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Date: Wed, 17 Mar 2021 15:02:05 +0800
From: Jin Yao <yao.jin@...ux.intel.com>
To: acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc: Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
kan.liang@...el.com, yao.jin@...el.com,
Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v2] perf stat: Align CSV output for summary mode
perf-stat has supported the summary mode. But the summary
lines break the CSV output so it's hard for scripts to parse
the result.
Before:
# perf stat -x, -I1000 --interval-count 1 --summary
1.001323097,8013.48,msec,cpu-clock,8013483384,100.00,8.013,CPUs utilized
1.001323097,270,,context-switches,8013513297,100.00,0.034,K/sec
1.001323097,13,,cpu-migrations,8013530032,100.00,0.002,K/sec
1.001323097,184,,page-faults,8013546992,100.00,0.023,K/sec
1.001323097,20574191,,cycles,8013551506,100.00,0.003,GHz
1.001323097,10562267,,instructions,8013564958,100.00,0.51,insn per cycle
1.001323097,2019244,,branches,8013575673,100.00,0.252,M/sec
1.001323097,106152,,branch-misses,8013585776,100.00,5.26,of all branches
8013.48,msec,cpu-clock,8013483384,100.00,7.984,CPUs utilized
270,,context-switches,8013513297,100.00,0.034,K/sec
13,,cpu-migrations,8013530032,100.00,0.002,K/sec
184,,page-faults,8013546992,100.00,0.023,K/sec
20574191,,cycles,8013551506,100.00,0.003,GHz
10562267,,instructions,8013564958,100.00,0.51,insn per cycle
2019244,,branches,8013575673,100.00,0.252,M/sec
106152,,branch-misses,8013585776,100.00,5.26,of all branches
The summary line loses the timestamp column, which breaks the
CVS output.
We add a column at the original 'timestamp' position and it just says
'summary' for the summary line.
After:
# perf stat -x, -I1000 --interval-count 1 --summary
1.001196053,8012.72,msec,cpu-clock,8012722903,100.00,8.013,CPUs utilized
1.001196053,218,,context-switches,8012753271,100.00,0.027,K/sec
1.001196053,9,,cpu-migrations,8012769767,100.00,0.001,K/sec
1.001196053,0,,page-faults,8012786257,100.00,0.000,K/sec
1.001196053,15004518,,cycles,8012790637,100.00,0.002,GHz
1.001196053,7954691,,instructions,8012804027,100.00,0.53,insn per cycle
1.001196053,1590259,,branches,8012814766,100.00,0.198,M/sec
1.001196053,82601,,branch-misses,8012824365,100.00,5.19,of all branches
summary,8012.72,msec,cpu-clock,8012722903,100.00,7.986,CPUs utilized
summary,218,,context-switches,8012753271,100.00,0.027,K/sec
summary,9,,cpu-migrations,8012769767,100.00,0.001,K/sec
summary,0,,page-faults,8012786257,100.00,0.000,K/sec
summary,15004518,,cycles,8012790637,100.00,0.002,GHz
summary,7954691,,instructions,8012804027,100.00,0.53,insn per cycle
summary,1590259,,branches,8012814766,100.00,0.198,M/sec
summary,82601,,branch-misses,8012824365,100.00,5.19,of all branches
Now it's easy for script to analyse the summary lines.
Of course, we also consider not to break possible existing scripts which
have fixed the broken CVS format, we provide a optiton '--no-cvs-summary'
to keep original output.
# perf stat -x, -I1000 --interval-count 1 --summary --no-cvs-summary
1.001213261,8012.67,msec,cpu-clock,8012672327,100.00,8.013,CPUs utilized
1.001213261,197,,context-switches,8012703742,100.00,24.586,/sec
1.001213261,9,,cpu-migrations,8012720902,100.00,1.123,/sec
1.001213261,644,,page-faults,8012738266,100.00,80.373,/sec
1.001213261,18350698,,cycles,8012744109,100.00,0.002,GHz
1.001213261,12745021,,instructions,8012759001,100.00,0.69,insn per cycle
1.001213261,2458033,,branches,8012770864,100.00,306.768,K/sec
1.001213261,102107,,branch-misses,8012781751,100.00,4.15,of all branches
8012.67,msec,cpu-clock,8012672327,100.00,7.985,CPUs utilized
197,,context-switches,8012703742,100.00,24.586,/sec
9,,cpu-migrations,8012720902,100.00,1.123,/sec
644,,page-faults,8012738266,100.00,80.373,/sec
18350698,,cycles,8012744109,100.00,0.002,GHz
12745021,,instructions,8012759001,100.00,0.69,insn per cycle
2458033,,branches,8012770864,100.00,306.768,K/sec
102107,,branch-misses,8012781751,100.00,4.15,of all branches
This option can be enabled in perf config by setting the variable
'stat.no-cvs-summary'.
