perf stat: Update help text

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-06-04 16:33:00 +02:00
parent edc52deac6
commit 20c84e959e

View file

@ -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
--------