events: performance regression in event benchmarks #12657
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events
Issues and PRs related to the events subsystem / EventEmitter.
performance
Issues and PRs related to the performance of Node.js.
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Cross posting from #12655 (comment):
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mscdex
added
events
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I think the problem for this regression is https://bugs.chromium.org/p/v8/issues/detail?id=6376. Specifically https://github.com/nodejs/node/blob/master/lib/events.js#L378, as the regression is present in the remove benchmarks. |
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I'm working on the |
kisg
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May 10, 2017
For small arrays, it's way faster to just move the elements instead of doing the fairly complex and heavy-weight left-trimming. Crankshaft has had this optimization for small arrays already; this CL more or less ports this functionality to TurboFan, which yields a 4x speed-up when using shift on small arrays (with up to 16 elements). This should recover some of the regressions reported in the Node.js issues nodejs/node#12657 and discovered for the syncthrough module using https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js as benchmark. [email protected] BUG=v8:6376 Review-Url: https://codereview.chromium.org/2874453002 Cr-Commit-Position: refs/heads/master@{#45216}
3 tasks
ofrobots
added a commit
to ofrobots/node
that referenced
this issue
May 23, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
nodejs#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{nodejs#45216}
PR-URL: nodejs#13162
Reviewed-By: fhinkel - Franziska Hinkelmann <[email protected]>
Reviewed-By: jasnell - James M Snell <[email protected]>
addaleax
pushed a commit
that referenced
this issue
May 25, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13162
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: James M Snell <[email protected]>
jasnell
pushed a commit
that referenced
this issue
May 25, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13162
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: James M Snell <[email protected]>
jasnell
pushed a commit
that referenced
this issue
May 28, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13162
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: James M Snell <[email protected]>
targos
added a commit
to targos/node
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Jun 6, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
nodejs#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{nodejs#45216}
targos
added a commit
to targos/node
that referenced
this issue
Jun 7, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
nodejs#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{nodejs#45216}
PR-URL: nodejs#13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
addaleax
pushed a commit
that referenced
this issue
Jun 17, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
addaleax
pushed a commit
that referenced
this issue
Jun 21, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
addaleax
pushed a commit
that referenced
this issue
Jun 24, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
rvagg
pushed a commit
that referenced
this issue
Jun 29, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
addaleax
pushed a commit
that referenced
this issue
Jul 11, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
addaleax
pushed a commit
that referenced
this issue
Jul 18, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
targos
added a commit
to targos/node
that referenced
this issue
Jul 21, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
nodejs#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{nodejs#45216}
PR-URL: nodejs#13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
addaleax
pushed a commit
that referenced
this issue
Jul 24, 2017
Original commit message:
[turbofan] Boost performance of Array.prototype.shift by 4x.
For small arrays, it's way faster to just move the elements instead of
doing the fairly complex and heavy-weight left-trimming. Crankshaft has
had this optimization for small arrays already; this CL more or less
ports this functionality to TurboFan, which yields a 4x speed-up when
using shift on small arrays (with up to 16 elements).
This should recover some of the regressions reported in the Node.js issues
#12657
and discovered for the syncthrough module using
https://github.com/mcollina/syncthrough/blob/master/benchmarks/basic.js
as benchmark.
[email protected]
BUG=v8:6376
Review-Url: https://codereview.chromium.org/2874453002
Cr-Commit-Position: refs/heads/master@{#45216}
PR-URL: #13263
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>
Reviewed-By: Myles Borins <[email protected]>
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Comparing 8.3.0 with 7.9.0: |
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Those numbers were taken using the 8.3.0 versions of those benchmarks? |
I used the version in the master branch. |
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Also: I ran it on macOS 10.12.6. |
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I've tested on Windows 7 x 64, vs V8 6.0 / 6.1 / 6.2 and things seem getting better: V8 5.5.372.43 (Node.js 7.10.1) vs V8 6.0.286.52 (Node.js 8.3.0)
improvement confidence p.value
events\\ee-add-remove.js n=250000 -42.77 % *** 4.141429e-90
events\\ee-emit-multi-args.js n=2000000 -7.56 % *** 3.765808e-27
events\\ee-emit.js n=2000000 -9.59 % *** 5.277457e-27
events\\ee-listener-count-on-prototype.js n=50000000 12.72 % *** 9.573892e-38
events\\ee-listeners-many.js n=5000000 21.15 % *** 4.807840e-43
events\\ee-listeners.js n=5000000 6.91 % *** 1.381210e-06
events\\ee-once.js n=20000000 -45.65 % *** 1.205400e-57
V8 5.5.372.43 (Node.js 7.10.1) vs V8 6.1.556 (Node.js 9.0.0 2017-07-20 V8-canary)
improvement confidence p.value
events\\ee-add-remove.js n=250000 -12.04 % *** 1.846156e-35
events\\ee-emit-multi-args.js n=2000000 10.96 % *** 1.395131e-29
events\\ee-emit.js n=2000000 2.63 % *** 5.275229e-05
events\\ee-listener-count-on-prototype.js n=50000000 8.65 % *** 3.501371e-33
events\\ee-listeners-many.js n=5000000 18.98 % *** 3.670456e-37
events\\ee-listeners.js n=5000000 5.45 % *** 8.625583e-10
events\\ee-once.js n=20000000 -31.56 % *** 1.767708e-43
V8 5.5.372.43 (Node.js 7.10.1) vs V8 6.2.217 (Node.js 9.0.0 2017-08-12 V8-canary)
improvement confidence p.value
events\\ee-add-remove.js n=250000 -9.71 % *** 7.300658e-24
events\\ee-emit-multi-args.js n=2000000 21.74 % *** 5.781329e-30
events\\ee-emit.js n=2000000 10.67 % *** 3.856524e-20
events\\ee-listener-count-on-prototype.js n=50000000 6.88 % *** 2.059200e-11
events\\ee-listeners-many.js n=5000000 14.08 % *** 3.452212e-45
events\\ee-listeners.js n=5000000 -1.82 % ** 1.769813e-03
events\\ee-once.js n=20000000 -26.43 % *** 5.119348e-73 |
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There doesn't seem to be much actionable here. The benchmarks should probably be updated to be more comprehensive but that's an issue across the board. The performance as per above is now nearly at par or better. |
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See: #12655 (comment)
I'm seeing a significant performance regression in the events benchmarks comparing master to 7.9.
/cc @mscdex @mcollina @nodejs/benchmarking
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