Bug 163783 - Kwin takes much ressource of my CPU (20%) if I active desktop effect and put in "advanced options" vsync and direct rendering on together
Summary: Kwin takes much ressource of my CPU (20%) if I active desktop effect and put ...
Status: RESOLVED DUPLICATE of bug 154270
Alias: None
Product: kwin
Classification: Plasma
Component: compositing (show other bugs)
Version: unspecified
Platform: Compiled Sources Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-06-11 13:41 UTC by Mathieu Tournier
Modified: 2008-06-11 16:14 UTC (History)
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Description Mathieu Tournier 2008-06-11 13:41:46 UTC 
Version:            (using Devel)
Installed from:    Compiled sources
OS:                Linux

Kwin takes much ressource of my CPU (20%) if I active desktop effect and put in "advanced options" vsync and direct rendering on together.
Comment 1 Mathieu Tournier 2008-06-11 13:50:00 UTC 
Note: I have a Nvidia fx 5200
NVIDIA Driver Version: 169.12
Xorg :11.0
Comment 2 lucas 2008-06-11 13:56:19 UTC 
What's your CPU?
Does the CPU usage change when disabling vsync or effects completely?
Comment 3 Mathieu Tournier 2008-06-11 15:58:40 UTC 
My CPU is a Intel Pentium 4 HT 3.0GHz
My packages : Kde 4.1 beta for kubuntu
If I disable desktop effect, the CPU usage is normal.
Moreover, if I active desktop effect without "vsync" and "direct rendering" actived together, all is good.
But if I active "vsync" AND "direct rendering", kwin takes 20% of my CPU.
Comment 4 lucas 2008-06-11 16:14:16 UTC 

*** This bug has been marked as a duplicate of 154270 ***