X using 95% CPU (intel, latest git)

Carl Worth cworth at cworth.org
Thu Aug 13 15:31:38 PDT 2009

On Thu, Aug 13, 2009 at 06:01:34PM -0400, Andy Neitzke wrote:
> My problem is that frequently, even when the system should be idle, KDE's CPU 
> monitor applet shows that one of the two processors is fully loaded.  When 
> this happens, "top" blames the X process, showing it using around 95% CPU.  
> My question is:  how can I diagnose this problem more precisely?  (Is it 
> a symptom of an Xorg bug, or could it that some part of KDE is issuing an 
> enormous number of requests to the X server for some reason?)

Could be either. The next step would be to use a profiler, (such as
sysprof or oprofile), to find out what functions are eating up all of
the CPU.

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