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      <base href="https://bugs.freedesktop.org/" />
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        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [bisect IVB] cairo-trace firefox-planet-gnome reduced by 24%"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=63825">63825</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[bisect IVB] cairo-trace firefox-planet-gnome reduced by 24%
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>bo.c.li@intel.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
      <p>
        <div>
        <pre>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 <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
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</pre>
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