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sched: retune wake granularity 

reduce wake-up granularity for better interactivity.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-03-18 18:47:57 +01:00
parent f540a6080a
commit 74e3cd7f48
1 changed files with 2 additions and 2 deletions
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4
kernel/sched_fair.c
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@ -73,13 +73,13 @@ unsigned int sysctl_sched_batch_wakeup_granularity = 10000000UL;
/* /*
* SCHED_OTHER wake-up granularity. * 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 * This option delays the preemption effects of decoupled workloads
* and reduces their over-scheduling. Synchronous workloads will still * and reduces their over-scheduling. Synchronous workloads will still
* have immediate wakeup/sleep latencies. * 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; const_debug unsigned int sysctl_sched_migration_cost = 500000UL;