[Webkit-unassigned] [Bug 156147] [JSC] implement async functions proposal
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri May 27 14:48:19 PDT 2016
https://bugs.webkit.org/show_bug.cgi?id=156147
--- Comment #97 from Caitlin Potter (:caitp) <caitp at igalia.com> ---
The dromaeo results for the latest patch are about 3-4% regressions for each test. With the branch prediction adjustment, there's a 5-10% improvement (If there's a command to dump results of run-perf-tests as text, I'll provide all the numbers).
With the command `run-jsc-benchmarks --outer 10 --octane --benchmark "closure|jquery" baseline:~/git/WebKit2/WebKitBuild/Release/DumpRenderTree asyncawait:~/git/WebKit/WebKitBuild/Release/DumpRenderTree`, results are:
baseline asyncawait
closure 0.30989+-0.00551 0.30340+-0.00295 might be 1.0214x faster
jquery 3.65550+-0.01427 ! 3.78112+-0.03262 ! definitely 1.0344x slower
<geometric> 1.06425+-0.01004 ? 1.07103+-0.00613 ? might be 1.0064x slower
---
The jquery results might look a little worse than previously described, but the fact that Dromaeo consistently does so much better with the branch predictions added goes a long way in my opinion.
Ensuring that `m_runtimeFlags` is packed efficiently and accessed in cache more often will probably see some improvement, but hard to guess how much
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