[Webkit-unassigned] [Bug 104609] New: --profile differences between linux and anroid

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=104609

           Summary: --profile differences between linux and anroid
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pdr at google.com
                CC: eric at webkit.org


Due to using two profilers, our --profile output is different on each platform:

Android - SvgCubics
[ perf record: Captured and wrote 6.210 MB /data/perf.data (~271321 samples) ]
    59.49%  SignalSender  libm.so               [.] 0x1169c 
     8.66%  SignalSender  [kernel]              [k] 0xc004fa50
     7.10%  SignalSender  libDumpRenderTree.so  [.] WebCore::PathTraversalState::cubicBezierTo(WebCore::FloatPoint const&, WebCore::FloatPoint const&, WebCore::FloatPoint const&)
     5.80%  SignalSender  libDumpRenderTree.so  [.] WebCore::CubicBezier::split(WebCore::CubicBezier&, WebCore::CubicBezier&) const
     4.45%  SignalSender  libDumpRenderTree.so  [.] WebCore::distanceLine(WebCore::FloatPoint const&, WebCore::FloatPoint const&)
     2.57%  SignalSender  libc.so               [.] 0x1fce0 
     1.41%  SignalSender  [unknown]             [.] 0x6c12764c
     0.94%  SignalSender  libDumpRenderTree.so  [.] 0x181f90
     0.21%  SignalSender  libDumpRenderTree.so  [.] SkPath::RawIter::next(SkPoint*)
     0.20%  SignalSender  libDumpRenderTree.so  [.] WebCore::convertPathPoints(WebCore::FloatPoint*, SkPoint const*, int)

Linux - SvgCubics
Finished: 1.381556 s
      56  47.9%  47.9%       56  47.9% WebCore::PathTraversalState::cubicBezierTo
       3   2.6%  50.4%        3   2.6% 00007fba7a9055e2
       3   2.6%  53.0%        3   2.6% __access
       3   2.6%  55.6%        3   2.6% __libc_free
       2   1.7%  57.3%        2   1.7% 00007fba7a905417
       2   1.7%  59.0%        2   1.7% WebCore::Path::apply
       2   1.7%  60.7%        2   1.7% WebCore::SVGResourcesCache::cachedResourcesForRenderObject
       2   1.7%  62.4%        2   1.7% WebCore::StyleResolver::collectMatchingRules
       2   1.7%  64.1%        2   1.7% __libc_malloc
       2   1.7%  65.8%        2   1.7% tcmalloc::FL_Push


It is possible this is due to the platform, but

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