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Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index c6f9f31b6039..b23a4012a606 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -62,6 +62,9 @@ OPTIONS like this: name=\'CPU_CLK_UNHALTED.THREAD:cmask=0x1\'. - 'aux-output': Generate AUX records instead of events. This requires that an AUX area event is also provided. + - 'aux-sample-size': Set sample size for AUX area sampling. If the + '--aux-sample' option has been used, set aux-sample-size=0 to disable + AUX area sampling for the event. See the linkperf:perf-list[1] man page for more parameters. @@ -433,6 +436,12 @@ can be specified in a string that follows this option: In Snapshot Mode trace data is captured only when signal SIGUSR2 is received and on exit if the above 'e' option is given. +--aux-sample[=OPTIONS]:: +Select AUX area sampling. At least one of the events selected by the -e option +must be an AUX area event. Samples on other events will be created containing +data from the AUX area. Optionally sample size may be specified, otherwise it +defaults to 4KiB. + --proc-map-timeout:: When processing pre-existing threads /proc/XXX/mmap, it may take a long time, because the file may be huge. A time out is needed in such cases. @@ -571,6 +580,13 @@ config terms. For example: 'cycles/overwrite/' and 'instructions/no-overwrite/'. Implies --tail-synthesize. +--kcore:: +Make a copy of /proc/kcore and place it into a directory with the perf data file. + +--max-size=<size>:: +Limit the sample data max size, <size> is expected to be a number with +appended unit character - B/K/M/G + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-list[1] |