-post-gc", postfix))
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func writeHeap(runenv *runtime.RunEnv, size uint64, np networkParams, concurrency int, postfix string) error {
+	snapshotName := fmt.Sprintf("heap_lat-%s_bw-%s_concurrency-%d_size-%s_%s", np.latency, humanize.IBytes(np.bandwidth), concurrency, humanize.Bytes(size), postfix)
+	snapshotName = strings.Replace(snapshotName, " ", "", -1)
+	snapshotFile, err := runenv.CreateRawAsset(snapshotName)
+	if err != nil {
+		return err
+	}
+	err = pprof.WriteHeapProfile(snapshotFile)
+	if err != nil {
+		return err
+	}
+	err = snapshotFile.Close()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+type runRecorder struct {
+	memorySnapshots  snapshotMode
+	blockDiagnostics bool
+	index            int
+	queuedIndex      int
+	responseIndex    int
+	np               networkParams
+	size             uint64
+	concurrency      int
+	round            int
+	runenv           *runtime.RunEnv
+	measurement      string
+}
+
+func (rr *runRecorder) recordBlock(postfix string) {
+	if rr.blockDiagnostics {
+		rr.runenv.RecordMessage("block %d %s", rr.index, postfix)
+	}
+	if rr.memorySnapshots == snapshotDetailed {
+		if rr.index%detailedSnapshotFrequency == 0 {
+			recordSnapshots(rr.runenv, rr.size, rr.np, rr.concurrency, fmt.Sprintf("incremental-%d", rr.index))
+		}
+	}
+	rr.index++
+}
+
+func (rr *runRecorder) recordBlockQueued(postfix string) {
+	if rr.blockDiagnostics {
+		rr.runenv.RecordMessage("block %d queued %s", rr.queuedIndex, postfix)
+	}
+	rr.queuedIndex++
+}
+
+func (rr *runRecorder) recordResponse(postfix string) {
+	if rr.blockDiagnostics {
+		rr.runenv.RecordMessage("response %d received %s", rr.responseIndex, postfix)
+	}
+	rr.responseIndex++
+}
+
+func (rr *runRecorder) recordRun(duration time.Duration) {
+	rr.runenv.RecordMessage("\t<<< graphsync request complete with no errors")
+	rr.runenv.RecordMessage("***** ROUND %d observed duration (lat=%s,bw=%d): %s", rr.round, rr.np.latency, rr.np.bandwidth, duration)
+	rr.runenv.R().RecordPoint(rr.measurement+",transport=graphsync", float64(duration)/float64(time.Second))
+}
+
+func (rr *runRecorder) recordHTTPRun(duration time.Duration, bytesRead int64) {
+	rr.runenv.RecordMessage(fmt.Sprintf("\t<<< http request complete with no errors, read %d bytes", bytesRead))
+	rr.runenv.RecordMessage("***** ROUND %d observed http duration (lat=%s,bw=%d): %s", rr.round, rr.np.latency, rr.np.bandwidth, duration)
+	rr.runenv.R().RecordPoint(rr.measurement+",transport=http", float64(duration)/float64(time.Second))
+}
+
+func (rr *runRecorder) beginRun(np networkParams, size uint64, concurrency int, round int) {
+
+	rr.concurrency = concurrency
+	rr.np = np
+	rr.size = size
+	rr.index = 0
+	rr.round = round
+	rr.runenv.RecordMessage("===== ROUND %d: latency=%s, bandwidth=%d =====", rr.round, rr.np.latency, rr.np.bandwidth)
+	measurement := fmt.Sprintf("duration.sec,lat=%s,bw=%s,concurrency=%d,size=%s", rr.np.latency, humanize.IBytes(rr.np.bandwidth), rr.concurrency, humanize.Bytes(rr.size))
+	measurement = strings.Replace(measurement, " ", "", -1)
+	rr.measurement = measurement
 }
diff --git a/testplans/graphsync/manifest.toml b/testplans/graphsync/manifest.toml
index ed12991a..357aa392 100644
--- a/testplans/graphsync/manifest.toml
+++ b/testplans/graphsync/manifest.toml
@@ -26,3 +26,13 @@ chunk_size = { type = "int", desc = "unixfs chunk size (power of 2)", default =
