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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - We've regressed octane codeload by 8% since the revision before arrow functions"
href="https://bugs.webkit.org/show_bug.cgi?id=156252#c14">Comment # 14</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - We've regressed octane codeload by 8% since the revision before arrow functions"
href="https://bugs.webkit.org/show_bug.cgi?id=156252">bug 156252</a>
from <span class="vcard"><a class="email" href="mailto:gskachkov@gmail.com" title="GSkachkov <gskachkov@gmail.com>"> <span class="fn">GSkachkov</span></a>
</span></b>
<pre>There are some result of performance tests.
Important to receive this result was used modified code-load.js file, where it possible were replace common function to arrow function in following way:
unction () replace by (a0,b0,c0,d0,e0,f0,g0,h0,j0,k0)=>{
function (a) replace by (a,b1,c1,d1,e1,f1,g1,h1,j1,k1)=>{
function (a,b) replace by (a,b,c2,d2,e2,f2,g2,h2,j2,k2)=>{
--- Not sure if it is cheating
MacBook-Pro-Skachkov-2:Webkit2 Developer$ Tools/Scripts/run-jsc-benchmarks before:/Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc after:/Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc --octane --benchmark="jquery|closure" --outer 10
Warning: could not identify checkout location for before
Warning: could not identify checkout location for after
92/92
Benchmark report for Octane on MacBook-Pro-Skachkov-2 (MacBookPro8,1).
VMs tested:
"before" at /Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc
"after" at /Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc
Collected 10 samples per benchmark/VM, with 10 VM invocations per benchmark. Emitted a call to
gc() between sample measurements. Used 1 benchmark iteration per VM invocation for warm-up. Used
the jsc-specific preciseTime() function to get microsecond-level timing. Reporting benchmark
execution times with 95% confidence intervals in milliseconds.
before after
closure 1.04113+-0.01106 ^ 0.99330+-0.01229 ^ definitely 1.0482x faster
jquery 12.17617+-0.15386 11.96693+-0.10068 might be 1.0175x faster
<geometric> 3.56038+-0.03687 ^ 3.44761+-0.03026 ^ definitely 1.0327x faster
MacBook-Pro-Skachkov-2:Webkit2 Developer$ Tools/Scripts/run-jsc-benchmarks before:/Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc after:/Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc --octane --benchmark="jquery|closure" --outer 10
Warning: could not identify checkout location for before
Warning: could not identify checkout location for after
92/92
Benchmark report for Octane on MacBook-Pro-Skachkov-2 (MacBookPro8,1).
VMs tested:
"before" at /Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc
"after" at /Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc
Collected 10 samples per benchmark/VM, with 10 VM invocations per benchmark. Emitted a call to
gc() between sample measurements. Used 1 benchmark iteration per VM invocation for warm-up. Used
the jsc-specific preciseTime() function to get microsecond-level timing. Reporting benchmark
execution times with 95% confidence intervals in milliseconds.
before after
closure 1.05545+-0.00767 ^ 0.98806+-0.01082 ^ definitely 1.0682x faster
jquery 12.21856+-0.13663 12.02093+-0.07467 might be 1.0164x faster
<geometric> 3.59098+-0.02558 ^ 3.44619+-0.01687 ^ definitely 1.0420x faster
MacBook-Pro-Skachkov-2:Webkit2 Developer$ Tools/Scripts/run-jsc-benchmarks before:/Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc after:/Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc --octane --benchmark="jquery|closure" --outer 10
Warning: could not identify checkout location for before
Warning: could not identify checkout location for after
92/92
Benchmark report for Octane on MacBook-Pro-Skachkov-2 (MacBookPro8,1).
VMs tested:
"before" at /Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc
"after" at /Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc
Collected 10 samples per benchmark/VM, with 10 VM invocations per benchmark. Emitted a call to
gc() between sample measurements. Used 1 benchmark iteration per VM invocation for warm-up. Used
the jsc-specific preciseTime() function to get microsecond-level timing. Reporting benchmark
execution times with 95% confidence intervals in milliseconds.
before after
closure 1.05095+-0.00968 ^ 0.98810+-0.01133 ^ definitely 1.0636x faster
jquery 12.31999+-0.13188 ^ 12.01412+-0.07400 ^ definitely 1.0255x faster
<geometric> 3.59817+-0.02872 ^ 3.44529+-0.01942 ^ definitely 1.0444x faster
MacBook-Pro-Skachkov-2:Webkit2 Developer$ Tools/Scripts/run-jsc-benchmarks before:/Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc after:/Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc --octane --benchmark="jquery|closure" --outer 10
Warning: could not identify checkout location for before
Warning: could not identify checkout location for after
92/92
Benchmark report for Octane on MacBook-Pro-Skachkov-2 (MacBookPro8,1).
VMs tested:
"before" at /Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc
"after" at /Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc
Collected 10 samples per benchmark/VM, with 10 VM invocations per benchmark. Emitted a call to
gc() between sample measurements. Used 1 benchmark iteration per VM invocation for warm-up. Used
the jsc-specific preciseTime() function to get microsecond-level timing. Reporting benchmark
execution times with 95% confidence intervals in milliseconds.
before after
closure 1.05823+-0.01207 ^ 0.99516+-0.01640 ^ definitely 1.0634x faster
jquery 12.26944+-0.11244 12.07709+-0.11698 might be 1.0159x faster
<geometric> 3.60322+-0.03151 ^ 3.46645+-0.02885 ^ definitely 1.0395x faster
MacBook-Pro-Skachkov-2:Webkit2 Developer$ Tools/Scripts/run-jsc-benchmarks before:/Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc after:/Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc --octane --benchmark="jquery|closure" --outer 10
Warning: could not identify checkout location for before
Warning: could not identify checkout location for after
92/92
Benchmark report for Octane on MacBook-Pro-Skachkov-2 (MacBookPro8,1).
VMs tested:
"before" at /Users/Developer/Projects/Webkit2/WebKitBuild/before_patch/Release/jsc
"after" at /Users/Developer/Projects/Webkit2/WebKitBuild/es6_functions/Release/jsc
Collected 10 samples per benchmark/VM, with 10 VM invocations per benchmark. Emitted a call to
gc() between sample measurements. Used 1 benchmark iteration per VM invocation for warm-up. Used
the jsc-specific preciseTime() function to get microsecond-level timing. Reporting benchmark
execution times with 95% confidence intervals in milliseconds.
before after
closure 1.05397+-0.01681 ^ 0.98210+-0.00726 ^ definitely 1.0732x faster
jquery 12.44263+-0.21901 ^ 12.03256+-0.04026 ^ definitely 1.0341x faster
<geometric> 3.62080+-0.03777 ^ 3.43754+-0.01005 ^ definitely 1.0533x faster</pre>
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