Explain 'report' section's variables. 'percent-limit', 'queue-size' and 'children'.
Cc: Namhyung Kim <[email protected]> Cc: Jiri Olsa <[email protected]> Signed-off-by: Taeung Song <[email protected]> --- tools/perf/Documentation/perf-config.txt | 34 ++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index 40566af..879f037 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -372,6 +372,40 @@ call-graph.*:: This is a maximum number of lines of callchain printed for a single histogram entry. Default is 0 which means no limitation. +report.*:: + report.percent-limit:: + This one is mostly same as call-graph.threshold but works for + histogram entries. Entries have overhead lower than this percentage + will not be printed. Default is 0. If percent-limit is 10, + entries which have more than 10% of overhead will be printed only. + + report.queue-size:: + This option is to setup the maximum allocation size of internal + event queue for ordering events. Default is 0, meaning no limit. + + report.children:: + The children means that functions called from another function. + If this option is true, perf report cumulates callchains of children + and show (accumulated) total overhead as well as self overhead. + Please refer to the perf-report manual. The default is true. + + report.group:: + This option is to show event group information together. + If it is 'true', event group view can be enabled by default i.e. + + # group: {ref-cycles,cycles} + # ======== + # + # Samples: 7K of event 'anon group { ref-cycles, cycles }' + # Event count (approx.): 6876107743 + # + # Overhead Command Shared Object Symbol + # ................ ....... ................. .......................... + # + 99.84% 99.76% noploop noploop [.] main + 0.07% 0.00% noploop ld-2.15.so [.] strcmp + 0.03% 0.00% noploop [kernel.kallsyms] [k] timerqueue_del + SEE ALSO -------- linkperf:perf[1] -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
