Message ID | 20081025.205501.193695937.davem@davemloft.net |
---|---|
State | Not Applicable, archived |
Delegated to: | David Miller |
Headers | show |
On Sunday, 26 of October 2008, David Miller wrote: > From: "Rafael J. Wysocki" <rjw@sisk.pl> > Date: Sat, 25 Oct 2008 13:13:20 +0200 > > > Could you please give me a pointer to the commit disabling the hrtimer feature? > > Here it is: Thanks a lot! > commit 0c4b83da58ec2e96ce9c44c211d6eac5f9dae478 > Author: Ingo Molnar <mingo@elte.hu> > 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@davemloft.net> > Acked-by: Peter Zijlstra <peterz@infradead.org> > Signed-off-by: Ingo Molnar <mingo@elte.hu> > > diff --git a/kernel/sched_features.h b/kernel/sched_features.h > index 7c9e8f4..fda0162 100644 > --- a/kernel/sched_features.h > +++ b/kernel/sched_features.h > @@ -5,7 +5,7 @@ SCHED_FEAT(START_DEBIT, 1) > SCHED_FEAT(AFFINE_WAKEUPS, 1) > SCHED_FEAT(CACHE_HOT_BUDDY, 1) > SCHED_FEAT(SYNC_WAKEUPS, 1) > -SCHED_FEAT(HRTICK, 1) > +SCHED_FEAT(HRTICK, 0) > SCHED_FEAT(DOUBLE_TICK, 0) > SCHED_FEAT(ASYM_GRAN, 1) > SCHED_FEAT(LB_BIAS, 1) Rafael -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/kernel/sched_features.h b/kernel/sched_features.h index 7c9e8f4..fda0162 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h @@ -5,7 +5,7 @@ SCHED_FEAT(START_DEBIT, 1) SCHED_FEAT(AFFINE_WAKEUPS, 1) SCHED_FEAT(CACHE_HOT_BUDDY, 1) SCHED_FEAT(SYNC_WAKEUPS, 1) -SCHED_FEAT(HRTICK, 1) +SCHED_FEAT(HRTICK, 0) SCHED_FEAT(DOUBLE_TICK, 0) SCHED_FEAT(ASYM_GRAN, 1) SCHED_FEAT(LB_BIAS, 1)