xserver-xorg-video-radeon 6.14.4: X has constant 10 % CPU usage

[Chris Wilson]

On Tue, 11 Sep 2012 15:07:41 +0200, Paul Menzel <paulepanter at users.sourceforge.net> wrote:
> Am Dienstag, den 11.09.2012, 14:55 +0200 schrieb Michel Dänzer:
> > I'd focus on profiling the X server, making sure the profiles show
> > symbols, ideally with call graphs. sysprof or perf might work better for
> > this than oprofile.
> 
> Thanks. Lucky me, that this is not needed now and I can postpone how to
> figure out how to start X that way under Debian with GDM.

For future reference, sysprof and perf can be used to perform system
wide profiling - that is you can launch them after starting the task you
need to profile. For sysprof this is its default mode, and for perf you
need 'perf record -a'

A quick 'sudo perf top' is always a useful first step. For best results,
make sure you have debugging symbols and frame pointers.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre