From: Jin Yao <yao.jin@linux.intel.com>
To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org,
mingo@redhat.com, alexander.shishkin@linux.intel.com
Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com,
kan.liang@intel.com, yao.jin@intel.com,
Jin Yao <yao.jin@linux.intel.com>
Subject: [PATCH v2 0/2] perf stat: Support overall statistics for interval mode
Date: Sat, 2 May 2020 10:07:03 +0800 [thread overview]
Message-ID: <20200502020705.19295-1-yao.jin@linux.intel.com> (raw)
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
next reply other threads:[~2020-05-02 2:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-02 2:07 Jin Yao [this message]
2020-05-02 2:07 ` [PATCH v2 1/2] perf evsel: Create counts for collecting summary data Jin Yao
2020-05-04 23:50 ` Jiri Olsa
2020-05-06 8:19 ` Jin, Yao
2020-05-02 2:07 ` [PATCH v2 2/2] perf stat: Report summary for interval mode Jin Yao
2020-05-04 23:41 ` Jiri Olsa
2020-05-06 10:52 ` Jin, Yao
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