Messages in this thread | | | From | Jiri Olsa <> | Subject | [PATCHv2 00/22] perf tools: Add daemon command | Date | Sat, 2 Jan 2021 23:04:19 +0100 |
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hi, we were asked for possibility to be able run record sessions on background.
This patchset adds support to configure and run record sessions on background via new 'perf daemon' command.
Please check below the example on usage.
The patchset is based on following control changes: https://lore.kernel.org/lkml/20201226232038.390883-1-jolsa@kernel.org/
Available also here: git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git perf/daemon
v2 changes: - switch options to sub-commands [Namhyung] - use signalfd to track on sessions [Alexei] - use stop command to stop sessions [Alexei] - couple minor fixes [Alexei] - more detailed changelogs [Arnaldo] - added tests
thanks, jirka
--- Jiri Olsa (22): perf tools: Make perf_config_from_file static perf tools: Add config set interface perf tools: Add debug_set_display_time function perf tools: Add perf_home_perfconfig function perf tools: Make perf_config_system global perf tools: Make perf_config_global gobal perf daemon: Add daemon command perf daemon: Add config file change check perf daemon: Add signalfd support perf daemon: Add signal command perf daemon: Add stop command perf daemon: Allow only one daemon over base directory perf daemon: Set control fifo for session perf daemon: Add ping command perf daemon: Use control to stop session perf daemon: Add up time for daemon/session list perf daemon: Add man page for perf-daemon perf test: Add daemon list command test perf test: Add daemon reconfig test perf test: Add daemon stop command test perf test: Add daemon signal command test perf test: Add daemon ping command test
tools/perf/Build | 1 + tools/perf/Documentation/perf-config.txt | 14 ++ tools/perf/Documentation/perf-daemon.txt | 187 ++++++++++++++++ tools/perf/builtin-daemon.c | 1327 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/builtin.h | 1 + tools/perf/command-list.txt | 1 + tools/perf/perf.c | 1 + tools/perf/tests/shell/daemon.sh | 388 ++++++++++++++++++++++++++++++++ tools/perf/util/config.c | 123 +++++++---- tools/perf/util/config.h | 7 +- tools/perf/util/debug.c | 34 ++- tools/perf/util/debug.h | 1 + 12 files changed, 2037 insertions(+), 48 deletions(-) create mode 100644 tools/perf/Documentation/perf-daemon.txt create mode 100644 tools/perf/builtin-daemon.c create mode 100755 tools/perf/tests/shell/daemon.sh
--- 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
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