c13f0d3c81
Alias 'perf sched trace' to 'perf trace', for workflow completeness. Add a bit of documentation for perf sched. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
42 lines
1.0 KiB
Plaintext
42 lines
1.0 KiB
Plaintext
perf-sched(1)
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==============
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NAME
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----
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perf-sched - Tool to trace/measure scheduler properties (latencies)
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SYNOPSIS
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--------
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[verse]
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'perf sched' {record|latency|replay|trace}
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DESCRIPTION
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-----------
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There's four variants of perf sched:
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'perf sched record <command>' to record the scheduling events
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of an arbitrary workload.
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'perf sched latency' to report the per task scheduling latencies
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and other scheduling properties of the workload.
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'perf sched trace' to see a detailed trace of the workload that
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was recorded.
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'perf sched replay' to simulate the workload that was recorded
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via perf sched record. (this is done by starting up mockup threads
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that mimic the workload based on the events in the trace. These
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threads can then replay the timings (CPU runtime and sleep patterns)
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of the workload as it occured when it was recorded - and can repeat
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it a number of times, measuring its performance.)
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OPTIONS
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-------
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-D::
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--dump-raw-trace=::
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Display verbose dump of the sched data.
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SEE ALSO
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--------
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linkperf:perf-record[1]
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