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perf-kowrk(1)
=============
NAME
----
perf-kwork - Tool to trace/measure kernel work properties (latencies)
SYNOPSIS
--------
[verse]
'perf kwork' {record}
DESCRIPTION
-----------
There are several variants of 'perf kwork':
'perf kwork record <command>' to record the kernel work
of an arbitrary workload.
'perf kwork report' to report the per kwork runtime.
'perf kwork latency' to report the per kwork latencies.
Example usage:
perf kwork record -- sleep 1
perf kwork report
perf kwork latency
OPTIONS
-------
-D::
--dump-raw-trace=::
Display verbose dump of the sched data.
-f::
--force::
Don't complain, do it.
-k::
--kwork::
List of kwork to profile (irq, softirq, workqueue, etc)
-v::
--verbose::
Be more verbose. (show symbol address, etc)
OPTIONS for 'perf kwork report'
----------------------------
-C::
--cpu::
Only show events for the given CPU(s) (comma separated list).
-i::
--input::
Input file name. (default: perf.data unless stdin is a fifo)
-n::
--name::
Only show events for the given name.
-s::
--sort::
Sort by key(s): runtime, max, count
-S::
--with-summary::
Show summary with statistics
--time::
Only analyze samples within given time window: <start>,<stop>. Times
have the format seconds.microseconds. If start is not given (i.e., time
string is ',x.y') then analysis starts at the beginning of the file. If
stop time is not given (i.e, time string is 'x.y,') then analysis goes
to end of file.
OPTIONS for 'perf kwork latency'
----------------------------
-C::
--cpu::
Only show events for the given CPU(s) (comma separated list).
-i::
--input::
Input file name. (default: perf.data unless stdin is a fifo)
-n::
--name::
Only show events for the given name.
-s::
--sort::
Sort by key(s): avg, max, count
--time::
Only analyze samples within given time window: <start>,<stop>. Times
have the format seconds.microseconds. If start is not given (i.e., time
string is ',x.y') then analysis starts at the beginning of the file. If
stop time is not given (i.e, time string is 'x.y,') then analysis goes
to end of file.
SEE ALSO
--------
linkperf:perf-record[1]
|
