Commit 0c4b83da authored Oct 20, 2008 by Ingo Molnar

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>

parent f9c0b095

kernel/sched_features.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)