Messages in this thread | | | Date | Wed, 20 May 2020 12:54:06 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH v6 0/5] perf stat: Support overall statistics for interval mode |
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On Wed, May 20, 2020 at 12:27:32PM +0800, Jin Yao wrote: > Currently perf-stat supports to print counts at regular interval (-I), > but it's not very easy for user to get the overall statistics. > > With this patchset, it supports to report the summary at the end of > interval output. > > For example, > > root@kbl-ppc:~# perf stat -e cycles -I1000 --interval-count 2 > # time counts unit events > 1.000412064 2,281,114 cycles > 2.001383658 2,547,880 cycles > > Performance counter stats for 'system wide': > > 4,828,994 cycles > > 2.002860349 seconds time elapsed > > root@kbl-ppc:~# perf stat -e cycles,instructions -I1000 --interval-count 2 > # time counts unit events > 1.000389902 1,536,093 cycles > 1.000389902 420,226 instructions # 0.27 insn per cycle > 2.001433453 2,213,952 cycles > 2.001433453 735,465 instructions # 0.33 insn per cycle > > Performance counter stats for 'system wide': > > 3,750,045 cycles > 1,155,691 instructions # 0.31 insn per cycle > > 2.003023361 seconds time elapsed > > root@kbl-ppc:~# perf stat -M CPI,IPC -I1000 --interval-count 2 > # time counts unit events > 1.000435121 905,303 inst_retired.any # 2.9 CPI > 1.000435121 2,663,333 cycles > 1.000435121 914,702 inst_retired.any # 0.3 IPC > 1.000435121 2,676,559 cpu_clk_unhalted.thread > 2.001615941 1,951,092 inst_retired.any # 1.8 CPI > 2.001615941 3,551,357 cycles > 2.001615941 1,950,837 inst_retired.any # 0.5 IPC > 2.001615941 3,551,044 cpu_clk_unhalted.thread > > Performance counter stats for 'system wide': > > 2,856,395 inst_retired.any # 2.2 CPI > 6,214,690 cycles > 2,865,539 inst_retired.any # 0.5 IPC > 6,227,603 cpu_clk_unhalted.thread > > 2.003403078 seconds time elapsed > > v6: > --- > 1. Add comments in perf_evlist__save_aggr_prev_raw_counts. > 2. Move init_stats(&walltime_nsecs_stats) under interval condition check. > > Following patches are changed in v6. > perf stat: Save aggr value to first member of prev_raw_counts > perf stat: Report summary for interval mode
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
thanks, jirka
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