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linux/tools/perf/util/stat-display.c
Stephane Eranian bc4da38a47 perf stat: Fix CSV mode column output for non-cgroup events 
When using the -x option, perf stat prints CSV-style output with one
event per line.  For each event, it prints the count, the unit, the
event name, the cgroup, and a bunch of other event specific fields (such
as insn per cycles).

When you use CSV-style mode, you expect a normalized output where each
event is printed with the same number of fields regardless of what it is
so it can easily be imported into a spreadsheet or parsed.

For instance, if an event does not have a unit, then print an empty
field for it.

Although this approach was implemented for the unit, it was not for the
cgroup.

When mixing cgroup and non-cgroup events, then non-cgroup events would
not show an empty field, instead the next field was printed, make
columns not line up correctly.

This patch fixes the cgroup output issues by forcing an empty field
for non-cgroup events as soon as one event has cgroup.

Before:

  <not counted> @ @cycles @foo    @ 0    @100.00@@
  2531614       @ @cycles @6420922@100.00@    @

foo cgroup lines up with time_running!

After:

  <not counted> @ @cycles @foo @0       @100.00@@
  2594834       @ @cycles @    @5287372 @100.00@@

Fields line up.

Signed-off-by: Stephane Eranian <eranian@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1541587845-9150-1-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-17 14:53:41 -03:00

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#include <stdio.h>
#include <inttypes.h>
#include <linux/time64.h>
#include <math.h>
#include "evlist.h"
#include "evsel.h"
#include "stat.h"
#include "top.h"
#include "thread_map.h"
#include "cpumap.h"
#include "string2.h"
#include "sane_ctype.h"
#include "cgroup.h"
#include <math.h>
#include <api/fs/fs.h>
#define CNTR_NOT_SUPPORTED "<not supported>"
#define CNTR_NOT_COUNTED "<not counted>"
static bool is_duration_time(struct perf_evsel *evsel)
{
return !strcmp(evsel->name, "duration_time");
}
static void print_running(struct perf_stat_config *config,
u64 run, u64 ena)
{
if (config->csv_output) {
fprintf(config->output, "%s%" PRIu64 "%s%.2f",
config->csv_sep,
run,
config->csv_sep,
ena ? 100.0 * run / ena : 100.0);
} else if (run != ena) {
fprintf(config->output, " (%.2f%%)", 100.0 * run / ena);
}
}
static void print_noise_pct(struct perf_stat_config *config,
double total, double avg)
{
double pct = rel_stddev_stats(total, avg);
if (config->csv_output)
fprintf(config->output, "%s%.2f%%", config->csv_sep, pct);
else if (pct)
fprintf(config->output, " ( +-%6.2f%% )", pct);
}
static void print_noise(struct perf_stat_config *config,
struct perf_evsel *evsel, double avg)
{
struct perf_stat_evsel *ps;
if (config->run_count == 1)
return;
ps = evsel->stats;
print_noise_pct(config, stddev_stats(&ps->res_stats[0]), avg);
}
