Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

cmd/utils: grant snapshot cache to trie if disabled #21416

Merged
merged 2 commits into from
Aug 6, 2020

Conversation

karalabe
Copy link
Member

@karalabe karalabe commented Aug 5, 2020

When we implemented the snapshotter, we distributed the --cache memory allowance as:

  • 50% leveldb
  • 25% trie dirty cache
  • 15% trie clean cache
  • 10% snapshot cache (reduced from the clean cache)

Before merging the snapshotter however, we hid it behind an opt-in flag --snapshot. We did not however implement this opt-in mechanism in the cache distribution code, so if snapshots are not enabled, we ran with 90% allowance only. This PR fixes it by granting the snapshot cache back to the trie clean cache if snapshots are disabled.

Fun fact, this fault only happens on mainnet or with custom --cache settings, because the defaults are calculated differently. Which were also "borked" as they followed an older hack where the snapshot cache was piled on top as 25% extra. This PR also fixes that for testnets by using 15+10 split instead of 25+25 (out of 25).

TrieCleanCacheJournal: "triecache",
TrieCleanCacheRejournal: 60 * time.Minute,
TrieDirtyCache: 256,
TrieTimeout: 60 * time.Minute,
SnapshotCache: 256,
SnapshotCache: 102,
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

102 looks very specific, I assume it's well backed by scientific research to pinpoint that it's better than 100

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

256*2/5 :)

@karalabe karalabe added this to the 1.9.19 milestone Aug 6, 2020
@karalabe karalabe merged commit 68754f3 into ethereum:master Aug 6, 2020
enriquefynn pushed a commit to enriquefynn/go-ethereum that referenced this pull request Mar 10, 2021
* cmd/utils: grant snapshot cache to trie if disabled

* eth: fix up default non-mainnet cache distribution
tony-ricciardi pushed a commit to tony-ricciardi/go-ethereum that referenced this pull request Jan 20, 2022
Cherry pick bug fixes from upstream for snapshots, which will enable higher transaction throughput. It also enables snapshots by default (which is one of the commits pulled from upstream).

Upstream commits included:

68754f3 cmd/utils: grant snapshot cache to trie if disabled (ethereum#21416)
3ee91b9 core/state/snapshot: reduce disk layer depth during generation
a15d71a core/state/snapshot: stop generator if it hits missing trie nodes (ethereum#21649)
43c278c core/state: disable snapshot iteration if it's not fully constructed (ethereum#21682)
b63e3c3 core: improve snapshot journal recovery (ethereum#21594)
e640267 core/state/snapshot: fix journal recovery from generating old journal (ethereum#21775)
7b7b327 core/state/snapshot: update generator marker in sync with flushes
167ff56 core/state/snapshot: gethring -> gathering typo (ethereum#22104)
d2e1b17 snapshot, trie: fixed typos, mostly in snapshot pkg (ethereum#22133)
c4deebb core/state/snapshot: add generation logs to storage too
5e9f5ca core/state/snapshot: write snapshot generator in batch (ethereum#22163)
18145ad core/state: maintain one more diff layer (ethereum#21730)
04a7226 snapshot: merge loops for better performance (ethereum#22160)
994cdc6 cmd/utils: enable snapshots by default
9ec3329 core/state/snapshot: ensure Cap retains a min number of layers
52e5c38 core/state: copy the snap when copying the state (ethereum#22340)
a31f6d5 core/state/snapshot: fix panic on missing parent
61ff3e8 core/state/snapshot, ethdb: track deletions more accurately (ethereum#22582)
c79fc20 core/state/snapshot: fix data race in diff layer (ethereum#22540)

Other changes
Commit f9b5530 (not from upstream) fixes an incorrect default DatabaseCache value due to an earlier bad merge.

Tested
Automated tests
Testing on a private testnet
Backwards compatibility
Enabling snapshots by default is a breaking change in terms of the CLI flags, but will not cause backwards incompatibility between the node and other nodes.

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
Co-authored-by: gary rong <garyrong0905@gmail.com>
Co-authored-by: Melvin Junhee Woo <melvin.woo@groundx.xyz>
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Edgar Aroutiounian <edgar.factorial@gmail.com>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2 participants