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Diffstat (limited to 'Documentation/scheduler/sched-rt-group.txt')
| -rw-r--r-- | Documentation/scheduler/sched-rt-group.txt | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/scheduler/sched-rt-group.txt b/Documentation/scheduler/sched-rt-group.txt index 71b54d549987..d8fce3e78457 100644 --- a/Documentation/scheduler/sched-rt-group.txt +++ b/Documentation/scheduler/sched-rt-group.txt @@ -133,7 +133,7 @@ This uses the cgroup virtual file system and "<cgroup>/cpu.rt_runtime_us" to control the CPU time reserved for each control group. For more information on working with control groups, you should read -Documentation/cgroups/cgroups.txt as well. +Documentation/cgroup-v1/cgroups.txt as well. Group settings are checked against the following limits in order to keep the configuration schedulable: @@ -158,11 +158,11 @@ as its prone to starvation without deadline scheduling. Consider two sibling groups A and B; both have 50% bandwidth, but A's period is twice the length of B's. -* group A: period=100000us, runtime=10000us - - this runs for 0.01s once every 0.1s +* group A: period=100000us, runtime=50000us + - this runs for 0.05s once every 0.1s -* group B: period= 50000us, runtime=10000us - - this runs for 0.01s twice every 0.1s (or once every 0.05 sec). +* group B: period= 50000us, runtime=25000us + - this runs for 0.025s twice every 0.1s (or once every 0.05 sec). This means that currently a while (1) loop in A will run for the full period of B and can starve B's tasks (assuming they are of lower priority) for a whole |