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Message-ID: <4cf67197.41e9d80a.7d37.08aa@mx.google.com>
Date: Wed, 1 Dec 2010 17:00:05 +0200
From: Stephane Eranian <eranian@...gle.com>
To: linux-kernel@...r.kernel.org
Cc: peterz@...radead.org, mingo@...e.hu, paulus@...ba.org,
davem@...emloft.net, fweisbec@...il.com,
perfmon2-devel@...ts.sf.net, eranian@...il.com, eranian@...gle.com,
robert.richter@....com, acme@...hat.com
Subject: [PATCH] perf: add csv-style output to perf stat
This patch adds an option (-x) to print counts using a CSV-style output.
This makes it very easy to import counts directly into your favorite
spreadsheet without having to write scripts.
Example:
$ perf stat -x -a -- sleep 1
4009.795961,task-clock-msecs
20,context-switches
2,CPU-migrations
190,page-faults
9595983335,cycles
3492776872,instructions
872718098,branches
29798,branch-misses
44646,cache-references
5026,cache-misses
Signed-off-by: Stephane Eranian <eranian@...gle.com>
---
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index c405bca..717c11d 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -58,6 +58,11 @@ to activate system-wide monitoring. Default is to count on all CPUs.
Do not aggregate counts across all monitored CPUs in system-wide mode (-a).
This option is only valid in system-wide mode.
+-x::
+--csv::
+print counts using a CSV-style (comma separated) output to make it easy to
+import directly into spreadsheets.
+
EXAMPLES
--------
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 970a7f2..325608d 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -76,6 +76,7 @@ static int run_count = 1;
static bool no_inherit = false;
static bool scale = true;
static bool no_aggr = false;
+static bool csv_output = false;
static pid_t target_pid = -1;
static pid_t target_tid = -1;
static pid_t *all_tids = NULL;
@@ -84,6 +85,7 @@ static pid_t child_pid = -1;
static bool null_run = false;
static bool big_num = false;
static const char *cpu_list;
+static const char *sep;
static int *fd[MAX_NR_CPUS][MAX_COUNTERS];
@@ -449,12 +451,16 @@ static void print_noise(int counter, double avg)
static void nsec_printout(int cpu, int counter, double avg)
{
double msecs = avg / 1e6;
+ char cpustr[16] = { '\0', };
+ const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-24s";
if (no_aggr)
- fprintf(stderr, "CPU%-4d %18.6f %-24s",
- cpumap[cpu], msecs, event_name(counter));
- else
- fprintf(stderr, " %18.6f %-24s", msecs, event_name(counter));
+ sprintf(cpustr, "CPU%-4d%s", cpumap[cpu], sep);
+
+ fprintf(stderr, fmt, cpustr, msecs, sep, event_name(counter));
+
+ if (csv_output)
+ return;
if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) {
fprintf(stderr, " # %10.3f CPUs ",
@@ -466,18 +472,24 @@ static void abs_printout(int cpu, int counter, double avg)
{
double total, ratio = 0.0;
char cpustr[16] = { '\0', };
+ const char *fmt;
+
+ if (csv_output)
+ fmt = "%s%.0f%s%s";
+ else if (big_num)
+ fmt = "%s%'18.0f%s%-24s";
+ else
+ fmt = "%s%18.0f%s%-24s";
if (no_aggr)
- sprintf(cpustr, "CPU%-4d", cpumap[cpu]);
+ sprintf(cpustr, "CPU%-4d%s", cpumap[cpu], sep);
else
cpu = 0;
- if (big_num)
- fprintf(stderr, "%s %'18.0f %-24s",
- cpustr, avg, event_name(counter));
- else
- fprintf(stderr, "%s %18.0f %-24s",
- cpustr, avg, event_name(counter));
+ fprintf(stderr, fmt, cpustr, avg, sep, event_name(counter));
+
+ if (csv_output)
+ return;
if (MATCH_EVENT(HARDWARE, HW_INSTRUCTIONS, counter)) {
total = avg_stats(&runtime_cycles_stats[cpu]);
@@ -515,8 +527,8 @@ static void print_counter_aggr(int counter)
int scaled = event_scaled[counter];
if (scaled == -1) {
- fprintf(stderr, " %18s %-24s\n",
- "<not counted>", event_name(counter));
