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perf(p2p/channel): Speedup NewDelimitedWriter (backport #2949) (#2969) (backport #40) #49

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merged 1 commit into from
May 3, 2024

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@mergify mergify bot commented May 3, 2024

Speeds up 5% of the non-IO time overhead from
channel.WritePacketMsgTo. The CPU time overhead in this function is quite significant, CPU time is more than 3 times the syscall time for writing to the net buffer. Working on a github issue for more substantial refactor / time eliminations, but this 3s is easy enough.

We don't even use this codepath, so this make slice is entirely wasted. However we should do things that reduce this overhead further.

image


PR checklist


PR checklist

  • Tests written/updated
  • Changelog entry added in .changelog (we use unclog to manage our changelog)
  • Updated relevant documentation (docs/ or spec/) and code comments

This is an automatic backport of pull request #40 done by [Mergify](https://mergify.com).

cometbft#2969) (#40)

Speeds up 5% of the non-IO time overhead from
`channel.WritePacketMsgTo`. The CPU time overhead in this function is
quite significant, CPU time is more than 3 times the syscall time for
writing to the net buffer. Working on a github issue for more
substantial refactor / time eliminations, but this 3s is easy enough.

We don't even use this codepath, so this make slice is entirely wasted.
However we should do things that reduce this overhead further.

![image](https://github.com/cometbft/cometbft/assets/6440154/e02e45bf-d6ff-4e11-9983-e81ca1102dc8)

---

#### PR checklist

- [x] Tests written/updated
- [x] Changelog entry added in `.changelog` (we use
[unclog](https://github.com/informalsystems/unclog) to manage our
changelog)
- [x] Updated relevant documentation (`docs/` or `spec/`) and code
comments
- [x] Title follows the [Conventional
Commits](https://www.conventionalcommits.org/en/v1.0.0/) spec
<hr>This is an automatic backport of pull request cometbft#2949 done by
[Mergify](https://mergify.com).

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>
(cherry picked from commit 3d1b9dc)
@czarcas7ic czarcas7ic merged commit e3a14f0 into osmo-v25/v0.37.4 May 3, 2024
7 of 14 checks passed
@mergify mergify bot deleted the mergify/bp/osmo-v25/v0.37.4/pr-40 branch May 3, 2024 00:23
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