codec: remove unnecessary allocations in ProtoCodec.MarshalBinaryLengthPrefixed #6877
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…thPrefixed Improve ProtoCodec.MarshalBinaryLengthPrefixed by removing the need to use a *bytes.Buffer and instead use an array and invoke binary.PutUvarint, and directly create the respective length prefixed concatentation. With this change we get the following improvement in all dimenions of throughput, bytes allocated, number of allocations per operation. ```shell $ benchstat before.txt after.txt name old time/op new time/op delta ProtoCodecMarshalBinaryLengthPrefixed-8 295ns ± 2% 177ns ± 3% -39.92% (p=0.000 n=20+20) name old speed new speed delta ProtoCodecMarshalBinaryLengthPrefixed-8 505MB/s ± 2% 841MB/s ± 3% +66.44% (p=0.000 n=20+20) name old alloc/op new alloc/op delta ProtoCodecMarshalBinaryLengthPrefixed-8 576B ± 0% 336B ± 0% -41.67% (p=0.000 n=20+20) name old allocs/op new allocs/op delta ProtoCodecMarshalBinaryLengthPrefixed-8 5.00 ± 0% 3.00 ± 0% -40.00% (p=0.000 n=20+20) ``` Fixes #6875
odeke-em
requested review from
aaronc,
alessio,
alexanderbez,
clevinson,
fedekunze and
jgimeno
as code owners
Codecov Report
@@ Coverage Diff @@
## master #6877 +/- ##
=======================================
Coverage 61.31% 61.31%
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Files 511 510 -1
Lines 31646 31638 -8
=======================================
- Hits 19403 19399 -4
+ Misses 10727 10725 -2
+ Partials 1516 1514 -2 |
tac0turtle
reviewed
Jul 29, 2020
Use binary.MaxVarintLen64 instead of 10 Co-authored-by: Marko <marbar3778@yahoo.com>
aaronc
approved these changes
Jul 29, 2020
aaronc
added
A:automerge
…shalBinaryLengthPrefixed
mergify
bot
deleted the
codec-improve-encodeUvarint-ProtoCodec.MarshalBinaryLengthPrefixed
branch
|
Thanks @marbar3778 and @aaronc for the reviews and merge! |
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Improve ProtoCodec.MarshalBinaryLengthPrefixed by removing the need
to use a *bytes.Buffer and instead use an array and invoke
binary.PutUvarint, and directly create the respective length prefixed
concatentation.
With this change we get the following improvement in all dimensions
of throughput, bytes allocated, number of allocations per operation.
Closes: #6875
Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.
docs/) or specification (x/<module>/spec/)godoccomments.Unreleasedsection inCHANGELOG.mdFiles changedin the Github PR explorerCodecov Reportin the comment section below once CI passes