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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - XWayland [weston 1.6.0] takes all CPU and is very slow on eee-pc"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86815#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - XWayland [weston 1.6.0] takes all CPU and is very slow on eee-pc"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86815">bug 86815</a>
from <span class="vcard"><a class="email" href="mailto:mildred-bug.freedesktop@mildred.fr" title="Mildred Ki'Lya <mildred-bug.freedesktop@mildred.fr>"> <span class="fn">Mildred Ki'Lya</span></a>
</span></b>
<pre>perf data gathered over the few seconds of running xterm inside weston is
available here:
<a href="http://mildredkilya.nfshost.com/perf-20141208.data.tar.bz2">http://mildredkilya.nfshost.com/perf-20141208.data.tar.bz2</a>
The most time-consuming routines are:
Overhead Command Shared Object Symbol
28.77% Xwayland i915_dri.so [.] fetch_vector4
19.88% swapper [kernel.kallsyms] [k] intel_idle
15.43% Xwayland i915_dri.so [.] _mesa_execute_program
12.57% Xwayland i915_dri.so [.] store_vector4
Other routines are below 5%
I suspect some buffers are copied too many times around in the memory. Would
that be a problem in the intel driver of in Xwayland itself?</pre>
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