 links_per_level = { type = "int", desc = "unixfs links per level", default = "1024" }
 raw_leaves = { type = "bool", desc = "should unixfs leaves be left unwrapped", default = "true"}
 disk_store = { type = "bool", desc = "should data be stored on disk (true) or memory (false)", default = "false"}
+memory_snapshots = { type = "string", desc = "what kind of memory snapshots to take (none, simple, detailed)", default = "none" }
+compare_http = { type = "bool", desc = "run a comparison against http", default = "true"}
+max_memory_per_peer = { type = "int", desc = "max memory a responder can queue up per peer", default = "16MiB"}
+max_memory_total = { type = "int", desc = "max memory a responder can queue up total", default = "256MiB"}
+unlimited_bandwidth_case = { type = "bool", desc = "disable unlimited bandwidth test case", default = "true"}
+no_latency_case = { type = "bool", desc = "disable no latency test case", default = "true"}
+block_diagnostics = { type = "bool", desc = "output records of block times", default = "false" }
+use_libp2p_http = { type = "bool", desc = "use libp2p over http for http comparison", default = "false"}
+max_in_progress_requests = { type = "int", desc = "max requests processed by a responder at once", default = "6" }
+use_car_stores = { type = "bool", desc = "use carV2 filestores instead of datastore", default = "true"}
\ No newline at end of file
diff --git a/testplans/graphsync/memory-stress-k8s.toml b/testplans/graphsync/memory-stress-k8s.toml
new file mode 100644
index 00000000..d5ed2ecd
--- /dev/null
+++ b/testplans/graphsync/memory-stress-k8s.toml
@@ -0,0 +1,44 @@
+[metadata]
+name = "memory-stress"
+
+[global]
+plan = "graphsync"
+case = "stress"
+total_instances = 2
+builder = "docker:go"
+runner = "cluster:k8s"
+
+[global.build_config]
+push_registry=true
+go_proxy_mode="remote"
+go_proxy_url="http://localhost:8081"
+registry_type="aws"
+
+[global.run.test_params]
+size      = "1GB"
+latencies = '[]'
+bandwidths = '[]'
+concurrency = "20"
+chunk_size = "21"
+links_per_level = "1024"
+raw_leaves = "true"
+disk_store = "true"
+memory_snapshots = "detailed"
+compare_http = "false"
+max_in_progress_requests = "20"
+max_memory_per_peer = "256MiB"
+max_memory_total = "1GiB"
+
+[[groups]]
+id = "providers"
+instances = { count = 1 }
+[groups.resources]
+memory = "4096Mi"
+cpu = "1000m"
+
+[[groups]]
+id = "requestors"
+instances = { count = 1 }
+[groups.resources]
+memory = "4096Mi"
+cpu = "1000m"
\ No newline at end of file
diff --git a/testplans/graphsync/memory-stress.toml b/testplans/graphsync/memory-stress.toml
new file mode 100644
index 00000000..69f85359
--- /dev/null
+++ b/testplans/graphsync/memory-stress.toml
@@ -0,0 +1,32 @@
+[metadata]
+name = "memory-stress"
+
+[global]
+plan = "graphsync"
+case = "stress"
+total_instances = 2
+builder = "docker:go"
+runner = "local:docker"
+
+[global.run.test_params]
+size      = "1GB"
+latencies = '[]'
+bandwidths = '[]'
+concurrency = "20"
+chunk_size = "21"
+links_per_level = "1024"
+raw_leaves = "true"
+disk_store = "true"
+memory_snapshots = "detailed"
+compare_http = "false"
+max_in_progress_requests = "20"
+max_memory_per_peer = "256MiB"
+max_memory_total = "1GiB"
+
+[[groups]]
+id = "providers"
+instances = { count = 1 }
+
+[[groups]]
+id = "requestors"
+instances = { count = 1 }
\ No newline at end of file

