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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - debugfs: expose fifo pipe underrun, overrun counts"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93865">93865</a>
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<th>Summary</th>
<td>debugfs: expose fifo pipe underrun, overrun counts
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>major
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>joe.konno@linux.intel.com
</td>
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<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>I believe a mechanism for counting pipe [under,over]runs would be useful during
debug.
If, during a particular workload, you consistently see X pipe underruns, and
then apply a patch and see "10% less" pipe underruns, you can say you've
progressed or regressed.
Propose adding a quick counter every vsync. I'll post an RFC patch today or
tomorrow.</pre>
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</p>
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