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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-14 18:15:18 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-14 19:46:57 -0300 |
| commit | 6125cc8dac432948a31df4d4ac20dd2d4f8c6c27 (patch) | |
| tree | 2ce2dc50335fc524b1041c9ea918c21467bb7ff2 /tools/perf/Documentation/perf-script.txt | |
| parent | d327e60cfae2201bcdee5aeb9b5a42e3988b184f (diff) | |
| download | lwn-6125cc8dac432948a31df4d4ac20dd2d4f8c6c27.tar.gz lwn-6125cc8dac432948a31df4d4ac20dd2d4f8c6c27.zip | |
perf script: Add --max-stack knob
Works just like with 'perf report'. In some cases we may want to have
more than 127 entries, the default maximum.
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/n/tip-mqkz2p5ok2978gztb0vsnocc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-script.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-script.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 22ef3933342a..4fc44c75263f 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -259,6 +259,16 @@ include::itrace.txt[] --full-source-path:: Show the full path for source files for srcline output. +--max-stack:: + Set the stack depth limit when parsing the callchain, anything + beyond the specified depth will be ignored. This is a trade-off + between information loss and faster processing especially for + workloads that can have a very long callchain stack. + Note that when using the --itrace option the synthesized callchain size + will override this value if the synthesized callchain size is bigger. + + Default: 127 + --ns:: Use 9 decimal places when displaying time (i.e. show the nanoseconds) |