path: root/tools/perf/Documentation/perf-script.txt
diff options
authorArnaldo Carvalho de Melo <>2016-04-14 18:15:18 -0300
committerArnaldo Carvalho de Melo <>2016-04-14 19:46:57 -0300
commit6125cc8dac432948a31df4d4ac20dd2d4f8c6c27 (patch)
tree2ce2dc50335fc524b1041c9ea918c21467bb7ff2 /tools/perf/Documentation/perf-script.txt
parentd327e60cfae2201bcdee5aeb9b5a42e3988b184f (diff)
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 <> Cc: David Ahern <> Cc: Jiri Olsa <> Cc: Namhyung Kim <> Cc: Wang Nan <> Link: Signed-off-by: Arnaldo Carvalho de Melo <>
Diffstat (limited to 'tools/perf/Documentation/perf-script.txt')
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[]
Show the full path for source files for srcline output.
+ 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
Use 9 decimal places when displaying time (i.e. show the nanoseconds)