static void print_cgroup(struct perf_stat_config *config, struct perf_evsel *evsel)
{
if (nr_cgroups) {
const char *cgrp_name = evsel->cgrp ? evsel->cgrp->name : "";
fprintf(config->output, "%s%s", config->csv_sep, cgrp_name);
}
}
static void aggr_printout(struct perf_stat_config *config,
struct perf_evsel *evsel, int id, int nr)
{
switch (config->aggr_mode) {
case AGGR_CORE:
fprintf(config->output, "S%d-C%*d%s%*d%s",
cpu_map__id_to_socket(id),
config->csv_output ? 0 : -8,
cpu_map__id_to_cpu(id),
config->csv_sep,
config->csv_output ? 0 : 4,
nr,
config->csv_sep);
break;
case AGGR_SOCKET:
fprintf(config->output, "S%*d%s%*d%s",
config->csv_output ? 0 : -5,
id,
config->csv_sep,
config->csv_output ? 0 : 4,
nr,
config->csv_sep);
break;
case AGGR_NONE:
fprintf(config->output, "CPU%*d%s",
config->csv_output ? 0 : -4,
perf_evsel__cpus(evsel)->map[id], config->csv_sep);
break;
case AGGR_THREAD:
fprintf(config->output, "%*s-%*d%s",
config->csv_output ? 0 : 16,
thread_map__comm(evsel->threads, id),
config->csv_output ? 0 : -8,
thread_map__pid(evsel->threads, id),
config->csv_sep);
break;
case AGGR_GLOBAL:
case AGGR_UNSET:
default:
break;
}
}
struct outstate {
FILE *fh;
bool newline;
const char *prefix;
int nfields;
int id, nr;
struct perf_evsel *evsel;
};
#define METRIC_LEN 35
static void new_line_std(struct perf_stat_config *config __maybe_unused,
void *ctx)
{
struct outstate *os = ctx;
os->newline = true;
}
static void do_new_line_std(struct perf_stat_config *config,
struct outstate *os)
{
fputc('\n', os->fh);
fputs(os->prefix, os->fh);
aggr_printout(config, os->evsel, os->id, os->nr);
if (config->aggr_mode == AGGR_NONE)
fprintf(os->fh, " ");
fprintf(os->fh, " ");
}
static void print_metric_std(struct perf_stat_config *config,
void *ctx, const char *color, const char *fmt,
const char *unit, double val)
{
struct outstate *os = ctx;
FILE *out = os->fh;
int n;
bool newline = os->newline;
os->newline = false;
if (unit == NULL || fmt == NULL) {
fprintf(out, "%-*s", METRIC_LEN, "");
return;
}
if (newline)
do_new_line_std(config, os);
n = fprintf(out, " # ");
if (color)
n += color_fprintf(out, color, fmt, val);
else
n += fprintf(out, fmt, val);
fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
}
static void new_line_csv(struct perf_stat_config *config, void *ctx)
{
struct outstate *os = ctx;
int i;
fputc('\n', os->fh);
if (os->prefix)
fprintf(os->fh, "%s%s", os->prefix, config->csv_sep);
aggr_printout(config, os->evsel, os->id, os->nr);
for (i = 0; i < os->nfields; i++)
fputs(config->csv_sep, os->fh);
}
static void print_metric_csv(struct perf_stat_config *config __maybe_unused,
void *ctx,
const char *color __maybe_unused,
const char *fmt, const char *unit, double val)
{
struct outstate *os = ctx;
FILE *out = os->fh;
char buf[64], *vals, *ends;
if (unit == NULL || fmt == NULL) {
fprintf(out, "%s%s", config->csv_sep, config->csv_sep);
return;
}
snprintf(buf, sizeof(buf), fmt, val);
ends = vals = ltrim(buf);
while (isdigit(*ends) || *ends == '.')
