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Diffstat (limited to 'tools/perf/Documentation/perf-sched.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-sched.txt | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt index a216d2991b19..6dbbddb6464d 100644 --- a/tools/perf/Documentation/perf-sched.txt +++ b/tools/perf/Documentation/perf-sched.txt @@ -64,8 +64,8 @@ There are several variants of 'perf sched': By default it shows the individual schedule events, including the wait time (time between sched-out and next sched-in events for the task), the - task scheduling delay (time between wakeup and actually running) and run - time for the task: + task scheduling delay (time between runnable and actually running) and + run time for the task: time cpu task name wait time sch delay run time [tid/pid] (msec) (msec) (msec) @@ -130,6 +130,16 @@ OPTIONS for 'perf sched map' --color-pids:: Highlight the given pids. +--task-name <task>:: + Map output only for the given task name(s). Separate the + task names with a comma (without whitespace). The sched-out + time is printed and is represented by '*-' for the given + task name(s). + ('-' indicates other tasks while '.' is idle). + +--fuzzy-name:: + Given task name(s) can be partially matched (fuzzy matching). + OPTIONS for 'perf sched timehist' --------------------------------- -k:: @@ -202,6 +212,30 @@ OPTIONS for 'perf sched timehist' --state:: Show task state when it switched out. +--show-prio:: + Show task priority. + +--prio:: + Only show events for given task priority(ies). Multiple priorities can be + provided as a comma-separated list with no spaces: 0,120. Ranges of + priorities are specified with -: 120-129. A combination of both can also be + provided: 0,120-129. + +-P:: +--pre-migrations:: + Show pre-migration wait time. pre-migration wait time is the time spent + by a task waiting on a runqueue but not getting the chance to run there + and is migrated to a different runqueue where it is finally run. This + time between sched_wakeup and migrate_task is the pre-migration wait + time. + +OPTIONS for 'perf sched replay' +------------------------------ + +-r:: +--repeat <n>:: + repeat the workload n times (0: infinite). Default is 10. + SEE ALSO -------- linkperf:perf-record[1] |