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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 - X slow rendering performance with i915 driver"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108706">108706</a>
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<th>Summary</th>
<td>X slow rendering performance with i915 driver
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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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
</td>
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
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<th>Reporter</th>
<td>undying.k@gmail.com
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=142426" name="attach_142426" title="X process perf flamegraph">attachment 142426</a> <a href="attachment.cgi?id=142426&action=edit" title="X process perf flamegraph">[details]</a></span>
X process perf flamegraph
Hello!
I've noticed that after reboot there is a high cpu usage and slow rendering
performance.
Using top I've found that X process uses 10-15% CPU.
intel_gpu_top shows 90-100% GPU usage but on screen nothing happens.
After 10-15 minutes this load may disappear and performance returns to normal.
I'm using Dell XPS 13 with integrated Intel HD Graphics 620.
Software versions:
kernel: 4.19.0-gentoo
xorg-server: 1.20.3
xorg-proto: 2018.4
kde plasma: 5.51.0
kde plasma-desktop: 5.14.3
In attachments I'll provide reports of perf tool for X process and i915 events.</pre>
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