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List: kwin
Subject: [Bug 202079] New: kwin extremely slow when resizing some windows
From: Martin Koller <kollix () aon ! at>
Date: 2009-07-31 12:03:15
Message-ID: bug-202079-4790 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=202079
Summary: kwin extremely slow when resizing some windows without
compositing
Product: kwin
Version: unspecified
Platform: SuSE RPMs
OS/Version: Linux
Status: NEW
Severity: normal
Priority: NOR
Component: general
AssignedTo: kwin@kde.org
ReportedBy: kollix@aon.at
Version: (using KDE 4.2.98)
OS: Linux
Installed from: SuSE RPMs
I'm using openSuse 11.1, IBM Thinkpad T43 Laptop with ATI
GPU and fglrx driver.
Desktop effects are DISABLED.
kwin from KDE3 works smoothly when resizing windows.
The same applications which were resizing smoothly with kwin/KDE3 are suddenly
resizing very slowly with kwin/KDE4.
So it is definitely _not_ an issue with Xorg or the driver.
However, I see that the problem occurs only with applications which define a
hint for the wm to resize in steps and not in pixels (hope my wording is
clear).
E.g.: the slow resize happens with konsole or gvim but does not with konqueror
or kolourpaint(KDE3)
Interesting is also the fact that during my resize tests the CPU usage did not
increase much (~12%). So for me it seems not to be a problem of the executing
of code but more a problem of some timeout/delay before resizing is done.
Move, minimize, maximize, restore is fast as usual.
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