[Bug 63825] New: [bisect IVB] cairo-trace firefox-planet-gnome reduced by 24%

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Apr 22 23:59:51 PDT 2013


https://bugs.freedesktop.org/show_bug.cgi?id=63825

          Priority: medium
            Bug ID: 63825
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [bisect IVB] cairo-trace firefox-planet-gnome reduced
                    by 24%
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: bo.c.li at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

System Environment:       
--------------------------
Platform:IVB
Libdrm:(master)libdrm-2.4.43-8-ge5d8a9c1d6375feb74feb52f419a025f1abf94d1
Mesa:  (master)34bec4a25165bf5d3f957e26eda7624d325b161c
Xserver:(master)xorg-server-1.14.0-53-g6ca03b9161d33b1d2b55a3a1a913cf88deb2343
Cairo:(master)498421bec90f68f3d7219b145860a71fd39f0c64
Kernel:    (drm-intel-nightly) 46d094678ca1c7b13c44de309b95938744bcea6f

Bug detailed description:
-----------------------------
Cairo-trace firefox-planet-gnome reduced by 24% on IVB.  which caused by
kernel.
midori-zoomed, firefox-woodtv and swfdec-fill-rate-4xaa also have some bug.

First bad commit bisected is as following:
commit: (drm-intel-fixes) 25ff1195f8a0b3724541ae7bbe331b4296de9c06
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Apr 4 21:31:03 2013 +0100
drm/i915: Workaround incoherence between fences and LLC across multiple CPUs

Reproduce steps:
----------------------------
1, xinit&
2, CAIRO_TEST_TARGET=xlib ./cairo-perf-trace  firefox-planet-gnome.trace

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