Messages in this thread | | | From | Jin Yao <> | Subject | [PATCH v2 0/2] perf stat: Support overall statistics for interval mode | Date | Sat, 2 May 2020 10:07:03 +0800 |
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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
v2: --- Rebase to perf/core branch
Jin Yao (2): perf evsel: Create counts for collecting summary data perf stat: Report summary for interval mode
tools/perf/builtin-stat.c | 14 ++++++- tools/perf/util/evsel.c | 10 ++++- tools/perf/util/evsel.h | 1 + tools/perf/util/stat.c | 77 +++++++++++++++++++++++++++++++++++++++ tools/perf/util/stat.h | 5 +++ 5 files changed, 103 insertions(+), 4 deletions(-)
-- 2.17.1
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