ends++;
*ends = 0;
while (isspace(*unit))
unit++;
fprintf(out, "%s%s%s%s", config->csv_sep, vals, config->csv_sep, unit);
}
/* Filter out some columns that don't work well in metrics only mode */
static bool valid_only_metric(const char *unit)
{
if (!unit)
return false;
if (strstr(unit, "/sec") ||
strstr(unit, "hz") ||
strstr(unit, "Hz") ||
strstr(unit, "CPUs utilized"))
return false;
return true;
}
static const char *fixunit(char *buf, struct perf_evsel *evsel,
const char *unit)
{
if (!strncmp(unit, "of all", 6)) {
snprintf(buf, 1024, "%s %s", perf_evsel__name(evsel),
unit);
return buf;
}
return unit;
}
static void print_metric_only(struct perf_stat_config *config,
void *ctx, const char *color, const char *fmt,
const char *unit, double val)
{
struct outstate *os = ctx;
FILE *out = os->fh;
char buf[1024], str[1024];
unsigned mlen = config->metric_only_len;
if (!valid_only_metric(unit))
return;
unit = fixunit(buf, os->evsel, unit);
if (mlen < strlen(unit))
mlen = strlen(unit) + 1;
if (color)
mlen += strlen(color) + sizeof(PERF_COLOR_RESET) - 1;
color_snprintf(str, sizeof(str), color ?: "", fmt, val);
fprintf(out, "%*s ", mlen, str);
}
static void print_metric_only_csv(struct perf_stat_config *config __maybe_unused,
void *ctx, const char *color __maybe_unused,
const char *fmt,
const char *unit, double val)
{
struct outstate *os = ctx;
FILE *out = os->fh;
char buf[64], *vals, *ends;
char tbuf[1024];
if (!valid_only_metric(unit))
return;
unit = fixunit(tbuf, os->evsel, unit);
snprintf(buf, sizeof buf, fmt, val);
ends = vals = ltrim(buf);
while (isdigit(*ends) || *ends == '.')
ends++;
*ends = 0;
fprintf(out, "%s%s", vals, config->csv_sep);
}
static void new_line_metric(struct perf_stat_config *config __maybe_unused,
void *ctx __maybe_unused)
{
}
static void print_metric_header(struct perf_stat_config *config,
void *ctx, const char *color __maybe_unused,
const char *fmt __maybe_unused,
const char *unit, double val __maybe_unused)
{
struct outstate *os = ctx;
char tbuf[1024];
if (!valid_only_metric(unit))
return;
unit = fixunit(tbuf, os->evsel, unit);
if (config->csv_output)
fprintf(os->fh, "%s%s", unit, config->csv_sep);
else
fprintf(os->fh, "%*s ", config->metric_only_len, unit);
}
static int first_shadow_cpu(struct perf_stat_config *config,
struct perf_evsel *evsel, int id)
{
struct perf_evlist *evlist = evsel->evlist;
int i;
if (!config->aggr_get_id)
return 0;
if (config->aggr_mode == AGGR_NONE)
return id;
if (config->aggr_mode == AGGR_GLOBAL)
return 0;
for (i = 0; i < perf_evsel__nr_cpus(evsel); i++) {
int cpu2 = perf_evsel__cpus(evsel)->map[i];
if (config->aggr_get_id(config, evlist->cpus, cpu2) == id)
return cpu2;
}
return 0;
}
static void abs_printout(struct perf_stat_config *config,
int id, int nr, struct perf_evsel *evsel, double avg)
{
FILE *output = config->output;
double sc = evsel->scale;
const char *fmt;
if (config->csv_output) {
fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
} else {
if (config->big_num)
fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
else
fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
}
aggr_printout(config, evsel, id, nr);
fprintf(output, fmt, avg, config->csv_sep);
if (evsel->unit)
fprintf(output, "%-*s%s",
config->csv_output ? 0 : config->unit_width,
evsel->unit, config->csv_sep);
fprintf(output, "%-*s", config->csv_output ? 0 : 25, perf_evsel__name(evsel));
print_cgroup(config, evsel);
}
static bool is_mixed_hw_group(struct perf_evsel *counter)
{
struct perf_evlist *evlist = counter->evlist;
u32 pmu_type = counter->attr.type;
struct perf_evsel *pos;
if (counter->nr_members < 2)
return false;
evlist__for_each_entry(evlist, pos) {
/* software events can be part of any hardware group */
if (pos->attr.type == PERF_TYPE_SOFTWARE)
