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    <body><span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_VERIFIED  bz_closed"
   title="VERIFIED FIXED - [All Regression]igt/gem_fence_upload/thread-contention costs long time to execute sporadically"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80578">bug 80578</a>
        <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>RESOLVED
           </td>
           <td>VERIFIED
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_VERIFIED  bz_closed"
   title="VERIFIED FIXED - [All Regression]igt/gem_fence_upload/thread-contention costs long time to execute sporadically"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80578#c3">Comment # 3</a>
              on <a class="bz_bug_link 
          bz_status_VERIFIED  bz_closed"
   title="VERIFIED FIXED - [All Regression]igt/gem_fence_upload/thread-contention costs long time to execute sporadically"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80578">bug 80578</a>
              from <span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
</span></b>
        <pre>Verified on latest -nightly(c95053d599112ec3b8c27a632e3c1544558891a4)

root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time
./gem_fence_upload --run-subtest thread-contention
IGT-Version: 1.7-gde1e877 (x86_64) (Linux:
3.16.0-rc6_drm-intel-nightly_c95053_20140731+ x86_64)
Contended upload rate for 1 linear threads:     977.577MiB/s
Contended upload rate for 1 tiled threads:      1029.535MiB/s
Contended upload rate for 2 linear threads:     561.581MiB/s
Contended upload rate for 2 tiled threads:      548.894MiB/s
Contended upload rate for 4 linear threads:     415.698MiB/s
Contended upload rate for 4 tiled threads:      419.414MiB/s
Contended upload rate for 8 linear threads:     443.218MiB/s
Contended upload rate for 8 tiled threads:      429.411MiB/s
Contended upload rate for 16 linear threads:    398.678MiB/s
Contended upload rate for 16 tiled threads:     413.333MiB/s
Contended upload rate for 32 linear threads:    402.941MiB/s
Contended upload rate for 32 tiled threads:     384.500MiB/s
Contended upload rate for 64 linear threads:    379.671MiB/s
Contended upload rate for 64 tiled threads:      45.291MiB/s
Test assertion failure function thread_contention, file gem_fence_upload.c:321:
Failed assertion: linear[1] > 0.75 * linear[0]
Subtest thread-contention: FAIL

real    0m30.227s
user    0m1.788s
sys     1m3.923s


About the failure, which tracked by <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [SNB/IVB/HSW/BYT/BDW]igt/gem_fence_upload some subcases fail"
   href="show_bug.cgi?id=80079">bug 80079</a></pre>
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