* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > On Mon, 17 Nov 2008, David Miller wrote: > > > > The scheduler has accounted for at least %10 of the tbench > > regressions at this point, what are you talking about? > > I'm wondering if you're not looking at totally different issues. > > For example, if I recall correctly, David had a big hit on the > hrtimers. And I wonder if perhaps Ingo's numbers are without > hrtimers or something? hrtimers should not be an issue anymore since this commit: | commit 0c4b83da58ec2e96ce9c44c211d6eac5f9dae478 | Author: Ingo Molnar <mingo@xxxxxxx> | Date: Mon Oct 20 14:27:43 2008 +0200 | | sched: disable the hrtick for now | | David Miller reported that hrtick update overhead has tripled the | wakeup overhead on Sparc64. | | That is too much - disable the HRTICK feature for now by default, | until a faster implementation is found. | | Reported-by: David Miller <davem@xxxxxxxxxxxxx> | Acked-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> | Signed-off-by: Ingo Molnar <mingo@xxxxxxx> Which was included in v2.6.28-rc1 already. Ingo -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