continue;
if (pmu_type == PERF_TYPE_SOFTWARE) {
pmu_type = pos->attr.type;
continue;
}
if (pmu_type != pos->attr.type)
return true;
}
return false;
}
static void printout(struct perf_stat_config *config, int id, int nr,
struct perf_evsel *counter, double uval,
char *prefix, u64 run, u64 ena, double noise,
struct runtime_stat *st)
{
struct perf_stat_output_ctx out;
struct outstate os = {
.fh = config->output,
.prefix = prefix ? prefix : "",
.id = id,
.nr = nr,
.evsel = counter,
};
print_metric_t pm = print_metric_std;
new_line_t nl;
if (config->metric_only) {
nl = new_line_metric;
if (config->csv_output)
pm = print_metric_only_csv;
else
pm = print_metric_only;
} else
nl = new_line_std;
if (config->csv_output && !config->metric_only) {
static int aggr_fields[] = {
[AGGR_GLOBAL] = 0,
[AGGR_THREAD] = 1,
[AGGR_NONE] = 1,
[AGGR_SOCKET] = 2,
[AGGR_CORE] = 2,
};
pm = print_metric_csv;
nl = new_line_csv;
os.nfields = 3;
os.nfields += aggr_fields[config->aggr_mode];
if (counter->cgrp)
os.nfields++;
}
if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
if (config->metric_only) {
pm(config, &os, NULL, "", "", 0);
return;
}
aggr_printout(config, counter, id, nr);
fprintf(config->output, "%*s%s",
config->csv_output ? 0 : 18,
counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
config->csv_sep);
if (counter->supported) {
config->print_free_counters_hint = 1;
if (is_mixed_hw_group(counter))
config->print_mixed_hw_group_error = 1;
}
fprintf(config->output, "%-*s%s",
config->csv_output ? 0 : config->unit_width,
counter->unit, config->csv_sep);
fprintf(config->output, "%*s",
config->csv_output ? 0 : -25,
perf_evsel__name(counter));
print_cgroup(config, counter);
if (!config->csv_output)
pm(config, &os, NULL, NULL, "", 0);
print_noise(config, counter, noise);
print_running(config, run, ena);
if (config->csv_output)
pm(config, &os, NULL, NULL, "", 0);
return;
}
if (!config->metric_only)
abs_printout(config, id, nr, counter, uval);
out.print_metric = pm;
out.new_line = nl;
out.ctx = &os;
out.force_header = false;
if (config->csv_output && !config->metric_only) {
print_noise(config, counter, noise);
print_running(config, run, ena);
}
perf_stat__print_shadow_stats(config, counter, uval,
first_shadow_cpu(config, counter, id),
&out, &config->metric_events, st);
if (!config->csv_output && !config->metric_only) {
print_noise(config, counter, noise);
print_running(config, run, ena);
}
}
static void aggr_update_shadow(struct perf_stat_config *config,
struct perf_evlist *evlist)
{
int cpu, s2, id, s;
u64 val;
struct perf_evsel *counter;
for (s = 0; s < config->aggr_map->nr; s++) {
id = config->aggr_map->map[s];
evlist__for_each_entry(evlist, counter) {
val = 0;
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
s2 = config->aggr_get_id(config, evlist->cpus, cpu);
if (s2 != id)
continue;
val += perf_counts(counter->counts, cpu, 0)->val;
}
perf_stat__update_shadow_stats(counter, val,
first_shadow_cpu(config, counter, id),
&rt_stat);
}
}
}
static void uniquify_event_name(struct perf_evsel *counter)
{
char *new_name;
char *config;
if (counter->uniquified_name ||
!counter->pmu_name || !strncmp(counter->name, counter->pmu_name,
strlen(counter->pmu_name)))
return;
config = strchr(counter->name, '/');
if (config) {
if (asprintf(&new_name,
"%s%s", counter->pmu_name, config) > 0) {
free(counter->name);
counter->name = new_name;
}
} else {
if (asprintf(&new_name,
"%s [%s]", counter->name, counter->pmu_name) > 0) {
free(counter->name);
counter->name = new_name;
}
}
counter->uniquified_name = true;
}
static void collect_all_aliases(struct perf_stat_config *config, struct perf_evsel *counter,
void (*cb)(struct perf_stat_config *config, struct perf_evsel *counter, void *data,
