[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 #21 from Andy Furniss <lists at andyfurniss.entadsl.com>  2010-03-25 17:47:28 PST ---
(In reply to comment #18)
> (In reply to comment #16)
> 
> > Is there any errors in xorg.log or dmesg when the slow down happens?
> 
> Nothing in dmesg - I briefly saw a different line scroll off when I quit X but
> my fbcon scroll back seems to be limited to a couple of lines so I can't say
> what it said. Now I've tried the other patch I'll try and recreate it and
> redirect to a file this time.
> 

After waiting ages and accumulating 22k reloc errors I decided to retrace my
steps and so now I've managed to find a way to trigger this - just use flash -
something which doesn't usually happen as I run flashblock. Unblocking a flash
totally trashes perf even after seamonkey is closed

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.


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