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| author | Jiri Olsa <jolsa@kernel.org> | 2021-02-08 23:08:58 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-02-11 16:19:52 +0300 |
| commit | 6a6d1804a190ef0d8ac35a5728cee2e19dd00777 (patch) | |
| tree | f05034aa6fa649e15c7e914848a4014d2c902b5d /tools/perf/Documentation/perf-daemon.txt | |
| parent | 8c98be6c36a1798557a6792bcc158768865132e8 (diff) | |
| download | linux-6a6d1804a190ef0d8ac35a5728cee2e19dd00777.tar.xz | |
perf daemon: Set control fifo for session
Setup control fifos for session and add --control option to session
arguments.
Example:
# 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
Use can list control fifos with (control and ack files):
# perf daemon -v
[776459:daemon] base: /opt/perfdata
output: /opt/perfdata/output
lock: /opt/perfdata/lock
[776460:cycles] perf record -m 20M -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
[776461: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
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/20210208200908.1019149-15-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-daemon.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-daemon.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-daemon.txt b/tools/perf/Documentation/perf-daemon.txt index 3c9e265858b2..b1acd468b89c 100644 --- a/tools/perf/Documentation/perf-daemon.txt +++ b/tools/perf/Documentation/perf-daemon.txt @@ -37,6 +37,9 @@ flight recorder sessions in above example or session that is configured to produce data periodically, like with --switch-output configuration for time and size. +Each session is started with control setup (with perf record --control +options). + OPTIONS ------- -v:: |