+ fprintf(stderr, "%18s%s%-24s\n",
+ "<not counted>", sep, event_name(counter));
return;
}
@@ -525,6 +537,11 @@ static void print_counter_aggr(int counter)
else
abs_printout(-1, counter, avg);
+ if (csv_output) {
+ fputc('\n', stderr);
+ return;
+ }
+
print_noise(counter, avg);
if (scaled) {
@@ -554,8 +571,10 @@ static void print_counter(int counter)
ena = cpu_counts[cpu][counter].ena;
run = cpu_counts[cpu][counter].run;
if (run == 0 || ena == 0) {
- fprintf(stderr, "CPU%-4d %18s %-24s", cpumap[cpu],
- "<not counted>", event_name(counter));
+ fprintf(stderr, "CPU%-4d%s%18s%s%-24s",
+ cpumap[cpu], sep,
+ "<not counted>", sep,
+ event_name(counter));
fprintf(stderr, "\n");
continue;
@@ -566,11 +585,13 @@ static void print_counter(int counter)
else
abs_printout(cpu, counter, val);
- print_noise(counter, 1.0);
+ if (!csv_output) {
+ print_noise(counter, 1.0);
- if (run != ena) {
- fprintf(stderr, " (scaled from %.2f%%)",
+ if (run != ena) {
+ fprintf(stderr, " (scaled from %.2f%%)",
100.0 * run / ena);
+ }
}
fprintf(stderr, "\n");
}
@@ -582,21 +603,23 @@ static void print_stat(int argc, const char **argv)
fflush(stdout);
- fprintf(stderr, "\n");
- fprintf(stderr, " Performance counter stats for ");
- if(target_pid == -1 && target_tid == -1) {
- fprintf(stderr, "\'%s", argv[0]);
- for (i = 1; i < argc; i++)
- fprintf(stderr, " %s", argv[i]);
- } else if (target_pid != -1)
- fprintf(stderr, "process id \'%d", target_pid);
- else
- fprintf(stderr, "thread id \'%d", target_tid);
+ if (!csv_output) {
+ fprintf(stderr, "\n");
+ fprintf(stderr, " Performance counter stats for ");
+ if(target_pid == -1 && target_tid == -1) {
+ fprintf(stderr, "\'%s", argv[0]);
+ for (i = 1; i < argc; i++)
+ fprintf(stderr, " %s", argv[i]);
+ } else if (target_pid != -1)
+ fprintf(stderr, "process id \'%d", target_pid);
+ else
+ fprintf(stderr, "thread id \'%d", target_tid);
- fprintf(stderr, "\'");
- if (run_count > 1)
- fprintf(stderr, " (%d runs)", run_count);
- fprintf(stderr, ":\n\n");
+ fprintf(stderr, "\'");
+ if (run_count > 1)
+ fprintf(stderr, " (%d runs)", run_count);
+ fprintf(stderr, ":\n\n");
+ }
if (no_aggr) {
for (counter = 0; counter < nr_counters; counter++)
@@ -606,15 +629,17 @@ static void print_stat(int argc, const char **argv)
print_counter_aggr(counter);
}
- fprintf(stderr, "\n");
- fprintf(stderr, " %18.9f seconds time elapsed",
- avg_stats(&walltime_nsecs_stats)/1e9);
- if (run_count > 1) {
- fprintf(stderr, " ( +- %7.3f%% )",
+ if (!csv_output) {
+ fprintf(stderr, "\n");
+ fprintf(stderr, " %18.9f seconds time elapsed",
+ avg_stats(&walltime_nsecs_stats)/1e9);
+ if (run_count > 1) {
+ fprintf(stderr, " ( +- %7.3f%% )",
100*stddev_stats(&walltime_nsecs_stats) /
avg_stats(&walltime_nsecs_stats));
+ }
+ fprintf(stderr, "\n\n");
}
- fprintf(stderr, "\n\n");
}
static volatile int signr = -1;
@@ -670,6 +695,8 @@ static const struct option options[] = {
"list of cpus to monitor in system-wide"),
OPT_BOOLEAN('A', "no-aggr", &no_aggr,
"disable CPU count aggregation"),
+ OPT_BOOLEAN('x', "csv", &csv_output,
+ "print counts in CSV format"),
OPT_END()
};
@@ -682,6 +709,17 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
argc = parse_options(argc, argv, options, stat_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
+
+ sep = csv_output ? "," : " ";
+
+ /*
+ * let the spreadsheet do the pretty-printing
+ */
+ if (csv_output && big_num) {
+ fprintf(stderr, "-B option not supported with -x\n");
+ usage_with_options(stat_usage, options);
+ }
+
if (!argc && target_pid == -1 && target_tid == -1)
usage_with_options(stat_usage, options);
if (run_count <= 0)
--
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