projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d8c8b20 IM |
1 | perf-stat(1) |
| 2 | ========== | |
| 3 | ||
| 4 | NAME | |
| 5 | ---- | |
| 6 | perf-stat - Run a command and gather performance counter statistics | |
| 7 | ||
| 8 | SYNOPSIS | |
| 9 | -------- | |
| 10 | [verse] | |
| 11 | 'perf stat' [-e <EVENT> | --event=EVENT] [-l] [-a] <command> | |
| 9e096753 | 12 | 'perf stat' [-e <EVENT> | --event=EVENT] [-l] [-a] -- <command> [<options>] |
| 1d8c8b20 IM |
13 | |
| 14 | DESCRIPTION | |
| 15 | ----------- | |
| 16 | This command runs a command and gathers performance counter statistics | |
| 17 | from it. | |
| 18 | ||
| 19 | ||
| 20 | OPTIONS | |
| 21 | ------- | |
| 22 | <command>...:: | |
| 23 | Any command you can specify in a shell. | |
| 24 | ||
| 25 | -e:: | |
| 26 | --event=:: | |
| 27 | 0:0: cpu-cycles | |
| 28 | 0:0: cycles | |
| 29 | 0:1: instructions | |
| 30 | 0:2: cache-references | |
| 31 | 0:3: cache-misses | |
| 32 | 0:4: branch-instructions | |
| 33 | 0:4: branches | |
| 34 | 0:5: branch-misses | |
| 35 | 0:6: bus-cycles | |
| 36 | 1:0: cpu-clock | |
| 37 | 1:1: task-clock | |
| 38 | 1:2: page-faults | |
| 39 | 1:2: faults | |
| 40 | 1:5: minor-faults | |
| 41 | 1:6: major-faults | |
| 42 | 1:3: context-switches | |
| 43 | 1:3: cs | |
| 44 | 1:4: cpu-migrations | |
| 45 | 1:4: migrations | |
| 46 | rNNN: raw PMU events (eventsel+umask) | |
| 47 | ||
| 48 | -a:: | |
| 49 | system-wide collection | |
| 50 | ||
| 51 | -l:: | |
| 52 | scale counter values | |
| 53 | ||
| 54 | Configuration | |
| 55 | ------------- | |
| 56 | ||
| 57 | EXAMPLES | |
| 58 | -------- | |
| 59 | ||
| 60 | $ perf stat sleep 1 | |
| 61 | ||
| 62 | Performance counter stats for 'sleep': | |
| 63 | ||
| 64 | 0.678356 task clock ticks (msecs) | |
| 65 | 7 context switches (events) | |
| 66 | 4 CPU migrations (events) | |
| 67 | 232 pagefaults (events) | |
| 68 | 1810403 CPU cycles (events) | |
| 69 | 946759 instructions (events) | |
| 70 | 18952 cache references (events) | |
| 71 | 4885 cache misses (events) | |
| 72 | ||
| 73 | Wall-clock time elapsed: 1001.252894 msecs | |
| 74 | ||
| 75 | SEE ALSO | |
| 76 | -------- | |
| 77 | linkperf:git-tops[1] |