bool first),
void *data)
{
struct perf_evlist *evlist = counter->evlist;
struct perf_evsel *alias;
alias = list_prepare_entry(counter, &(evlist->entries), node);
list_for_each_entry_continue (alias, &evlist->entries, node) {
if (strcmp(perf_evsel__name(alias), perf_evsel__name(counter)) ||
alias->scale != counter->scale ||
alias->cgrp != counter->cgrp ||
strcmp(alias->unit, counter->unit) ||
perf_evsel__is_clock(alias) != perf_evsel__is_clock(counter))
break;
alias->merged_stat = true;
cb(config, alias, data, false);
}
}
static bool collect_data(struct perf_stat_config *config, struct perf_evsel *counter,
void (*cb)(struct perf_stat_config *config, struct perf_evsel *counter, void *data,
bool first),
void *data)
{
if (counter->merged_stat)
return false;
cb(config, counter, data, true);
if (config->no_merge)
uniquify_event_name(counter);
else if (counter->auto_merge_stats)
collect_all_aliases(config, counter, cb, data);
return true;
}
struct aggr_data {
u64 ena, run, val;
int id;
int nr;
int cpu;
};
static void aggr_cb(struct perf_stat_config *config,
struct perf_evsel *counter, void *data, bool first)
{
struct aggr_data *ad = data;
int cpu, s2;
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
struct perf_counts_values *counts;
s2 = config->aggr_get_id(config, perf_evsel__cpus(counter), cpu);
if (s2 != ad->id)
continue;
if (first)
ad->nr++;
counts = perf_counts(counter->counts, cpu, 0);
/*
* When any result is bad, make them all to give
* consistent output in interval mode.
*/
if (counts->ena == 0 || counts->run == 0 ||
counter->counts->scaled == -1) {
ad->ena = 0;
ad->run = 0;
break;
}
ad->val += counts->val;
ad->ena += counts->ena;
ad->run += counts->run;
}
}
static void print_aggr(struct perf_stat_config *config,
struct perf_evlist *evlist,
char *prefix)
{
bool metric_only = config->metric_only;
FILE *output = config->output;
struct perf_evsel *counter;
int s, id, nr;
double uval;
u64 ena, run, val;
bool first;
if (!(config->aggr_map || config->aggr_get_id))
return;
aggr_update_shadow(config, evlist);
/*
* With metric_only everything is on a single line.
* Without each counter has its own line.
*/
for (s = 0; s < config->aggr_map->nr; s++) {
struct aggr_data ad;
if (prefix && metric_only)
fprintf(output, "%s", prefix);
ad.id = id = config->aggr_map->map[s];
first = true;
evlist__for_each_entry(evlist, counter) {
if (is_duration_time(counter))
continue;
ad.val = ad.ena = ad.run = 0;
ad.nr = 0;
if (!collect_data(config, counter, aggr_cb, &ad))
continue;
nr = ad.nr;
ena = ad.ena;
run = ad.run;
val = ad.val;
if (first && metric_only) {
first = false;
aggr_printout(config, counter, id, nr);
}
if (prefix && !metric_only)
fprintf(output, "%s", prefix);
uval = val * counter->scale;
printout(config, id, nr, counter, uval, prefix,
run, ena, 1.0, &rt_stat);
if (!metric_only)
fputc('\n', output);
}
if (metric_only)
fputc('\n', output);
}
}
static int cmp_val(const void *a, const void *b)
{
return ((struct perf_aggr_thread_value *)b)->val -
((struct perf_aggr_thread_value *)a)->val;
}
static struct perf_aggr_thread_value *sort_aggr_thread(
struct perf_evsel *counter,
int nthreads, int ncpus,
int *ret,
struct target *_target)
{
int cpu, thread, i = 0;
double uval;
struct perf_aggr_thread_value *buf;
buf = calloc(nthreads, sizeof(struct perf_aggr_thread_value));
if (!buf)
return NULL;
for (thread = 0; thread < nthreads; thread++) {
u64 ena = 0, run = 0, val = 0;
for (cpu = 0; cpu < ncpus; cpu++) {
val += perf_counts(counter->counts, cpu, thread)->val;
ena += perf_counts(counter->counts, cpu, thread)->ena;
run += perf_counts(counter->counts, cpu, thread)->run;
}
uval = val * counter->scale;
/*
* Skip value 0 when enabling --per-thread globally,
* otherwise too many 0 output.
