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<body><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> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - KDE Konsole very slow scrolling with TearFree and QT graphics system native"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77436">bug 77436</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEEDINFO
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - KDE Konsole very slow scrolling with TearFree and QT graphics system native"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77436#c143">Comment # 143</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - KDE Konsole very slow scrolling with TearFree and QT graphics system native"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77436">bug 77436</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>It's not the only pathological renderer! I still think something is subpar and
anomalous about the behavior on your machine, but this bug has gone on long
enough...
For reference, can you please run
x11perf -aa10text -aa24text -rgb10text -rgb24text
under the various compositor guises (TearFree, vsync, vsync+TearFree, etc).
For reference on my baby ivb, with tear-free enabled and bare X I get:
Sync time adjustment is 0.0324 msecs.
200000000 trep @ 0.0001 msec (7920000.0/sec): Char in 80-char aa line
(Charter 10)
112000000 trep @ 0.0003 msec (3850000.0/sec): Char in 30-char aa line
(Charter 24)
120000000 trep @ 0.0003 msec (3280000.0/sec): Char in 80-char rgb line
(Charter 10)
32000000 trep @ 0.0011 msec (871000.0/sec): Char in 30-char rgb line (Charter
24)
and without:
Sync time adjustment is 0.0328 msecs.
280000000 trep @ 0.0001 msec (10200000.0/sec): Char in 80-char aa line
(Charter 10)
112000000 trep @ 0.0002 msec (4130000.0/sec): Char in 30-char aa line
(Charter 24)
120000000 trep @ 0.0003 msec (3400000.0/sec): Char in 80-char rgb line
(Charter 10)
32000000 trep @ 0.0011 msec (890000.0/sec): Char in 30-char rgb line (Charter
24)</pre>
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