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GNU/Linux |
Debian 6.0.1(Squeeze) |
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perf_2.6.32-sched(1) |
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perf-sched − Tool to trace/measure scheduler properties (latencies)
perf sched {record|latency|replay|trace}
There’s four variants of perf sched:
'perf sched
record <command>' to record the scheduling events
of an arbitrary workload.
'perf sched
latency' to report the per task scheduling latencies
and other scheduling properties of the workload.
'perf sched
trace' to see a detailed trace of the workload that
was recorded.
'perf sched
replay' to simulate the workload that was recorded
via perf sched record. (this is done by starting up mockup
threads
that mimic the workload based on the events in the trace.
These
threads can then replay the timings (CPU runtime and sleep
patterns)
of the workload as it occured when it was recorded −
and can repeat
it a number of times, measuring its performance.)
−D, −−dump−raw−trace=
Display verbose dump of the sched data.
perf_2.6.32-record(1)
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perf_2.6.32-sched(1) | |