[Konsole-devel] [Bug 251549] konsole is really slow with latest intel drivers

[Robert Knight]

https://bugs.kde.org/show_bug.cgi?id=251549


Robert Knight <robertknight at gmail.com> changed:

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--- Comment #2 from Robert Knight <robertknight gmail com>  2010-09-22 12:57:28 ---
> xfce terminal and urxvt and xterm work with no problem on same graphics stack.

Those programs are only using part of 'the same graphics stack' - that is, only
X.org and below.  Everything above X.org is different I believe.

> I used sysprof to profile it a bit, and it shows it spends much time in
> libkonsoleprivate, here's screenshot:

Thanks for looking into this.  Unfortunately I won't have the time to try
installing the latest Intel drivers to reproduce.  There a few more debugging
steps that would be helpful:

 * Run Konsole with '-graphicssystem raster' and compare with '-graphicssystem
native' to see whether this makes a difference.
 * If you have another machine available, it would be interesting to see how
your profile of a slow system compares with a profile of a system where it is
working better.
 * Lastly, callgrind/kcachegrind can be used to produce a more detailed profile
using:

valgrind --tool=callgrind konsole --nofork

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