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Diffstat (limited to 'Documentation/scheduler/sched-stats.rst')
| -rw-r--r-- | Documentation/scheduler/sched-stats.rst | 53 |
1 files changed, 31 insertions, 22 deletions
diff --git a/Documentation/scheduler/sched-stats.rst b/Documentation/scheduler/sched-stats.rst index d82e7d2b54f0..9d6a337755f4 100644 --- a/Documentation/scheduler/sched-stats.rst +++ b/Documentation/scheduler/sched-stats.rst @@ -86,13 +86,16 @@ Domain statistics ----------------- One of these is produced per domain for each cpu described. (Note that if CONFIG_SMP is not defined, *no* domains are utilized and these lines -will not appear in the output. <name> is an extension to the domain field -that prints the name of the corresponding sched domain. It can appear in -schedstat version 17 and above. +will not appear in the output.) domain<N> <name> <cpumask> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 -The first field is a bit mask indicating what cpus this domain operates over. +The <name> field prints the name of the sched domain and is only supported +with schedstat version >= 17. On previous versions, <cpumask> is the first +field. + +The <cpumask> field is a bit mask indicating what cpus this domain operates +over. The next 33 are a variety of sched_balance_rq() statistics in grouped into types of idleness (busy, idle and newly idle): @@ -103,12 +106,13 @@ of idleness (busy, idle and newly idle): load did not require balancing when busy 3) # of times in this domain sched_balance_rq() tried to move one or more tasks and failed, when the cpu was busy - 4) Total imbalance in load when the cpu was busy - 5) Total imbalance in utilization when the cpu was busy - 6) Total imbalance in number of tasks when the cpu was busy - 7) Total imbalance due to misfit tasks when the cpu was busy - 8) # of times in this domain pull_task() was called when busy - 9) # of times in this domain pull_task() was called even though the + 4) Total imbalance in load in this domain when the cpu was busy + 5) Total imbalance in utilization in this domain when the cpu was busy + 6) Total imbalance in number of tasks in this domain when the cpu was busy + 7) Total imbalance due to misfit tasks in this domain when the cpu was + busy + 8) # of times in this domain detach_task() was called when busy + 9) # of times in this domain detach_task() was called even though the target task was cache-hot when busy 10) # of times in this domain sched_balance_rq() was called but did not find a busier queue while the cpu was busy @@ -121,13 +125,14 @@ of idleness (busy, idle and newly idle): the load did not require balancing when the cpu was idle 14) # of times in this domain sched_balance_rq() tried to move one or more tasks and failed, when the cpu was idle - 15) Total imbalance in load when the cpu was idle - 16) Total imbalance in utilization when the cpu was idle - 17) Total imbalance in number of tasks when the cpu was idle - 18) Total imbalance due to misfit tasks when the cpu was idle - 19) # of times in this domain pull_task() was called when the cpu + 15) Total imbalance in load in this domain when the cpu was idle + 16) Total imbalance in utilization in this domain when the cpu was idle + 17) Total imbalance in number of tasks in this domain when the cpu was idle + 18) Total imbalance due to misfit tasks in this domain when the cpu was + idle + 19) # of times in this domain detach_task() was called when the cpu was idle - 20) # of times in this domain pull_task() was called even though + 20) # of times in this domain detach_task() was called even though the target task was cache-hot when idle 21) # of times in this domain sched_balance_rq() was called but did not find a busier queue while the cpu was idle @@ -140,12 +145,16 @@ of idleness (busy, idle and newly idle): load did not require balancing when the cpu was just becoming idle 25) # of times in this domain sched_balance_rq() tried to move one or more tasks and failed, when the cpu was just becoming idle - 26) Total imbalance in load when the cpu was just becoming idle - 27) Total imbalance in utilization when the cpu was just becoming idle - 28) Total imbalance in number of tasks when the cpu was just becoming idle - 29) Total imbalance due to misfit tasks when the cpu was just becoming idle - 30) # of times in this domain pull_task() was called when newly idle - 31) # of times in this domain pull_task() was called even though the + 26) Total imbalance in load in this domain when the cpu was just becoming + idle + 27) Total imbalance in utilization in this domain when the cpu was just + becoming idle + 28) Total imbalance in number of tasks in this domain when the cpu was just + becoming idle + 29) Total imbalance due to misfit tasks in this domain when the cpu was + just becoming idle + 30) # of times in this domain detach_task() was called when newly idle + 31) # of times in this domain detach_task() was called even though the target task was cache-hot when just becoming idle 32) # of times in this domain sched_balance_rq() was called but did not find a busier queue while the cpu was just becoming idle |