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List:       konsole-devel
Subject:    [Konsole-devel] [Bug 251549] konsole is really slow with latest
From:       Robert Knight <robertknight () gmail ! com>
Date:       2010-09-22 10:57:29
Message-ID: 20100922105729.D454D6546F () immanuel ! kde ! org
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https://bugs.kde.org/show_bug.cgi?id=251549


Robert Knight <robertknight@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |robertknight@gmail.com




--- 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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