From b334f53193dda11f93d716c520fb93881f81b109 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Fri, 20 Aug 2021 18:33:30 -0700
Subject: [PATCH 09/13] fix

---
 testplans/graphsync/memory-stress-k8s.toml | 2 +-
 testplans/graphsync/memory-stress.toml     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/testplans/graphsync/memory-stress-k8s.toml b/testplans/graphsync/memory-stress-k8s.toml
index d5ed2ecd..63c89e3e 100644
--- a/testplans/graphsync/memory-stress-k8s.toml
+++ b/testplans/graphsync/memory-stress-k8s.toml
@@ -19,7 +19,7 @@ size      = "1GB"
 latencies = '[]'
 bandwidths = '[]'
 concurrency = "20"
-chunk_size = "21"
+chunk_size = "20"
 links_per_level = "1024"
 raw_leaves = "true"
 disk_store = "true"
diff --git a/testplans/graphsync/memory-stress.toml b/testplans/graphsync/memory-stress.toml
index 69f85359..bea58cc0 100644
--- a/testplans/graphsync/memory-stress.toml
+++ b/testplans/graphsync/memory-stress.toml
@@ -13,7 +13,7 @@ size      = "1GB"
 latencies = '[]'
 bandwidths = '[]'
 concurrency = "20"
-chunk_size = "21"
+chunk_size = "20"
 links_per_level = "1024"
 raw_leaves = "true"
 disk_store = "true"

From f830cc5f5ca67251a7fe6333ebedbc27a32ff52d Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Fri, 20 Aug 2021 18:58:57 -0700
Subject: [PATCH 10/13] fix(testplan): fix file buffer ds setup

---
 testplans/graphsync/main.go                | 8 ++++++--
 testplans/graphsync/memory-stress-k8s.toml | 2 +-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/testplans/graphsync/main.go b/testplans/graphsync/main.go
index ca2f6ac3..590f6946 100644
--- a/testplans/graphsync/main.go
+++ b/testplans/graphsync/main.go
@@ -547,6 +547,7 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 			}
 
 			var bs ClosableBlockstore
+			var fileDS = bufferedDS
 			if useCarStores {
 				filestore, err := ioutil.TempFile(os.TempDir(), "fsindex-")
 				if err != nil {
@@ -560,7 +561,7 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 				bs, err = ReadWriteFilestore(n)
 				bsvc := blockservice.New(bs, offline.Exchange(bs))
 				dags := merkledag.NewDAGService(bsvc)
-				bufferedDS = format.NewBufferedDAG(ctx, dags)
+				fileDS = format.NewBufferedDAG(ctx, dags)
 			}
 			unixfsChunkSize := uint64(1) << runenv.IntParam("chunk_size")
 			unixfsLinksPerLevel := runenv.IntParam("links_per_level")
@@ -569,7 +570,7 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 				Maxlinks:   unixfsLinksPerLevel,
 				RawLeaves:  runenv.BooleanParam("raw_leaves"),
 				CidBuilder: nil,
-				Dagserv:    bufferedDS,
+				Dagserv:    fileDS,
 			}
 
 			if _, err := file.Seek(0, 0); err != nil {
@@ -603,6 +604,9 @@ func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitC
 				loader := storeutil.LoaderForBlockstore(bs)
 				storer := storeutil.StorerForBlockstore(bs)
 				gsync.RegisterPersistenceOption(node.Cid().String(), loader, storer)
+				if err := fileDS.Commit(); err != nil {
+					return fmt.Errorf("unable to commit unix fs node: %w", err)
+				}
 			}
 			cids = append(cids, node.Cid())
 		}
diff --git a/testplans/graphsync/memory-stress-k8s.toml b/testplans/graphsync/memory-stress-k8s.toml
index 63c89e3e..78e3124d 100644
--- a/testplans/graphsync/memory-stress-k8s.toml
+++ b/testplans/graphsync/memory-stress-k8s.toml
@@ -18,7 +18,7 @@ registry_type="aws"
 size      = "1GB"
 latencies = '[]'
 bandwidths = '[]'
-concurrency = "20"
+concurrency = "1"
 chunk_size = "20"
 links_per_level = "1024"
 raw_leaves = "true"