*/
if (uval == 0.0 && target__has_per_thread(_target))
continue;
buf[i].counter = counter;
buf[i].id = thread;
buf[i].uval = uval;
buf[i].val = val;
buf[i].run = run;
buf[i].ena = ena;
i++;
}
qsort(buf, i, sizeof(struct perf_aggr_thread_value), cmp_val);
if (ret)
*ret = i;
return buf;
}
static void print_aggr_thread(struct perf_stat_config *config,
struct target *_target,
struct perf_evsel *counter, char *prefix)
{
FILE *output = config->output;
int nthreads = thread_map__nr(counter->threads);
int ncpus = cpu_map__nr(counter->cpus);
int thread, sorted_threads, id;
struct perf_aggr_thread_value *buf;
buf = sort_aggr_thread(counter, nthreads, ncpus, &sorted_threads, _target);
if (!buf) {
perror("cannot sort aggr thread");
return;
}
for (thread = 0; thread < sorted_threads; thread++) {
if (prefix)
fprintf(output, "%s", prefix);
id = buf[thread].id;
if (config->stats)
printout(config, id, 0, buf[thread].counter, buf[thread].uval,
prefix, buf[thread].run, buf[thread].ena, 1.0,
&config->stats[id]);
else
printout(config, id, 0, buf[thread].counter, buf[thread].uval,
prefix, buf[thread].run, buf[thread].ena, 1.0,
&rt_stat);
fputc('\n', output);
}
free(buf);
}
struct caggr_data {
double avg, avg_enabled, avg_running;
};
static void counter_aggr_cb(struct perf_stat_config *config __maybe_unused,
struct perf_evsel *counter, void *data,
bool first __maybe_unused)
{
struct caggr_data *cd = data;
struct perf_stat_evsel *ps = counter->stats;
cd->avg += avg_stats(&ps->res_stats[0]);
cd->avg_enabled += avg_stats(&ps->res_stats[1]);
cd->avg_running += avg_stats(&ps->res_stats[2]);
}
/*
* Print out the results of a single counter:
* aggregated counts in system-wide mode
*/
static void print_counter_aggr(struct perf_stat_config *config,
struct perf_evsel *counter, char *prefix)
{
bool metric_only = config->metric_only;
FILE *output = config->output;
double uval;
struct caggr_data cd = { .avg = 0.0 };
if (!collect_data(config, counter, counter_aggr_cb, &cd))
return;
if (prefix && !metric_only)
fprintf(output, "%s", prefix);
uval = cd.avg * counter->scale;
printout(config, -1, 0, counter, uval, prefix, cd.avg_running, cd.avg_enabled,
cd.avg, &rt_stat);
if (!metric_only)
fprintf(output, "\n");
}
static void counter_cb(struct perf_stat_config *config __maybe_unused,
struct perf_evsel *counter, void *data,
bool first __maybe_unused)
{
struct aggr_data *ad = data;
ad->val += perf_counts(counter->counts, ad->cpu, 0)->val;
ad->ena += perf_counts(counter->counts, ad->cpu, 0)->ena;
ad->run += perf_counts(counter->counts, ad->cpu, 0)->run;
}
/*
* Print out the results of a single counter:
* does not use aggregated count in system-wide
*/
static void print_counter(struct perf_stat_config *config,
struct perf_evsel *counter, char *prefix)
{
FILE *output = config->output;
u64 ena, run, val;
double uval;
int cpu;
for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
struct aggr_data ad = { .cpu = cpu };
if (!collect_data(config, counter, counter_cb, &ad))
return;
val = ad.val;
ena = ad.ena;
run = ad.run;
if (prefix)
fprintf(output, "%s", prefix);
uval = val * counter->scale;
