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-rw-r--r--kernel/sched_fair.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index b5270dc98bef..6b0974c3fb67 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -19,7 +19,7 @@
/*
* Preemption granularity:
- * (default: 2 msec, units: nanoseconds)
+ * (default: 10 msec, units: nanoseconds)
*
* NOTE: this granularity value is not the same as the concept of
* 'timeslice length' - timeslices in CFS will typically be somewhat
@@ -31,18 +31,17 @@
* number of CPUs. (i.e. factor 2x on 2-way systems, 3x on 4-way
* systems, 4x on 8-way systems, 5x on 16-way systems, etc.)
*/
-unsigned int sysctl_sched_granularity __read_mostly = 2000000000ULL/HZ;
+unsigned int sysctl_sched_granularity __read_mostly = 10000000UL;
/*
* SCHED_BATCH wake-up granularity.
- * (default: 10 msec, units: nanoseconds)
+ * (default: 25 msec, 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_batch_wakeup_granularity __read_mostly =
- 10000000000ULL/HZ;
+unsigned int sysctl_sched_batch_wakeup_granularity __read_mostly = 25000000UL;
/*
* SCHED_OTHER wake-up granularity.
@@ -52,12 +51,12 @@ unsigned int sysctl_sched_batch_wakeup_granularity __read_mostly =
* and reduces their over-scheduling. Synchronous workloads will still
* have immediate wakeup/sleep latencies.
*/
-unsigned int sysctl_sched_wakeup_granularity __read_mostly = 1000000000ULL/HZ;
+unsigned int sysctl_sched_wakeup_granularity __read_mostly = 1000000UL;
unsigned int sysctl_sched_stat_granularity __read_mostly;
/*
- * Initialized in sched_init_granularity():
+ * Initialized in sched_init_granularity() [to 5 times the base granularity]:
*/
unsigned int sysctl_sched_runtime_limit __read_mostly;