Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Date | Thu, 26 Mar 2020 11:33:55 -0300 | Subject | Re: [PATCH] perf script: introduce deltatime option |
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Em Tue, Feb 04, 2020 at 06:37:09PM +0100, Hagen Paul Pfeifer escreveu: > For some kind of analysis a deltatime output is more human friendly and reduce > the cognitive load for further analysis. > > The following output demonstrate the new option "deltatime": calculate > the time difference in relation to the previous event. > > $ perf script --deltatime > test 2525 [001] 0.000000: sdt_libev:ev_add: (5635e72a5ebd) > test 2525 [001] 0.000091: sdt_libev:epoll_wait_enter: (5635e72a76a9) > test 2525 [001] 1.000051: sdt_libev:epoll_wait_return: (5635e72a772e) arg1=1 > test 2525 [001] 0.000685: sdt_libev:ev_add: (5635e72a5ebd) > test 2525 [001] 0.000048: sdt_libev:epoll_wait_enter: (5635e72a76a9) > test 2525 [001] 1.000104: sdt_libev:epoll_wait_return: (5635e72a772e) arg1=1 > test 2525 [001] 0.003895: sdt_libev:epoll_wait_enter: (5635e72a76a9) > test 2525 [001] 0.996034: sdt_libev:epoll_wait_return: (5635e72a772e) arg1=1 > test 2525 [001] 0.000058: sdt_libev:epoll_wait_enter: (5635e72a76a9) > test 2525 [001] 1.000004: sdt_libev:epoll_wait_return: (5635e72a772e) arg1=1 > test 2525 [001] 0.000064: sdt_libev:epoll_wait_enter: (5635e72a76a9) > test 2525 [001] 0.999934: sdt_libev:epoll_wait_return: (5635e72a772e) arg1=1 > test 2525 [001] 0.000056: sdt_libev:epoll_wait_enter: (5635e72a76a9) > test 2525 [001] 0.999930: sdt_libev:epoll_wait_return: (5635e72a772e) arg1=1
You forgot to update the man page, I did it, tested and applied, thanks.
- Arnaldo
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index db6a36aac47e..4af255bb0977 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -390,6 +390,9 @@ include::itrace.txt[] --reltime:: Print time stamps relative to trace start. +--deltatime:: + Print time stamps relative to previous event. + --per-event-dump:: Create per event files with a "perf.data.EVENT.dump" name instead of printing to stdout, useful, for instance, for generating flamegraphs.
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