diff options
| -rw-r--r-- | Documentation/perf_counter/Documentation/perf-stat.txt | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/Documentation/perf_counter/Documentation/perf-stat.txt b/Documentation/perf_counter/Documentation/perf-stat.txt index a67d0e3b7d0..a340e7be83d 100644 --- a/Documentation/perf_counter/Documentation/perf-stat.txt +++ b/Documentation/perf_counter/Documentation/perf-stat.txt @@ -22,6 +22,7 @@ OPTIONS <command>...:: Any command you can specify in a shell. + -e:: --event=:: 0:0: cpu-cycles @@ -45,6 +46,13 @@ OPTIONS 1:4: migrations rNNN: raw PMU events (eventsel+umask) +-i:: +--inherit:: + child tasks inherit counters +-p:: +--pid=<pid>:: + stat events on existing pid + -a:: system-wide collection @@ -54,20 +62,20 @@ OPTIONS EXAMPLES -------- -$ perf stat sleep 1 +$ perf stat -- make -j - Performance counter stats for 'sleep': + Performance counter stats for 'make -j': - 0.678356 task clock ticks (msecs) - 7 context switches (events) - 4 CPU migrations (events) - 232 pagefaults (events) - 1810403 CPU cycles (events) - 946759 instructions (events) - 18952 cache references (events) - 4885 cache misses (events) + 8117.370256 task clock ticks # 11.281 CPU utilization factor + 678 context switches # 0.000 M/sec + 133 CPU migrations # 0.000 M/sec + 235724 pagefaults # 0.029 M/sec + 24821162526 CPU cycles # 3057.784 M/sec + 18687303457 instructions # 2302.138 M/sec + 172158895 cache references # 21.209 M/sec + 27075259 cache misses # 3.335 M/sec - Wall-clock time elapsed: 1001.252894 msecs + Wall-clock time elapsed: 719.554352 msecs SEE ALSO -------- |