1 perf-lock(1) 2 ============ 3 4 NAME 5 ---- 6 perf-lock - Analyze lock events 7 8 SYNOPSIS 9 -------- 10 [verse] 11 'perf lock' {record|report|script|info} 12 13 DESCRIPTION 14 ----------- 15 You can analyze various lock behaviours 16 and statistics with this 'perf lock' command. 17 18 'perf lock record <command>' records lock events 19 between start and end <command>. And this command 20 produces the file "perf.data" which contains tracing 21 results of lock events. 22 23 'perf lock report' reports statistical data. 24 25 'perf lock script' shows raw lock events. 26 27 'perf lock info' shows metadata like threads or addresses 28 of lock instances. 29 30 COMMON OPTIONS 31 -------------- 32 33 -i:: 34 --input=<file>:: 35 Input file name. (default: perf.data unless stdin is a fifo) 36 37 -v:: 38 --verbose:: 39 Be more verbose (show symbol address, etc). 40 41 -D:: 42 --dump-raw-trace:: 43 Dump raw trace in ASCII. 44 45 REPORT OPTIONS 46 -------------- 47 48 -k:: 49 --key=<value>:: 50 Sorting key. Possible values: acquired (default), contended, 51 wait_total, wait_max, wait_min. 52 53 INFO OPTIONS 54 ------------ 55 56 -t:: 57 --threads:: 58 dump thread list in perf.data 59 60 -m:: 61 --map:: 62 dump map of lock instances (address:name table) 63 64 SEE ALSO 65 -------- 66 linkperf:perf[1] 67