From 13e0ad8a477b6e3819e446e1896e3c915c784d10 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Fri, 20 Aug 2021 21:48:21 -0700
Subject: [PATCH 11/13] fix(asyncloader): cleanup load logic for async loader

---
 requestmanager/asyncloader/asyncloader.go | 26 ++++++++---------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/requestmanager/asyncloader/asyncloader.go b/requestmanager/asyncloader/asyncloader.go
index afe79999..a9e7e916 100644
--- a/requestmanager/asyncloader/asyncloader.go
+++ b/requestmanager/asyncloader/asyncloader.go
@@ -371,28 +371,20 @@ func setupAttemptQueue(loader ipld.Loader, storer ipld.Storer, allocator Allocat
 	loadAttemptQueue := loadattemptqueue.New(func(p peer.ID, requestID graphsync.RequestID, link ipld.Link) types.AsyncLoadResult {
 		// load from response cache
 		data, err := responseCache.AttemptLoad(requestID, link)
+		if err != nil {
+			return types.AsyncLoadResult{Err: err, Local: false}
+		}
 		if data != nil {
 			allocator.ReleaseBlockMemory(p, uint64(len(data)))
+			return types.AsyncLoadResult{Data: data, Local: false}
 		}
-		if data == nil && err == nil {
-			// fall back to local store
-			stream, loadErr := loader(link, ipld.LinkContext{})
-			if stream != nil && loadErr == nil {
-				localData, loadErr := ioutil.ReadAll(stream)
-				if loadErr == nil && localData != nil {
-					return types.AsyncLoadResult{
-						Data:  localData,
-						Err:   nil,
-						Local: true,
-					}
-				}
+		// fall back to local store
+		if stream, err := loader(link, ipld.LinkContext{}); stream != nil && err == nil {
+			if localData, err := ioutil.ReadAll(stream); err == nil && localData != nil {
+				return types.AsyncLoadResult{Data: localData, Local: true}
 			}
 		}
-		return types.AsyncLoadResult{
-			Data:  data,
-			Err:   err,
-			Local: false,
-		}
+		return types.AsyncLoadResult{Local: false}
 	})
 
 	return responseCache, loadAttemptQueue

From 6244096861a82bbbbf075c39fad9c0cfb5b99499 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Tue, 24 Aug 2021 18:15:00 -0700
Subject: [PATCH 12/13] docs(CHANGELOG): update for 0.6.9 release

also cleanup a couple style issues
---
 CHANGELOG.md                                    | 17 +++++++++++++++++
 message/pb/message.pb.go                        |  5 +++--
 .../unverifiedblockstore.go                     |  5 +++--
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index daa12a40..1221fbce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,23 @@ some significant breaking changes.
 | Hannah Howard | 2 | +3316/-3015 | 25 |
 | Steven Allen | 1 | +95/-227 | 5 |
 
+# go-graphsync 0.6.9
+
+This release adds additional log statements and addresses a memory performance bug on the requesting side when making lots of outgoing requests at once
+
+### Changelog
+
+- github.com/ipfs/go-graphsync:
+  - Back pressure incoming responses ([ipfs/go-graphsync#204](https://github.com/ipfs/go-graphsync/pull/204))
+  - Log unverified blockstore memory consumption ([ipfs/go-graphsync#201](https://github.com/ipfs/go-graphsync/pull/201))
+
+### Contributors
+
+| Contributor | Commits | Lines ± | Files Changed |
+|-------------|---------|---------|---------------|
+| hannahhoward | 5 | +1535/-381 | 25 |
+| Aarsh Shah | 5 | +27/-17 | 5 |
+
 # go-graphsync 0.6.8
 
