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Groups > linux.kernel > #1306027
| From | Namhyung Kim <namhyung@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 1/4] perf tools: Add more usage tips |
| Date | 2016-01-11 11:40 +0100 |
| Message-ID | <qPI3f-13k-3@gated-at.bofh.it> (permalink) |
| References | <qPf1g-6S5-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Thanks to Andi Kleen for providing useful tips. Suggested-by: Andi Kleen <andi@firstfloor.org> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- tools/perf/Documentation/tips.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tools/perf/Documentation/tips.txt b/tools/perf/Documentation/tips.txt index a1c10e360db5..e0ce9573b79b 100644 --- a/tools/perf/Documentation/tips.txt +++ b/tools/perf/Documentation/tips.txt @@ -12,3 +12,18 @@ List events using substring match: perf list <keyword> To see list of saved events and attributes: perf evlist -v Use --symfs <dir> if your symbol files are in non-standard locations To see callchains in a more compact form: perf report -g folded +Show individual samples with: perf script +Limit to show entries above 5% only: perf report --percent-limit 5 +Profiling branch (mis)predictions with: perf record -b / perf report +Treat branches as callchains: perf report --branch-history +To count events in every 1000 msec: perf stat -I 1000 +Print event counts in CSV format with: perf stat -x, +If you have debuginfo enabled, try: perf report -s sym,srcline +For memory address profiling, try: perf mem record / perf mem report +For tracepoint events, try: perf report -s trace_fields +To record callchains for each sample: perf record -g +To record every process run by an user: perf record -u <user> +Skip collecing build-id when recording: perf record -B +To change sampling frequency to 100 Hz: perf record -F 100 +See assembly instructions with percentage: perf annotate <symbol> +If you prefer Intel style assembly, try: perf annotate -M intel -- 2.6.4
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[PATCH 1/4] perf tools: Add more usage tips Namhyung Kim <namhyung@kernel.org> - 2016-01-09 11:20 +0100
[PATCH 4/4] perf tools: Fallback to srcdir/Documentation/tips.txt Namhyung Kim <namhyung@kernel.org> - 2016-01-09 11:20 +0100
Re: [PATCH 4/4] perf tools: Fallback to srcdir/Documentation/tips.txt Jiri Olsa <jolsa@redhat.com> - 2016-01-11 10:20 +0100
Re: [PATCH 4/4] perf tools: Fallback to srcdir/Documentation/tips.txt Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-12 16:40 +0100
Re: [PATCH 4/4] perf tools: Fallback to srcdir/Documentation/tips.txt Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-12 16:40 +0100
Re: [PATCH 4/4] perf tools: Fallback to srcdir/Documentation/tips.txt Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-12 16:30 +0100
[tip:perf/urgent] perf tools: Fallback to srcdir/Documentation/ tips.txt tip-bot for Namhyung Kim <tipbot@zytor.com> - 2016-01-13 10:50 +0100
Re: [PATCH 1/4] perf tools: Add more usage tips Andi Kleen <andi@firstfloor.org> - 2016-01-10 04:40 +0100
[PATCH v2 1/4] perf tools: Add more usage tips Namhyung Kim <namhyung@kernel.org> - 2016-01-11 11:40 +0100
[PATCH 5/4] perf ui/tui: Print helpline message as is Namhyung Kim <namhyung@kernel.org> - 2016-01-11 12:00 +0100
Re: [PATCH 5/4] perf ui/tui: Print helpline message as is Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-12 16:30 +0100
[tip:perf/urgent] perf ui/tui: Print helpline message as is tip-bot for Namhyung Kim <tipbot@zytor.com> - 2016-01-13 10:50 +0100
[tip:perf/urgent] perf tools: Add more usage tips tip-bot for Namhyung Kim <tipbot@zytor.com> - 2016-01-13 10:50 +0100
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