diff options
Diffstat (limited to 'kernel/sched_fair.c')
-rw-r--r-- | kernel/sched_fair.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index ee00da284b12..2f16e15c022c 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c | |||
@@ -22,7 +22,7 @@ | |||
22 | 22 | ||
23 | /* | 23 | /* |
24 | * Targeted preemption latency for CPU-bound tasks: | 24 | * Targeted preemption latency for CPU-bound tasks: |
25 | * (default: 20ms * ilog(ncpus), units: nanoseconds) | 25 | * (default: 20ms * (1 + ilog(ncpus)), units: nanoseconds) |
26 | * | 26 | * |
27 | * NOTE: this latency value is not the same as the concept of | 27 | * NOTE: this latency value is not the same as the concept of |
28 | * 'timeslice length' - timeslices in CFS are of variable length | 28 | * 'timeslice length' - timeslices in CFS are of variable length |
@@ -36,14 +36,14 @@ unsigned int sysctl_sched_latency = 20000000ULL; | |||
36 | 36 | ||
37 | /* | 37 | /* |
38 | * Minimal preemption granularity for CPU-bound tasks: | 38 | * Minimal preemption granularity for CPU-bound tasks: |
39 | * (default: 1 msec * ilog(ncpus), units: nanoseconds) | 39 | * (default: 4 msec * (1 + ilog(ncpus)), units: nanoseconds) |
40 | */ | 40 | */ |
41 | unsigned int sysctl_sched_min_granularity = 1000000ULL; | 41 | unsigned int sysctl_sched_min_granularity = 4000000ULL; |
42 | 42 | ||
43 | /* | 43 | /* |
44 | * is kept at sysctl_sched_latency / sysctl_sched_min_granularity | 44 | * is kept at sysctl_sched_latency / sysctl_sched_min_granularity |
45 | */ | 45 | */ |
46 | static unsigned int sched_nr_latency = 20; | 46 | static unsigned int sched_nr_latency = 5; |
47 | 47 | ||
48 | /* | 48 | /* |
49 | * After fork, child runs first. (default) If set to 0 then | 49 | * After fork, child runs first. (default) If set to 0 then |
@@ -61,7 +61,7 @@ unsigned int __read_mostly sysctl_sched_compat_yield; | |||
61 | 61 | ||
62 | /* | 62 | /* |
63 | * SCHED_BATCH wake-up granularity. | 63 | * SCHED_BATCH wake-up granularity. |
64 | * (default: 10 msec * ilog(ncpus), units: nanoseconds) | 64 | * (default: 10 msec * (1 + ilog(ncpus)), units: nanoseconds) |
65 | * | 65 | * |
66 | * This option delays the preemption effects of decoupled workloads | 66 | * This option delays the preemption effects of decoupled workloads |
67 | * and reduces their over-scheduling. Synchronous workloads will still | 67 | * and reduces their over-scheduling. Synchronous workloads will still |
@@ -71,7 +71,7 @@ unsigned int sysctl_sched_batch_wakeup_granularity = 10000000UL; | |||
71 | 71 | ||
72 | /* | 72 | /* |
73 | * SCHED_OTHER wake-up granularity. | 73 | * SCHED_OTHER wake-up granularity. |
74 | * (default: 10 msec * ilog(ncpus), units: nanoseconds) | 74 | * (default: 10 msec * (1 + ilog(ncpus)), units: nanoseconds) |
75 | * | 75 | * |
76 | * This option delays the preemption effects of decoupled workloads | 76 | * This option delays the preemption effects of decoupled workloads |
77 | * and reduces their over-scheduling. Synchronous workloads will still | 77 | * and reduces their over-scheduling. Synchronous workloads will still |