On Wed, 12 Sep 2007 08:33:15 -0700 Jesse Barnes wrote: > 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...
Also tickless? (NO_HZ ?) I think I've seen some emails about tickless and keystrokes being needed to cause interrupts... but I'm not postive about it. but you said "any ideas" --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
