sched: retune wake granularity

reduce wake-up granularity for better interactivity. Signed-off-by: Ingo Molnar <[email protected]>
kishon · Mar 19, 2008 · 74e3cd7 · 74e3cd7
1 parent f540a60
commit 74e3cd7
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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;