printout(config, cpu, 0, counter, uval, prefix, run, ena, 1.0,
&rt_stat);
fputc('\n', output);
}
}
static void print_no_aggr_metric(struct perf_stat_config *config,
struct perf_evlist *evlist,
char *prefix)
{
int cpu;
int nrcpus = 0;
struct perf_evsel *counter;
u64 ena, run, val;
double uval;
nrcpus = evlist->cpus->nr;
for (cpu = 0; cpu < nrcpus; cpu++) {
bool first = true;
if (prefix)
fputs(prefix, config->output);
evlist__for_each_entry(evlist, counter) {
if (is_duration_time(counter))
continue;
if (first) {
aggr_printout(config, counter, cpu, 0);
first = false;
}
val = perf_counts(counter->counts, cpu, 0)->val;
ena = perf_counts(counter->counts, cpu, 0)->ena;
run = perf_counts(counter->counts, cpu, 0)->run;
uval = val * counter->scale;
printout(config, cpu, 0, counter, uval, prefix, run, ena, 1.0,
&rt_stat);
}
fputc('\n', config->output);
}
}
static int aggr_header_lens[] = {
[AGGR_CORE] = 18,
[AGGR_SOCKET] = 12,
[AGGR_NONE] = 6,
[AGGR_THREAD] = 24,
[AGGR_GLOBAL] = 0,
};
static const char *aggr_header_csv[] = {
[AGGR_CORE] = "core,cpus,",
[AGGR_SOCKET] = "socket,cpus",
[AGGR_NONE] = "cpu,",
[AGGR_THREAD] = "comm-pid,",
[AGGR_GLOBAL] = ""
};
static void print_metric_headers(struct perf_stat_config *config,
struct perf_evlist *evlist,
const char *prefix, bool no_indent)
{
struct perf_stat_output_ctx out;
struct perf_evsel *counter;
struct outstate os = {
.fh = config->output
};
if (prefix)
fprintf(config->output, "%s", prefix);
if (!config->csv_output && !no_indent)
fprintf(config->output, "%*s",
aggr_header_lens[config->aggr_mode], "");
if (config->csv_output) {
if (config->interval)
fputs("time,", config->output);
fputs(aggr_header_csv[config->aggr_mode], config->output);
}
/* Print metrics headers only */
evlist__for_each_entry(evlist, counter) {
if (is_duration_time(counter))
continue;
os.evsel = counter;
out.ctx = &os;
out.print_metric = print_metric_header;
out.new_line = new_line_metric;
out.force_header = true;
os.evsel = counter;
perf_stat__print_shadow_stats(config, counter, 0,
0,
&out,
&config->metric_events,
&rt_stat);
}
fputc('\n', config->output);
}
static void print_interval(struct perf_stat_config *config,
struct perf_evlist *evlist,
char *prefix, struct timespec *ts)
{
bool metric_only = config->metric_only;
unsigned int unit_width = config->unit_width;
FILE *output = config->output;
static int num_print_interval;
if (config->interval_clear)
puts(CONSOLE_CLEAR);
sprintf(prefix, "%6lu.%09lu%s", ts->tv_sec, ts->tv_nsec, config->csv_sep);
if ((num_print_interval == 0 && !config->csv_output) || config->interval_clear) {
switch (config->aggr_mode) {
case AGGR_SOCKET:
fprintf(output, "# time socket cpus");
if (!metric_only)
fprintf(output, " counts %*s events\n", unit_width, "unit");
break;
case AGGR_CORE:
fprintf(output, "# time core cpus");
if (!metric_only)
fprintf(output, " counts %*s events\n", unit_width, "unit");
break;
case AGGR_NONE:
fprintf(output, "# time CPU ");
if (!metric_only)
fprintf(output, " counts %*s events\n", unit_width, "unit");
break;
case AGGR_THREAD:
fprintf(output, "# time comm-pid");
if (!metric_only)
