mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-30 14:19:16 +00:00
perf daemon: Add examples to man page
Add usage examples to the man page. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: https://lore.kernel.org/r/20210208200908.1019149-19-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
5bdee4f051
commit
13fb3b9f5b
1 changed files with 98 additions and 0 deletions
|
@ -41,6 +41,10 @@ for time and size.
|
||||||
Each session is started with control setup (with perf record --control
|
Each session is started with control setup (with perf record --control
|
||||||
options).
|
options).
|
||||||
|
|
||||||
|
Sessions are configured through config file, see CONFIG FILE section
|
||||||
|
with EXAMPLES.
|
||||||
|
|
||||||
|
|
||||||
OPTIONS
|
OPTIONS
|
||||||
-------
|
-------
|
||||||
-v::
|
-v::
|
||||||
|
@ -105,6 +109,100 @@ session-<NAME>.run:
|
||||||
Each perf record session is run in daemon.base/<NAME> directory.
|
Each perf record session is run in daemon.base/<NAME> directory.
|
||||||
|
|
||||||
|
|
||||||
|
EXAMPLES
|
||||||
|
--------
|
||||||
|
Example with 2 record sessions:
|
||||||
|
|
||||||
|
# cat ~/.perfconfig
|
||||||
|
[daemon]
|
||||||
|
base=/opt/perfdata
|
||||||
|
|
||||||
|
[session-cycles]
|
||||||
|
run = -m 10M -e cycles --overwrite --switch-output -a
|
||||||
|
|
||||||
|
[session-sched]
|
||||||
|
run = -m 20M -e sched:* --overwrite --switch-output -a
|
||||||
|
|
||||||
|
|
||||||
|
Starting the daemon:
|
||||||
|
|
||||||
|
# perf daemon start
|
||||||
|
|
||||||
|
|
||||||
|
Check sessions:
|
||||||
|
|
||||||
|
# perf daemon
|
||||||
|
[603349:daemon] base: /opt/perfdata
|
||||||
|
[603350:cycles] perf record -m 10M -e cycles --overwrite --switch-output -a
|
||||||
|
[603351:sched] perf record -m 20M -e sched:* --overwrite --switch-output -a
|
||||||
|
|
||||||
|
First line is daemon process info with configured daemon base.
|
||||||
|
|
||||||
|
|
||||||
|
Check sessions with more info:
|
||||||
|
|
||||||
|
# perf daemon -v
|
||||||
|
[603349:daemon] base: /opt/perfdata
|
||||||
|
output: /opt/perfdata/output
|
||||||
|
lock: /opt/perfdata/lock
|
||||||
|
up: 1 minutes
|
||||||
|
[603350:cycles] perf record -m 10M -e cycles --overwrite --switch-output -a
|
||||||
|
base: /opt/perfdata/session-cycles
|
||||||
|
output: /opt/perfdata/session-cycles/output
|
||||||
|
control: /opt/perfdata/session-cycles/control
|
||||||
|
ack: /opt/perfdata/session-cycles/ack
|
||||||
|
up: 1 minutes
|
||||||
|
[603351:sched] perf record -m 20M -e sched:* --overwrite --switch-output -a
|
||||||
|
base: /opt/perfdata/session-sched
|
||||||
|
output: /opt/perfdata/session-sched/output
|
||||||
|
control: /opt/perfdata/session-sched/control
|
||||||
|
ack: /opt/perfdata/session-sched/ack
|
||||||
|
up: 1 minutes
|
||||||
|
|
||||||
|
The 'base' path is daemon/session base.
|
||||||
|
The 'lock' file is daemon's lock file guarding that no other
|
||||||
|
daemon is running on top of the base.
|
||||||
|
The 'output' file is perf record output for specific session.
|
||||||
|
The 'control' and 'ack' files are perf control files.
|
||||||
|
The 'up' number shows minutes daemon/session is running.
|
||||||
|
|
||||||
|
|
||||||
|
Make sure control session is online:
|
||||||
|
|
||||||
|
# perf daemon ping
|
||||||
|
OK cycles
|
||||||
|
OK sched
|
||||||
|
|
||||||
|
|
||||||
|
Send USR2 signal to session 'cycles' to generate perf.data file:
|
||||||
|
|
||||||
|
# perf daemon signal --session cycles
|
||||||
|
signal 12 sent to session 'cycles [603452]'
|
||||||
|
|
||||||
|
# tail -2 /opt/perfdata/session-cycles/output
|
||||||
|
[ perf record: dump data: Woken up 1 times ]
|
||||||
|
[ perf record: Dump perf.data.2020123017013149 ]
|
||||||
|
|
||||||
|
|
||||||
|
Send USR2 signal to all sessions:
|
||||||
|
|
||||||
|
# perf daemon signal
|
||||||
|
signal 12 sent to session 'cycles [603452]'
|
||||||
|
signal 12 sent to session 'sched [603453]'
|
||||||
|
|
||||||
|
# tail -2 /opt/perfdata/session-cycles/output
|
||||||
|
[ perf record: dump data: Woken up 1 times ]
|
||||||
|
[ perf record: Dump perf.data.2020123017024689 ]
|
||||||
|
# tail -2 /opt/perfdata/session-sched/output
|
||||||
|
[ perf record: dump data: Woken up 1 times ]
|
||||||
|
[ perf record: Dump perf.data.2020123017024713 ]
|
||||||
|
|
||||||
|
|
||||||
|
Stop daemon:
|
||||||
|
|
||||||
|
# perf daemon stop
|
||||||
|
|
||||||
|
|
||||||
SEE ALSO
|
SEE ALSO
|
||||||
--------
|
--------
|
||||||
linkperf:perf-record[1], linkperf:perf-config[1]
|
linkperf:perf-record[1], linkperf:perf-config[1]
|
||||||
|
|
Loading…
Reference in a new issue