buffer,util: refactor for performance #12153
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Trott
added
buffer
nodejs-github-bot
added
buffer
internal/util.js definied toInteger() and toLength() but they were only used by buffer.js. Inlining these small functions results in a small but statistically-significant performance gain.
$ node benchmark/compare.js --old /var/tmp/node-master --new /var/tmp/node-new --filter buffer-from --set 'source=arraybuffer' --set 'source=arraybuffer-middle' buffers > /var/tmp/compare.csv
[00:01:09|% 100| 1/1 files | 60/60 runs | 4/4 configs]: Done
$ cat /var/tmp/compare.csv | Rscript benchmark/compare.R
improvement confidence p.value
buffers/buffer-from.js n=1024 len=10 source="arraybuffer-middle" 7.12 % *** 1.415439e-18
buffers/buffer-from.js n=1024 len=10 source="arraybuffer" 0.05 % 9.482883e-01
buffers/buffer-from.js n=1024 len=2048 source="arraybuffer-middle" 4.91 % ** 2.134363e-03
buffers/buffer-from.js n=1024 len=2048 source="arraybuffer" 0.94 % 2.267840e-01
$ |
joyeecheung
approved these changes
Apr 1, 2017
targos
approved these changes
Apr 2, 2017
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I thought the idea was to use these in other places @thefourtheye ? |
jasnell
approved these changes
Apr 3, 2017
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@cjihrig ... I'm sure it could be, but until there's a need for that, this should be fine. We can revert this if it proves necessary. |
jasnell
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Apr 4, 2017
internal/util.js definied toInteger() and toLength() but they were only used by buffer.js. Inlining these small functions results in a small but statistically-significant performance gain. PR-URL: #12153 Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: James M Snell <[email protected]>
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Landed in 1e6186e |
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cc @Trott |
Trott
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Apr 11, 2017
internal/util.js definied toInteger() and toLength() but they were only used by buffer.js. Inlining these small functions results in a small but statistically-significant performance gain. PR-URL: nodejs#12153 Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: James M Snell <[email protected]>
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Trott
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Apr 21, 2017
internal/util.js definied toInteger() and toLength() but they were only used by buffer.js. Inlining these small functions results in a small but statistically-significant performance gain. PR-URL: nodejs#12153 Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: James M Snell <[email protected]>
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evanlucas
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May 1, 2017
internal/util.js definied toInteger() and toLength() but they were only used by buffer.js. Inlining these small functions results in a small but statistically-significant performance gain. PR-URL: #12153 Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: James M Snell <[email protected]>
MylesBorins
added
the
baking-for-lts
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should we backport to v6.x? I've added the baking label as we should wait a bit if it is going to land |
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I am going to take a wild guess here. The performance improvement seen here could be because of the hidden |
4 tasks
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@MylesBorins Backport to v6.x PR: #13046 |
Trott
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May 19, 2017
internal/util.js defined toInteger() and toLength() but they were only used by buffer.js. Inlining these small functions results in a small but statistically-significant performance gain. PR-URL: nodejs#12153 Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: James M Snell <[email protected]>
Trott
added
dont-land-on-v6.x
and removed
baking-for-lts
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internal/util.jsdefiniedtoInteger()andtoLength()but they were onlyused by
lib/buffer.js. Inlining these small functions results in a small butstatistically-significant performance gain.
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passesAffected core subsystem(s)
buffer util