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-rw-r--r--Documentation/scheduler/sched-rt-group.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/scheduler/sched-rt-group.rst b/Documentation/scheduler/sched-rt-group.rst
index 80b05a3009ea..ab464335d320 100644
--- a/Documentation/scheduler/sched-rt-group.rst
+++ b/Documentation/scheduler/sched-rt-group.rst
@@ -102,6 +102,9 @@ The system wide settings are configured under the /proc virtual file system:
* sched_rt_period_us takes values from 1 to INT_MAX.
* sched_rt_runtime_us takes values from -1 to sched_rt_period_us.
* A run time of -1 specifies runtime == period, ie. no limit.
+ * sched_rt_runtime_us/sched_rt_period_us > 0.05 inorder to preserve
+ bandwidth for fair dl_server. For accurate value check average of
+ runtime/period in /sys/kernel/debug/sched/fair_server/cpuX/
2.2 Default behaviour