[Bug 27284] latest r6xx+ commits kill performance on my system

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=27284





--- Comment #27 from Andy Furniss <lists at andyfurniss.entadsl.com>  2010-03-27 13:08:58 PST ---
(In reply to comment #21)

> The error when perf is trashed is -
> 
> space check failed in flush
> 
> oprofile (not that I totally trust it) shows most time in -
> 
> 1116680  80.3342  libpixman-1.so.0.17.3    libpixman-1.so.0.17.3   
> pixman_blt_mmx
> 
> It happens with unpatched head and the first patch.
> 
> Running with the second patch alone or + the first patch fixes it.

I was too hasty in saying the second patch fixes it - I can still trigger, it
just takes a bit longer.

With patch2 I don't see the "space check failed in flush" errors when it
happens.

The pixman oprofile above was running glxgears after triggering and closing
seamonkey.

If I take a profile while just moving an xterm around (which is only redrawing
at 2fps) then libc memcpy is the cpu hog and libpixman barely shows.


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