http://bugs.freedesktop.org/show_bug.cgi?id=7770
--- Comment #42 from Émeric Maschino <emeric.masch...@gmail.com> 2009-03-06
13:39:23 PST ---
Hello Alex,
(In reply to comment #41)
> I've gone ahead and added an AGP quirk for your system:
> a7f465f73363fce409870f62173d518b1bc02ae6
Thank you, but could you remove this AGP quirk, please?
Here are the reasons.
"Downgrading" to AGP 2x or even AGP 1x only makes the problem appears later. I
mean, rather than locking the system within seconds, it will take several
minutes, but the system will eventually lock. Well, it doesn't really lock in
fact, I was mistaken in my previous post. I had some free time to perform tests
since then.
At AGP 2x/1x, simple GL-applications (glxgears, GL screensavers and even Quake
2) "usually" run without a problem. I say "usually", because if you enable the
shadows in Quake 2 (gl_shadows variable set to 1 in config.cfg), you will
experience the issue that I will now describe.
Independently of AGP speed, serious GL-applications like the SPECviewperf 7.1.1
suite (need to be recompiled for Linux ia64), completely flood the system
within seconds. It's not hard locked as I thought initially. Indeed, I can ssh
to it and the top command reveals that the Xorg process eats all the CPU (and
sometimes more with a whooping 320% CPU utilization peak!). At this stage, I
can't restart the X server locally or kill it remotely and a reboot is welcome.
Is there something I can try to help figure out what is the cause of this
outrageous CPU utilization?
Thanks,
Émeric
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