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Groups > linux.kernel > #1291639
| From | David Ahern <dsahern@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC/PATCHSET 0/6] perf tools: Support dynamic sort keys for tracepoints (v1) |
| Date | 2015-12-14 23:40 +0100 |
| Message-ID | <qFJWH-3Ss-57@gated-at.bofh.it> (permalink) |
| References | <qFDxU-83l-1@gated-at.bofh.it> <qFFq3-Q8-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 12/14/15 10:47 AM, Arnaldo Carvalho de Melo wrote: >> With dynamic sort keys, you can use <event.field> as a sort key. Those >> dynamic keys are checked and created on demand. For instance, below is >> to sort by next_pid field on the same data file. >> >> $ perf report -s comm,sched:sched_switch.next_pid --stdio >> ... >> # Overhead Command next_pid >> # ........ ............... .......... >> # >> 21.23% transmission-gt 0 >> 20.86% swapper 17773 >> 6.62% netctl-auto 0 >> 5.25% swapper 109 >> 5.21% kworker/0:1H 0 >> 1.98% Xephyr 0 >> 1.98% swapper 6524 >> 1.98% swapper 27478 >> 1.37% swapper 27476 >> 1.17% swapper 233 >> >> Multiple dynamic sort keys are also supported: >> >> $ perf report -s comm,sched:sched_switch.next_pid,sched:sched_switch.next_comm --stdio >> ... >> # Overhead Command next_pid next_comm >> # ........ ............... .......... ................ >> # >> 20.86% swapper 17773 transmission-gt >> 9.64% transmission-gt 0 swapper/0 >> 9.16% transmission-gt 0 swapper/2 >> 5.25% swapper 109 kworker/0:1H >> 5.21% kworker/0:1H 0 swapper/0 >> 2.14% netctl-auto 0 swapper/2 >> 1.98% netctl-auto 0 swapper/0 >> 1.98% swapper 6524 Xephyr >> 1.98% swapper 27478 netctl-auto >> 1.78% transmission-gt 0 swapper/3 >> 1.53% Xephyr 0 swapper/0 >> 1.29% netctl-auto 0 swapper/1 >> 1.29% swapper 27476 netctl-auto >> 1.21% netctl-auto 0 swapper/3 >> 1.17% swapper 233 irq/33-iwlwifi >> >> Note that pid 0 exists for each cpu so have comm of 'swapper/N'. > >> This is available on 'perf/dynamic-sort-v1' branch in my tree >> >> git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git >> >> Any comments are welcome, thanks! >> Namhyung > > I'll look at the patches for style, but the idea is so nice and natural > I thought about blind merging it :-) > yes, that is a cool feature. For scheduling tracepoints the analysis could be added to perf-sched to ease the burden of the command line syntax. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[RFC/PATCHSET 0/6] perf tools: Support dynamic sort keys for tracepoints (v1) Namhyung Kim <namhyung@kernel.org> - 2015-12-14 16:50 +0100
[PATCH 1/6] perf hist: Pass struct sample to __hists__add_entry() Namhyung Kim <namhyung@kernel.org> - 2015-12-14 16:50 +0100
[PATCH 3/6] tools lib traceevent: Factor out and export print_event_field() Namhyung Kim <namhyung@kernel.org> - 2015-12-14 16:50 +0100
[PATCH 4/6] perf tools: Pass evlist to setup_sorting() Namhyung Kim <namhyung@kernel.org> - 2015-12-14 16:50 +0100
[PATCH 2/6] perf hist: Save raw_data/size for tracepoint events Namhyung Kim <namhyung@kernel.org> - 2015-12-14 16:50 +0100
Re: [RFC/PATCHSET 0/6] perf tools: Support dynamic sort keys for tracepoints (v1) Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-14 18:50 +0100
Re: [RFC/PATCHSET 0/6] perf tools: Support dynamic sort keys for tracepoints (v1) David Ahern <dsahern@gmail.com> - 2015-12-14 23:40 +0100
Re: [RFC/PATCHSET 0/6] perf tools: Support dynamic sort keys for tracepoints (v1) Namhyung Kim <namhyung@kernel.org> - 2015-12-15 02:50 +0100
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