[Webkit-unassigned] [Bug 146448] JavaScriptCore performance is very bad on Windows
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Jul 22 11:31:53 PDT 2015
https://bugs.webkit.org/show_bug.cgi?id=146448
--- Comment #55 from peavo at outlook.com ---
(In reply to comment #54)
> (In reply to comment #53)
> > Hmm, I noticed that std::mutex::lock() and std::mutex::unlock() spent about
> > 20% of the total time, and tried replacing the std::mutex in JSLock with
> > WTF::Mutex. WTF::Mutex::lock() and WTF::Mutex::unlock() then spent about 10%
> > of the total time, and the sprite count went from ~4400 to ~6000. So it
> > seems the MSVC implementation of std::mutex is not as fast as it could be.
>
> Again, are you testing with VS2015?
Not yet, I will test there as well :)
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