1d450bc50SJiri Olsaperf-daemon(1) 2d450bc50SJiri Olsa============== 3d450bc50SJiri Olsa 4d450bc50SJiri Olsa 5d450bc50SJiri OlsaNAME 6d450bc50SJiri Olsa---- 7d450bc50SJiri Olsaperf-daemon - Run record sessions on background 8d450bc50SJiri Olsa 9d450bc50SJiri Olsa 10d450bc50SJiri OlsaSYNOPSIS 11d450bc50SJiri Olsa-------- 12d450bc50SJiri Olsa[verse] 13d450bc50SJiri Olsa'perf daemon' 14d450bc50SJiri Olsa'perf daemon' [<options>] 15d450bc50SJiri Olsa'perf daemon start' [<options>] 1623c5831eSJiri Olsa'perf daemon stop' [<options>] 172d6914cdSJiri Olsa'perf daemon signal' [<options>] 18d450bc50SJiri Olsa 19d450bc50SJiri Olsa 20d450bc50SJiri OlsaDESCRIPTION 21d450bc50SJiri Olsa----------- 22d450bc50SJiri OlsaThis command allows to run simple daemon process that starts and 23d450bc50SJiri Olsamonitors configured record sessions. 24d450bc50SJiri Olsa 25c0666261SJiri OlsaYou can imagine 'perf daemon' of background process with several 26c0666261SJiri Olsa'perf record' child tasks, like: 27c0666261SJiri Olsa 28c0666261SJiri Olsa # ps axjf 29c0666261SJiri Olsa ... 30c0666261SJiri Olsa 1 916507 ... perf daemon start 31c0666261SJiri Olsa 916507 916508 ... \_ perf record --control=fifo:control,ack -m 10M -e cycles --overwrite --switch-output -a 32c0666261SJiri Olsa 916507 916509 ... \_ perf record --control=fifo:control,ack -m 20M -e sched:* --overwrite --switch-output -a 33c0666261SJiri Olsa 34c0666261SJiri OlsaNot every 'perf record' session is suitable for running under daemon. 35c0666261SJiri OlsaUser need perf session that either produces data on query, like the 36c0666261SJiri Olsaflight recorder sessions in above example or session that is configured 37c0666261SJiri Olsato produce data periodically, like with --switch-output configuration 38c0666261SJiri Olsafor time and size. 39d450bc50SJiri Olsa 40d450bc50SJiri OlsaOPTIONS 41d450bc50SJiri Olsa------- 42d450bc50SJiri Olsa-v:: 43d450bc50SJiri Olsa--verbose:: 44d450bc50SJiri Olsa Be more verbose. 45d450bc50SJiri Olsa 46fc1dcb1eSJiri Olsa--config=<PATH>:: 47fc1dcb1eSJiri Olsa Config file path. If not provided, perf will check system and default 48fc1dcb1eSJiri Olsa locations (/etc/perfconfig, $HOME/.perfconfig). 49fc1dcb1eSJiri Olsa 505631d100SJiri Olsa--base=<PATH>:: 515631d100SJiri Olsa Base directory path. Each daemon instance is running on top 525631d100SJiri Olsa of base directory. 535631d100SJiri Olsa 54d450bc50SJiri OlsaAll generic options are available also under commands. 55d450bc50SJiri Olsa 56d450bc50SJiri Olsa 57d450bc50SJiri OlsaSTART COMMAND 58d450bc50SJiri Olsa------------- 59d450bc50SJiri OlsaThe start command creates the daemon process. 60d450bc50SJiri Olsa 6188adb119SJiri Olsa-f:: 6288adb119SJiri Olsa--foreground:: 6388adb119SJiri Olsa Do not put the process in background. 6488adb119SJiri Olsa 65d450bc50SJiri Olsa 6623c5831eSJiri OlsaSTOP COMMAND 6723c5831eSJiri Olsa------------ 6823c5831eSJiri OlsaThe stop command stops all the session and the daemon process. 6923c5831eSJiri Olsa 7023c5831eSJiri Olsa 712d6914cdSJiri OlsaSIGNAL COMMAND 722d6914cdSJiri Olsa-------------- 732d6914cdSJiri OlsaThe signal command sends signal to configured sessions. 742d6914cdSJiri Olsa 752d6914cdSJiri Olsa--session:: 762d6914cdSJiri Olsa Send signal to specific session. 772d6914cdSJiri Olsa 782d6914cdSJiri Olsa 79c0666261SJiri OlsaCONFIG FILE 80c0666261SJiri Olsa----------- 81c0666261SJiri OlsaThe daemon is configured within standard perf config file by 82c0666261SJiri Olsafollowing new variables: 83c0666261SJiri Olsa 84c0666261SJiri Olsadaemon.base: 85c0666261SJiri Olsa Base path for daemon data. All sessions data are 86c0666261SJiri Olsa stored under this path. 87c0666261SJiri Olsa 88c0666261SJiri Olsasession-<NAME>.run: 89c0666261SJiri Olsa Defines new record session. The value is record's command 90c0666261SJiri Olsa line without the 'record' keyword. 91c0666261SJiri Olsa 92c0666261SJiri OlsaEach perf record session is run in daemon.base/<NAME> directory. 93c0666261SJiri Olsa 94c0666261SJiri Olsa 95d450bc50SJiri OlsaSEE ALSO 96d450bc50SJiri Olsa-------- 97d450bc50SJiri Olsalinkperf:perf-record[1], linkperf:perf-config[1] 98