Messages in this thread |  | | From | Stephane Eranian <> | Subject | [PATCH 0/2] perf stat: add interval counter printing | Date | Thu, 17 Jan 2013 16:24:45 +0100 |
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This small patchset extends perf stat with the -T option.
The -T option enables interval printing. It expects an interval duration in milliseconds. Minimum is 100ms. Once, activated perf stat prints events deltas since last printout. All modes are supported.
$ perf stat -T 1000 -e cycles noploop 10 noploop for 10 seconds 1.000086918 2385155642 cycles # 0.000 GHz 2.000267937 2392279774 cycles # 0.000 GHz 3.000385400 2390971450 cycles # 0.000 GHz 4.000504408 2390996752 cycles # 0.000 GHz 5.000626878 2390853097 cycles # 0.000 GHz
The output format makes it easy to feed into a plotting program such as gnuplot when the -T option is used in combination with the -x option:
$ perf stat -x, -T 1000 -e cycles noploop 10 noploop for 10 seconds 1.000084113,2378775498,cycles 2.000245798,2391056897,cycles 3.000354445,2392089414,cycles 4.000459115,2390936603,cycles 5.000565341,2392108173,cycles
The first patch adds the code to keep previous counts. The second is the actual extension of perf stat.
Signed-off-by: Stephane Eranian <eranian@google.com>
Stephane Eranian (2): perf tools: add evsel prev_raw_count field perf stat: add interval printing
tools/perf/Documentation/perf-stat.txt | 3 + tools/perf/builtin-stat.c | 156 ++++++++++++++++++++++++++++---- tools/perf/util/evsel.c | 21 +++++ tools/perf/util/evsel.h | 1 + 4 files changed, 165 insertions(+), 16 deletions(-)
-- 1.7.9.5
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