[lkml]   [2006]   [Nov]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: CONFIG_NO_HZ: missed ticks, stall (keyb IRQ required) [2.6.18-rc4-mm1]
On Tue, 2006-11-07 at 09:07 +0100, Ingo Molnar wrote:
> * Len Brown <> wrote:
> > So given that C3 on every known system that has shipped to date breaks
> > the LAPIC timer (and apparently this applies to C2 on these AMD
> > boxes), dynticks needs a solid story for co-existing with C3.
> check out 2.6.19-rc4-mm2: it detects this breakage and works it around
> by using the PIT as a clock-events source. That did the trick on my
> laptop which has this problem too. I agree with you that degrading the
> powersaving mode is not an option.

Andreas tested with the latest -mm1-hrt-dyntick patches, so he has all
the checks already. The thing which worries me here is, that we detect
the breakage and use the fallback path already, but it still has this
weird effect on that system, while others just work fine. I'm cooking a
more brute force fallback right now.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-11-07 09:25    [W:0.350 / U:0.584 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site