diff options
Diffstat (limited to 'tools/perf/Documentation/perf-data.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-data.txt | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-data.txt b/tools/perf/Documentation/perf-data.txt index 417bf17e265c..20f178d61ed7 100644 --- a/tools/perf/Documentation/perf-data.txt +++ b/tools/perf/Documentation/perf-data.txt @@ -40,6 +40,34 @@ OPTIONS for 'convert' --force:: Don't complain, do it. +--time:: + Only convert samples within given time window: <start>,<stop>. Times + have the format seconds.nanoseconds. If start is not given (i.e. time + string is ',x.y') then analysis starts at the beginning of the file. If + stop time is not given (i.e. time string is 'x.y,') then analysis goes + to end of file. Multiple ranges can be separated by spaces, which + requires the argument to be quoted e.g. --time "1234.567,1234.789 1235," + + Also support time percent with multiple time ranges. Time string is + 'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'. + + For example: + Select the second 10% time slice: + + perf data convert --to-json out.json --time 10%/2 + + Select from 0% to 10% time slice: + + perf data convert --to-json out.json --time 0%-10% + + Select the first and second 10% time slices: + + perf data convert --to-json out.json --time 10%/1,10%/2 + + Select from 0% to 10% and 30% to 40% slices: + + perf data convert --to-json out.json --time 0%-10%,30%-40% + -v:: --verbose:: Be more verbose (show counter open errors, etc). |