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Old 06-24-07, 11:58 AM   #1
kriko's Avatar
Join Date: Aug 2005
Location: Europe, Slovenia, Koper
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Default Compiz performance under load

When using compiz I get bad performance under load. To be precise - mouse is jerky when a program demands more cpu power (not only mouse, moving windows, resizing get also jerky). As I remember this never happened before on same hardware configuration, but 32-bit kernel (now I have 64-bit).
The problem is always visible, e.g. when launching koqueror, when using smart (installing new programs). Mouse gets really jerky.
When moving windows around (slowly) or slowly rotating cube, I can see CPU usage going to high levels (90% +), process causing this was Xorg.

Normally in 2d mode none of this problem is seen. Curently I'm launching compiz with:
#export __GL_YIELD="NOTHING"; compiz --replace --loose-binding --indirect-rendering ccp &
I read many performance optimization tweaks, did xorg.conf tweaks... don't know what else to do anymore.
Can you please help me to kill this problem. I started to think switching back to 32 bit, where compiz was really smooth under heavy load.... but better solution is to pinpoint the real problem, so I'm asking you - graphics experts.

EDIT: here I found someone describing my problem too:

Last edited by kriko; 05-31-11 at 01:34 PM.
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Old 07-19-07, 06:52 AM   #2
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Default Re: Compiz performance under load

The gl yield nothing option improved it for me, but definitely didn't completely solve it. Thanks for the tip.

I'm running a Athlon 64 X2 4600 and a geforce 8800gtx. I guess I need to upgrade for smooth gui effects :P
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