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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 --- - [IVB bisected] gnome-system-monitor perforamnce reduce by ~40%"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=59044">59044</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[IVB bisected] gnome-system-monitor perforamnce reduce by ~40%
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>cairo-bugs@cairographics.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

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

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

        <tr>
          <th>Reporter</th>
          <td>yex.tian@intel.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>1.12.8
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>xlib backend
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>cairo
          </td>
        </tr></table>
      <p>
        <div>
        <pre>System Environment:       
----------------------------------------------
Platform:IVB
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.

commit 5bc1b1f6aac108d9a3963352ad774bb4fcd69e28
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date:   Fri Aug 24 17:22:34 2012 +0100

   stroke: Make the incremental trapezoid stroker optionally available again

Performance:
-----------------------------------------------
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
../benchmark/gnome-system-monitor</pre>
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