 ### Changelog
diff --git a/message/pb/message.pb.go b/message/pb/message.pb.go
index 367f4350..2a440bd5 100644
--- a/message/pb/message.pb.go
+++ b/message/pb/message.pb.go
@@ -7,12 +7,13 @@
 package graphsync_message_pb
 
 import (
+	reflect "reflect"
+	sync "sync"
+
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
 )
 
 const (
diff --git a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
index 75f6fc7c..3399b50b 100644
--- a/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
+++ b/requestmanager/asyncloader/unverifiedblockstore/unverifiedblockstore.go
@@ -2,6 +2,7 @@ package unverifiedblockstore
 
 import (
 	"fmt"
+
 	logging "github.com/ipfs/go-log/v2"
 	ipld "github.com/ipld/go-ipld-prime"
 )
@@ -17,7 +18,7 @@ type settableWriter interface {
 type UnverifiedBlockStore struct {
 	inMemoryBlocks map[ipld.Link][]byte
 	storer         ipld.BlockWriteOpener
-	dataSize uint64
+	dataSize       uint64
 }
 
 // New initializes a new unverified store with the given storer function for writing
@@ -40,7 +41,7 @@ func (ubs *UnverifiedBlockStore) AddUnverifiedBlock(lnk ipld.Link, data []byte)
 // PruneBlocks removes blocks from the unverified store without committing them,
 // if the passed in function returns true for the given link
 func (ubs *UnverifiedBlockStore) PruneBlocks(shouldPrune func(ipld.Link) bool) {
-	for link,data := range ubs.inMemoryBlocks {
+	for link, data := range ubs.inMemoryBlocks {
 		if shouldPrune(link) {
 			delete(ubs.inMemoryBlocks, link)
 			ubs.dataSize = ubs.dataSize - uint64(len(data))

From 3f129a82307b587796515e23b68a287bea840242 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Tue, 24 Aug 2021 18:54:21 -0700
Subject: [PATCH 13/13] style(lint): fix lint errs

---
 requestmanager/asyncloader/asyncloader.go | 8 +++++++-
 requestmanager/requestmanager.go          | 3 ++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/requestmanager/asyncloader/asyncloader.go b/requestmanager/asyncloader/asyncloader.go
index ead4c770..5869d7ac 100644
--- a/requestmanager/asyncloader/asyncloader.go
+++ b/requestmanager/asyncloader/asyncloader.go
@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 
 	blocks "github.com/ipfs/go-block-format"
+	logging "github.com/ipfs/go-log/v2"
 	"github.com/ipld/go-ipld-prime"
 	peer "github.com/libp2p/go-libp2p-core/peer"
 
@@ -17,6 +18,8 @@ import (
 	"github.com/ipfs/go-graphsync/requestmanager/types"
 )
 
+var log = logging.Logger("gs-asyncloader")
+
 type loaderMessage interface {
 	handle(al *AsyncLoader)
 }
@@ -372,7 +375,10 @@ func setupAttemptQueue(lsys ipld.LinkSystem, allocator Allocator) (*responsecach
 			return types.AsyncLoadResult{Err: err, Local: false}
 		}
 		if data != nil {
-			allocator.ReleaseBlockMemory(p, uint64(len(data)))
+			err = allocator.ReleaseBlockMemory(p, uint64(len(data)))
+			if err != nil {
+				log.Warningf("releasing block memory: %s", err.Error())
+			}
 			return types.AsyncLoadResult{Data: data, Local: false}
 		}
 		// fall back to local store
diff --git a/requestmanager/requestmanager.go b/requestmanager/requestmanager.go
index c97e6661..bf387cd1 100644
--- a/requestmanager/requestmanager.go
+++ b/requestmanager/requestmanager.go
@@ -286,7 +286,8 @@ type processResponseMessage struct {
 func (rm *RequestManager) ProcessResponses(p peer.ID, responses []gsmsg.GraphSyncResponse,
 	blks []blocks.Block) {
 	response := make(chan error, 1)
-	rm.sendSyncMessage(&processResponseMessage{p, responses, blks, response}, response, nil)
+	err := rm.sendSyncMessage(&processResponseMessage{p, responses, blks, response}, response, nil)
+	log.Warningf("ProcessResponses: %s", err)
 }
 
 type unpauseRequestMessage struct {