[Webkit-unassigned] [Bug 70032] New: Enable ParallelJobs by default

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Oct 13 09:37:14 PDT 2011


           Summary: Enable ParallelJobs by default
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Template Framework
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kbalazs at webkit.org
                CC: zimmermann at kde.org, loki at webkit.org,
                    zherczeg at webkit.org, timothy_horton at apple.com
        Depends on: 68540

According to measurements ParallelJobs is a significant speedup for SVG - it's only user currently - with all backends (libdispatch, openmp, generic) so I think nothing should stop us using it. My measurements was made with the svg tests of the Methanol benchmark suite (https://gitorious.org/methanol). I measured a 60% speedup on a 6 core MacPro5,1 (libdispatch backend), and a 40% win on my 4 core i5 machine with the generic and also with the openmp backend (these were almost identical). (The generic backend needs the patch in #68450 to achieve this.)

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