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-perf-sched(1)
-==============
-
-NAME
-----
-perf-sched - Tool to trace/measure scheduler properties (latencies)
-
-SYNOPSIS
---------
-[verse]
-'perf sched' {record|latency|map|replay|script}
-
-DESCRIPTION
------------
-There are five 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 script' to see a detailed trace of the workload that
- was recorded (aliased to 'perf script' for now).
-
- '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 occurred when it was recorded - and can repeat
- it a number of times, measuring its performance.)
-
- 'perf sched map' to print a textual context-switching outline of
- workload captured via perf sched record. Columns stand for
- individual CPUs, and the two-letter shortcuts stand for tasks that
- are running on a CPU. A '*' denotes the CPU that had the event, and
- a dot signals an idle CPU.
-
-OPTIONS
--------
--i::
---input=<file>::
- Input file name. (default: perf.data unless stdin is a fifo)
-
--v::
---verbose::
- Be more verbose. (show symbol address, etc)
-
--D::
---dump-raw-trace=::
- Display verbose dump of the sched data.
-
-SEE ALSO
---------
-linkperf:perf-record[1]