[cairo-bugs] [Bug 28067] New: Performance regression in synthetic micro-benchmark

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue May 11 08:46:36 PDT 2010


https://bugs.freedesktop.org/show_bug.cgi?id=28067

           Summary: Performance regression in synthetic micro-benchmark
           Product: cairo
           Version: 1.9.6
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: image backend
        AssignedTo: cworth at cworth.org
        ReportedBy: linuxhippy at gmail.com
         QAContact: cairo-bugs at cairographics.org


Hi,

Compared to cairo-1.8 I get quite a serious performance regression running the
stupid micro-benchmark attached.

time ./cbench_cairo1_10 
real    0m34.819s
user    0m32.556s
sys     0m1.567s

time ./cbench_cairo1_8
real    0m18.965s
user    0m17.765s
sys     0m0.938s

Guess its caused by the scan rasterizer.

- Clemens

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