projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e33e0a43 | 1 | perf-record(1) |
| c1c2365a | 2 | ============== |
| e33e0a43 IM |
3 | |
| 4 | NAME | |
| 5 | ---- | |
| 23ac9cbe | 6 | perf-record - Run a command and record its profile into perf.data |
| e33e0a43 IM |
7 | |
| 8 | SYNOPSIS | |
| 9 | -------- | |
| 10 | [verse] | |
| 11 | 'perf record' [-e <EVENT> | --event=EVENT] [-l] [-a] <command> | |
| 9e096753 | 12 | 'perf record' [-e <EVENT> | --event=EVENT] [-l] [-a] -- <command> [<options>] |
| e33e0a43 IM |
13 | |
| 14 | DESCRIPTION | |
| 15 | ----------- | |
| 16 | This command runs a command and gathers a performance counter profile | |
| 23ac9cbe | 17 | from it, into perf.data - without displaying anything. |
| e33e0a43 IM |
18 | |
| 19 | This file can then be inspected later on, using 'perf report'. | |
| 20 | ||
| 21 | ||
| 22 | OPTIONS | |
| 23 | ------- | |
| 24 | <command>...:: | |
| 25 | Any command you can specify in a shell. | |
| 26 | ||
| 27 | -e:: | |
| 28 | --event=:: | |
| 386b05e3 TG |
29 | Select the PMU event. Selection can be a symbolic event name |
| 30 | (use 'perf list' to list all events) or a raw PMU | |
| 31 | event (eventsel+umask) in the form of rNNN where NNN is a | |
| 386c0b70 | 32 | hexadecimal event descriptor. |
| e33e0a43 IM |
33 | |
| 34 | -a:: | |
| 386c0b70 | 35 | System-wide collection. |
| e33e0a43 IM |
36 | |
| 37 | -l:: | |
| 386c0b70 ACM |
38 | Scale counter values. |
| 39 | ||
| 40 | -p:: | |
| 41 | --pid=:: | |
| 42 | Record events on existing pid. | |
| 43 | ||
| 44 | -r:: | |
| 45 | --realtime=:: | |
| 46 | Collect data with this RT SCHED_FIFO priority. | |
| 47 | -A:: | |
| 48 | --append:: | |
| 49 | Append to the output file to do incremental profiling. | |
| 50 | ||
| 51 | -f:: | |
| 52 | --force:: | |
| 53 | Overwrite existing data file. | |
| 54 | ||
| 55 | -c:: | |
| 56 | --count=:: | |
| 57 | Event period to sample. | |
| 58 | ||
| 59 | -o:: | |
| 60 | --output=:: | |
| 61 | Output file name. | |
| 62 | ||
| 63 | -i:: | |
| 64 | --inherit:: | |
| 65 | Child tasks inherit counters. | |
| 66 | -F:: | |
| 67 | --freq=:: | |
| 68 | Profile at this frequency. | |
| 69 | ||
| 70 | -m:: | |
| 71 | --mmap-pages=:: | |
| 72 | Number of mmap data pages. | |
| 73 | ||
| 74 | -g:: | |
| 75 | --call-graph:: | |
| 76 | Do call-graph (stack chain/backtrace) recording. | |
| 77 | ||
| 78 | -v:: | |
| 79 | --verbose:: | |
| 80 | Be more verbose (show counter open errors, etc). | |
| 81 | ||
| 82 | -s:: | |
| 83 | --stat:: | |
| 84 | Per thread counts. | |
| 85 | ||
| 86 | -d:: | |
| 87 | --data:: | |
| 88 | Sample addresses. | |
| 89 | ||
| 90 | -n:: | |
| 91 | --no-samples:: | |
| 92 | Don't sample. | |
| e33e0a43 | 93 | |
| e33e0a43 IM |
94 | SEE ALSO |
| 95 | -------- | |
| 386b05e3 | 96 | linkperf:perf-stat[1], linkperf:perf-list[1] |