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| author | Ingo Molnar <mingo@elte.hu> | 2009-09-13 18:15:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-14 15:45:11 +0200 |
| commit | ea57c4f5203d82c7844c54cdef54e972cf4e9d1f (patch) | |
| tree | 13eb76a07480adbfe1bcabd25cde7cdd12907ddb /tools/perf/util | |
| parent | aa1ab9d26ae9fe2566a9036e3cb83e7d555b3987 (diff) | |
| download | linux-ea57c4f5203d82c7844c54cdef54e972cf4e9d1f.tar.bz2 | |
perf tools: Implement counter output multiplexing
Finish the -M/--multiplex option implementation:
- separate it out from group_fd
- correctly set it via the ioctl and dont mmap counters that
are multiplexed
- modify the perf record event loop to deal with buffer-less
counters.
- remove the -g option from perf sched record
- account for unordered events in perf sched latency
- (add -f to perf sched record to ease measurements)
- skip idle threads (pid==0) in latency output
The result is better latency output by 'perf sched latency':
-----------------------------------------------------------------------------------
Task | Runtime ms | Switches | Average delay ms | Maximum delay ms |
-----------------------------------------------------------------------------------
ksoftirqd/8 | 0.071 ms | 2 | avg: 0.458 ms | max: 0.913 ms |
at-spi-registry | 0.609 ms | 19 | avg: 0.013 ms | max: 0.023 ms |
perf | 3.316 ms | 16 | avg: 0.013 ms | max: 0.054 ms |
Xorg | 0.392 ms | 19 | avg: 0.011 ms | max: 0.018 ms |
sleep | 0.537 ms | 2 | avg: 0.009 ms | max: 0.009 ms |
-----------------------------------------------------------------------------------
TOTAL: | 4.925 ms | 58 |
---------------------------------------------
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>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/trace-event-parse.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index 64d6e302751a..f6a8437141c8 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -2722,8 +2722,10 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs, type = trace_parse_common_type(data); event = trace_find_event(type); - if (!event) - die("ug! no event found for type %d", type); + if (!event) { + printf("ug! no event found for type %d\n", type); + return; + } pid = parse_common_pid(data); |