[Bug 17129] Slow to move translucent windows above a certain size with EXA (r300)

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17129





--- Comment #26 from Michel Dänzer <michel at tungstengraphics.com>  2008-09-02 00:28:25 PST ---
(In reply to comment #23)
> I've turned on all the proper debugging stuff. The results seem okay (when
> doing an operating like, say, scrolling firefox, the functions in opreport look
> appropriate -- bunch of stuff in pixman about modifying damage regions,
> compositing, etc.).

Userspace symbols tend be unproblematic, it's the kernel space symbols that are
dubious here. Also, I have a hard time making sense of oprofile callgraphs, so
even if vsscanf / dma_alloc_coherent are indeed the hotspots, I'm not sure
where they're called from. It might make sense to clarify this with kernel /
oprofile people and come back here if the results still point to the graphics
drivers.


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