From: Ingo Molnar Date: Tue, 18 Mar 2008 17:47:57 +0000 (+0100) Subject: sched: retune wake granularity X-Git-Tag: v2.6.25-rc7~102^2~1 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=74e3cd7f480ae1888b7cd196bf8125a1d3bfee05;p=linux-2.6-omap-h63xx.git sched: retune wake granularity reduce wake-up granularity for better interactivity. Signed-off-by: Ingo Molnar --- diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 87c9d3a2aaf..b85cac4b5e2 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -73,13 +73,13 @@ unsigned int sysctl_sched_batch_wakeup_granularity = 10000000UL; /* * SCHED_OTHER wake-up granularity. - * (default: 10 msec * (1 + ilog(ncpus)), units: nanoseconds) + * (default: 5 msec * (1 + ilog(ncpus)), units: nanoseconds) * * This option delays the preemption effects of decoupled workloads * and reduces their over-scheduling. Synchronous workloads will still * have immediate wakeup/sleep latencies. */ -unsigned int sysctl_sched_wakeup_granularity = 10000000UL; +unsigned int sysctl_sched_wakeup_granularity = 5000000UL; const_debug unsigned int sysctl_sched_migration_cost = 500000UL;