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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [sna ivb] rendering is getting painfully slow sometimes"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65115#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [sna ivb] rendering is getting painfully slow sometimes"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65115">bug 65115</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Tricky. It sounds like GPU latency with vsync enabled. A couple of things to
watch would be perf top and intel_gpu_top, comparing and contrasting the
stutters. Keeping an eye on /sys/kernel/debug/dri/0/i915_gem_objects for
another leak would be very useful as well. There is a bug whereby creating and
destroying DRI2 drawables will leak XIDs leading to slowdown over time - that
will show up as an increase in time spent in X walking linear lists.</pre>
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