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| author | Ingo Molnar <mingo@elte.hu> | 2009-06-07 17:06:46 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-07 17:08:59 +0200 |
| commit | 743ee1f80434138495bbb95ffb897acf46b51d54 (patch) | |
| tree | 90e86af77e39609922d88746aa50c4075f724be7 /lib/dynamic_debug.c | |
| parent | perf top: Wait for a minimal set of events before reading first snapshot (diff) | |
| download | linux-743ee1f80434138495bbb95ffb897acf46b51d54.tar.xz linux-743ee1f80434138495bbb95ffb897acf46b51d54.zip | |
perf stat: Continue even on counter creation error
Before:
$ perf stat ~/hackbench 5
error: syscall returned with -1 (No such device)
After:
$ perf stat ~/hackbench 5
Time: 1.640
Performance counter stats for '/home/mingo/hackbench 5':
6524.570382 task-clock-ticks # 3.838 CPU utilization factor
35704 context-switches # 0.005 M/sec
191 CPU-migrations # 0.000 M/sec
8958 page-faults # 0.001 M/sec
<not counted> cycles
<not counted> instructions
<not counted> cache-references
<not counted> cache-misses
Wall-clock time elapsed: 1699.999995 msecs
Also add -v (--verbose) option to allow the printing of failed
counter opens.
Plus dont print 'inf' if wall-time is zero (due to jiffies granularity),
instead skip the printing of the CPU utilization factor.
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>
Diffstat (limited to 'lib/dynamic_debug.c')
0 files changed, 0 insertions, 0 deletions