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* Lossy interrupts on x86_64
@ 2007-09-12 15:33 Jesse Barnes
  2007-09-12 16:01 ` Randy Dunlap
  2007-09-13 13:40 ` Chris Snook
  0 siblings, 2 replies; 13+ messages in thread
From: Jesse Barnes @ 2007-09-12 15:33 UTC (permalink / raw)
  To: Thomas Gleixner, linux-kernel

I just narrowed down a weird problem where I was losing more than 50% of 
my vblank interrupts to what seems to be the hires timers patch.  Stock 
2.6.23-rc5 works fine, but the latest (171) kernel from rawhide drops 
most of my interrupts unless I also have another interrupt source 
running (e.g. if I hold down a key or move the mouse I get the expected 
number of vblank interrupts, otherwise I get between 3 and 30 instead 
of the expected 60 per second).

Any ideas?  It seems like it might be bad APIC programming, but I 
haven't gone through those mods to look for suspects...

Thanks,
Jesse

^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2007-09-21  0:41 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-09-12 15:33 Lossy interrupts on x86_64 Jesse Barnes
2007-09-12 16:01 ` Randy Dunlap
2007-09-12 16:29   ` Jesse Barnes
2007-09-12 17:06     ` Thomas Gleixner
2007-09-17 19:13       ` Jesse Barnes
2007-09-17 19:18         ` Thomas Gleixner
2007-09-17 19:40           ` Jesse Barnes
2007-09-20 19:22           ` Jesse Barnes
2007-09-20 19:50             ` Thomas Gleixner
2007-09-21  0:40               ` Jesse Barnes
2007-09-14 17:35     ` Chuck Ebbert
2007-09-13 13:40 ` Chris Snook
2007-09-17 19:24   ` Jesse Barnes

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