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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/scheduler/sched-hmp.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/scheduler/sched-hmp.txt b/Documentation/scheduler/sched-hmp.txt index 091d49ea80cf..766c01d321b5 100644 --- a/Documentation/scheduler/sched-hmp.txt +++ b/Documentation/scheduler/sched-hmp.txt @@ -726,6 +726,16 @@ d. /proc/sys/kernel/sched_select_prev_cpu_us Default value of sched_select_prev_cpu_us is 2000 (2ms). This can be turned off by setting it to 0. +e. /proc/sys/kernel/sched_short_burst_ns + This threshold controls whether a task is considered as "short-burst" + or not. "short-burst" tasks are eligible for packing to avoid overhead + associated with waking up an idle CPU. "non-idle" CPUs which are not + loaded with IRQs and can accommodate the waking task without exceeding + spill limits are considered. The ties are broken with load followed + by previous CPU. This tunable does not affect cluster selection. + It only affects CPU selection in a given cluster. This packing is + skipped for tasks that are eligible for "wake-up-idle" and "boost". + **** 5.2.4 Wakeup Logic for Task "p" Wakeup task placement logic is as follows: |