[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 #20 from Joel Feiner <jafeiner at gmail.com>  2008-08-31 08:43:15 PST ---
(In reply to comment #19)
> radeon_freelist_get at the top of the profile indicates the GPU is the
> bottleneck, which is odd... Does moving the window involve any kind of not
> directly related animation or other constant screen updates?
> 
Using plain xcompmgr so there are no animations or anything happening.

> I'm also not sure why vt8237_force_enable_hpet is up there; do you have a VIA
> 8235/7 chipset?
> 
I do not have a VIA chipset.  I did disable HPET to see if that would go away,
but then something else just popped up high in the kernel list.  Once again, I
suspect my opreport stuff is incorrect.

What's more disconcerting to me is that I ran this test again last night and
the performance was different.  It was jerky instead of laggy and opreport
showed completely different results.  Now this morning it is back to laggy.  I
haven't upgraded anything related to X in over a week, certainly not between
last night and, say, the night before (or this morning) when it was still
showing the behavior triggering this bug in the first place.

For what it's worth, I've attached this morning opreport report.

Do you think it would be useful to try to do this over a less asynchronous
communications channel like IRC or something like that?  Either that or just
drop it since I can't get consistent results and don't feel entirely sure that
I'm even measuring things correctly.  I don't want to waste people's time.


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