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| author |   Ingo Molnar <mingo@elte.hu> | 2008-03-18 18:47:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-03-19 04:27:53 +0100 |
| commit | 74e3cd7f480ae1888b7cd196bf8125a1d3bfee05 (patch) | |
| tree | 8fb0ee01df92d145e975ce210e6aac2be5584062 /kernel | |
| parent | sched: wakeup-buddy tasks are cache-hot (diff) | |
| download | linux-dev-74e3cd7f480ae1888b7cd196bf8125a1d3bfee05.tar.xz linux-dev-74e3cd7f480ae1888b7cd196bf8125a1d3bfee05.zip | |
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.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 87c9d3a2aafa..b85cac4b5e25 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; |