I can confirm that CPU usage drops significally when vsync is disabled. To be
specific:
Vsync enabled: When computer is completely idle compiz cpu usage is 1-2 %
When dragging the terminal window gently compiz cpu
usage is approx. 30-35 %
Vsync disabled: When computer is completely idle compiz cpu usage is 0 %
When dragging the terminal window gently compiz
cpu usage is approx. 15%
The bad thing is that disabling vsync causes other
significal problems such as not smooth window moving!
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https://bugs.launchpad.net/bugs/803943
Title:
compiz consuming a lot of cpu
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