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| author | Arnaldo Carvalho de Melo | 2017-10-26 15:30:20 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2017-10-27 14:10:10 +0200 |
| commit | a14390fde64e862c4fe8b92ecb293ee4b12d5bfe (patch) | |
| tree | 736cf2a2e5ef26d6dc948578fdf444829aed9370 /tools/perf/Documentation | |
| parent | perf evsel: Restore evsel->priv as a tool private area (diff) | |
| download | kernel-qcow2-linux-a14390fde64e862c4fe8b92ecb293ee4b12d5bfe.tar.gz kernel-qcow2-linux-a14390fde64e862c4fe8b92ecb293ee4b12d5bfe.tar.xz kernel-qcow2-linux-a14390fde64e862c4fe8b92ecb293ee4b12d5bfe.zip | |
perf script: Allow creating per-event dump files
Introduce a new option to dump trace output to files named by the
monitored events and update perf-script documentation accordingly.
Shown below is output of perf script command with the newly introduced
option.
$ perf record -e cycles -e cs -ag -- sleep 1
$ perf script --per-event-dump
$ ls
perf.data.cycles.dump perf.data.cs.dump
Without per-event-dump support, drawing flamegraphs for different events
would require post processing to separate events. You can monitor only
one event at a time if you want to get flamegraphs for different events.
Using this option, you can get the trace output files named by the
monitored events, and could draw flamegraphs according to the event's
name.
Based-on-a-patch-by: yuzhoujian <yuzhoujian@didichuxing.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1508921599-10832-3-git-send-email-yuzhoujian@didichuxing.com
Link: http://lkml.kernel.org/n/tip-8ngzsjdhgiovkupl3r5yy570@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-script.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 25e677344728..2811fcf684cb 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -325,6 +325,10 @@ include::itrace.txt[] Set the maximum number of program blocks to print with brstackasm for each sample. +--per-event-dump:: + Create per event files with a "perf.data.EVENT.dump" name instead of + printing to stdout, useful, for instance, for generating flamegraphs. + --inline:: If a callgraph address belongs to an inlined function, the inline stack will be printed. Each entry has function name and file/line. Enabled by |