[cairo-bugs] [Bug 59044] New: [IVB bisected] gnome-system-monitor perforamnce reduce by ~40%

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jan 4 23:24:12 PST 2013


          Priority: medium
            Bug ID: 59044
          Assignee: chris at chris-wilson.co.uk
           Summary: [IVB bisected] gnome-system-monitor perforamnce reduce
                    by ~40%
        QA Contact: cairo-bugs at cairographics.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: yex.tian at intel.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: 1.12.8
         Component: xlib backend
           Product: cairo

System Environment:       
Mesa:  (9.0)0ac90296a092f846647812318913b0e492775f31
Cairo: (master)9dde964553f74ccbc037b13ca83d0abb46adb194
Kernel:(drm-intel-fixes) da494d7ca5e0a1afca3480826b5060e15c951e80

Bug detailed description:
Cairo (benchmark/full)gnome-system-monitor performance reduced by ~40% on IVB
It's cairo regression. By bisected, show that 5bc1b1f6a is the first bad

commit 5bc1b1f6aac108d9a3963352ad774bb4fcd69e28
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Aug 24 17:22:34 2012 +0100

   stroke: Make the incremental trapezoid stroker optionally available again

74941f8 is 5bc1b1 parents commit.
                                74941f8   5bc1b1 
(benchmark)gnome-system-monitor  0.97      1.62

Reproduce steps:
1, xinit&
2, vblank_mode=0 CAIRO_TEST_TARGET=xlib ./cairo-perf-trace

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