# perf config stat.no-cvs-summary=true
# perf config -l
stat.no-cvs-summary=true
# perf stat -x, -I1000 --interval-count 1 --summary
1.001330198,8013.28,msec,cpu-clock,8013279201,100.00,8.013,CPUs utilized
1.001330198,205,,context-switches,8013308394,100.00,25.583,/sec
1.001330198,10,,cpu-migrations,8013324681,100.00,1.248,/sec
1.001330198,0,,page-faults,8013340926,100.00,0.000,/sec
1.001330198,8027742,,cycles,8013344503,100.00,0.001,GHz
1.001330198,2871717,,instructions,8013356501,100.00,0.36,insn per cycle
1.001330198,553564,,branches,8013366204,100.00,69.081,K/sec
1.001330198,54021,,branch-misses,8013375952,100.00,9.76,of all branches
8013.28,msec,cpu-clock,8013279201,100.00,7.985,CPUs utilized
205,,context-switches,8013308394,100.00,25.583,/sec
10,,cpu-migrations,8013324681,100.00,1.248,/sec
0,,page-faults,8013340926,100.00,0.000,/sec
8027742,,cycles,8013344503,100.00,0.001,GHz
2871717,,instructions,8013356501,100.00,0.36,insn per cycle
553564,,branches,8013366204,100.00,69.081,K/sec
54021,,branch-misses,8013375952,100.00,9.76,of all branches
Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
---
v2:
- Add new option '--no-cvs-summary'.
- Add perf config variable 'stat.no-cvs-summary'.
tools/perf/Documentation/perf-stat.txt | 9 +++++++++
tools/perf/builtin-stat.c | 7 +++++++
tools/perf/util/config.c | 3 +++
tools/perf/util/stat-display.c | 6 ++++++
tools/perf/util/stat.h | 2 ++
5 files changed, 27 insertions(+)
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 3055aad38d46..854597e70406 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -471,6 +471,15 @@ convenient for post processing.
--summary::
Print summary for interval mode (-I).
+--no-cvs-summary::
+Don't print 'summary' at the first column for CVS summary output.
+This option must be used with -x and --summary.
+
+This option can be enabled in perf config by setting the variable
+'stat.no-cvs-summary'.
+
+$ perf config stat.no-cvs-summary=true
+
EXAMPLES
--------
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 2e2e4a8345ea..3823dd5fd6e8 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1083,6 +1083,11 @@ void perf_stat__set_big_num(int set)
stat_config.big_num = (set != 0);
}
+void perf_stat__set_no_cvs_summary(int set)
+{
+ stat_config.no_cvs_summary = (set != 0);
+}
+
static int stat__set_big_num(const struct option *opt __maybe_unused,
const char *s __maybe_unused, int unset)
{
@@ -1235,6 +1240,8 @@ static struct option stat_options[] = {
"threads of same physical core"),
OPT_BOOLEAN(0, "summary", &stat_config.summary,
"print summary for interval mode"),
+ OPT_BOOLEAN(0, "no-cvs-summary", &stat_config.no_cvs_summary,
+ "don't print 'summary' for CVS summary output"),
OPT_BOOLEAN(0, "quiet", &stat_config.quiet,
"don't print output (useful with record)"),
#ifdef HAVE_LIBPFM
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 6984c77068a3..dbf585460791 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -457,6 +457,9 @@ static int perf_stat_config(const char *var, const char *value)
if (!strcmp(var, "stat.big-num"))
perf_stat__set_big_num(perf_config_bool(var, value));
+ if (!strcmp(var, "stat.no-cvs-summary"))
+ perf_stat__set_no_cvs_summary(perf_config_bool(var, value));
+
/* Add other config variables here. */
return 0;
}
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 7f09cdaf5b60..2e7fec0bd8f3 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -439,6 +439,12 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
if (counter->cgrp)
os.nfields++;
}
+
+ if (!config->no_cvs_summary && config->csv_output &&
+ config->summary && !config->interval) {
+ fprintf(config->output, "%16s%s", "summary", config->csv_sep);
+ }
+
if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
if (config->metric_only) {
pm(config, &os, NULL, "", "", 0);
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index 41107b8deac5..def0cdc84133 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -128,6 +128,7 @@ struct perf_stat_config {
bool all_user;
bool percore_show_thread;
bool summary;
+ bool no_cvs_summary;
bool metric_no_group;
bool metric_no_merge;
bool stop_read_counter;
@@ -160,6 +161,7 @@ struct perf_stat_config {
};
void perf_stat__set_big_num(int set);
+void perf_stat__set_no_cvs_summary(int set);
void update_stats(struct stats *stats, u64 val);
double avg_stats(struct stats *stats);
--
2.17.1
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