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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HAWAII] Running some programs, when HW acceleration is on, causes X to spike in CPU usage → unresponsive desktop"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=82055">82055</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[HAWAII] Running some programs, when HW acceleration is on, causes X to spike in CPU usage → unresponsive desktop
          </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>kai@dev.carbon-project.org
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>git
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/Gallium/radeonsi
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When running certain programs (eg. MediathekView) or watching recorded
broadcasts on Twitch, X starts going up in CPU usage and the desktop becomes
unresponsive, until you kill the stream or the program has finished its draw
operations (can take several seconds). Interestingly enough, YouTube videos are
not affected. In both cases I had HW video acceleration on (through settings in
/etc/adobe/mms.conf), without HW acceleration the plugin is just consuming
ridiculous amounts of CPU cycles.
The problem with Twitch is independent off chosen video quality.

My desktop environment is KDE 4.13.3 with desktop effects enabled (compositing
type=OpenGL 3.1, render target=native), disabling them has no effect on this
issue.

I haven't seen these issues with my previous HD7850 (also using Glamor),
therefore I think this is separate to <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - radeonsi with glamor has very poor performance with primitives drawing"
   href="show_bug.cgi?id=68524">bug 68524</a>.

My stack is (base: Debian Testing):
GPU: Hawaii PRO [Radeon R9 290] (ChipID = 0x67b1)
Linux: Git:~agdf5/linux:drm-next-3.17-rebased-on-fixes:fa053e7263 (calls itself
3.16-rc6) + <span class=""><a href="attachment.cgi?id=93015" name="attach_93015" title="possible fix">attachment 93015</a> <a href="attachment.cgi?id=93015&action=edit" title="possible fix">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=82055&attachment=93015'>[review]</a> [review]
libdrm: Git:master/libdrm-2.4.56
LLVM: SVN:trunk/r214546 (3.6 snapshot)
libclc: Git:master/5b48f170c8
Mesa: Git:master/e41cc45361
DDX: Git:master/4b5060f357 + Patch from
<a href="http://lists.x.org/archives/xorg-driver-ati/2014-July/026517.html">http://lists.x.org/archives/xorg-driver-ati/2014-July/026517.html</a>
X: 2:1.16.0-2 (1.16.0)

Let me know, if you need further information.</pre>
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