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authorIngo Molnar <mingo@elte.hu>2008-03-18 18:47:57 +0100
committerIngo Molnar <mingo@elte.hu>2008-03-19 04:27:53 +0100
commit74e3cd7f480ae1888b7cd196bf8125a1d3bfee05 (patch)
tree8fb0ee01df92d145e975ce210e6aac2be5584062 /kernel
parentf540a6080a092e2ab69fd146c308022db7347b0a (diff)
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op-kernel-dev-74e3cd7f480ae1888b7cd196bf8125a1d3bfee05.tar.gz
sched: retune wake granularity
reduce wake-up granularity for better interactivity. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched_fair.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 87c9d3a..b85cac4 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;
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