fprintf(output, " counts %*s events\n", unit_width, "unit");
break;
case AGGR_GLOBAL:
default:
fprintf(output, "# time");
if (!metric_only)
fprintf(output, " counts %*s events\n", unit_width, "unit");
case AGGR_UNSET:
break;
}
}
if ((num_print_interval == 0 || config->interval_clear) && metric_only)
print_metric_headers(config, evlist, " ", true);
if (++num_print_interval == 25)
num_print_interval = 0;
}
static void print_header(struct perf_stat_config *config,
struct target *_target,
int argc, const char **argv)
{
FILE *output = config->output;
int i;
fflush(stdout);
if (!config->csv_output) {
fprintf(output, "\n");
fprintf(output, " Performance counter stats for ");
if (_target->system_wide)
fprintf(output, "\'system wide");
else if (_target->cpu_list)
fprintf(output, "\'CPU(s) %s", _target->cpu_list);
else if (!target__has_task(_target)) {
fprintf(output, "\'%s", argv ? argv[0] : "pipe");
for (i = 1; argv && (i < argc); i++)
fprintf(output, " %s", argv[i]);
} else if (_target->pid)
fprintf(output, "process id \'%s", _target->pid);
else
fprintf(output, "thread id \'%s", _target->tid);
fprintf(output, "\'");
if (config->run_count > 1)
fprintf(output, " (%d runs)", config->run_count);
fprintf(output, ":\n\n");
}
}
static int get_precision(double num)
{
if (num > 1)
return 0;
return lround(ceil(-log10(num)));
}
static void print_table(struct perf_stat_config *config,
FILE *output, int precision, double avg)
{
char tmp[64];
int idx, indent = 0;
scnprintf(tmp, 64, " %17.*f", precision, avg);
while (tmp[indent] == ' ')
indent++;
fprintf(output, "%*s# Table of individual measurements:\n", indent, "");
for (idx = 0; idx < config->run_count; idx++) {
double run = (double) config->walltime_run[idx] / NSEC_PER_SEC;
int h, n = 1 + abs((int) (100.0 * (run - avg)/run) / 5);
fprintf(output, " %17.*f (%+.*f) ",
precision, run, precision, run - avg);
for (h = 0; h < n; h++)
fprintf(output, "#");
fprintf(output, "\n");
}
fprintf(output, "\n%*s# Final result:\n", indent, "");
}
static double timeval2double(struct timeval *t)
{
return t->tv_sec + (double) t->tv_usec/USEC_PER_SEC;
}
static void print_footer(struct perf_stat_config *config)
{
double avg = avg_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
FILE *output = config->output;
int n;
if (!config->null_run)
fprintf(output, "\n");
if (config->run_count == 1) {
fprintf(output, " %17.9f seconds time elapsed", avg);
if (config->ru_display) {
double ru_utime = timeval2double(&config->ru_data.ru_utime);
double ru_stime = timeval2double(&config->ru_data.ru_stime);
fprintf(output, "\n\n");
fprintf(output, " %17.9f seconds user\n", ru_utime);
fprintf(output, " %17.9f seconds sys\n", ru_stime);
}
} else {
double sd = stddev_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
/*
* Display at most 2 more significant
* digits than the stddev inaccuracy.
*/
int precision = get_precision(sd) + 2;
if (config->walltime_run_table)
print_table(config, output, precision, avg);
fprintf(output, " %17.*f +- %.*f seconds time elapsed",
precision, avg, precision, sd);
print_noise_pct(config, sd, avg);
}
fprintf(output, "\n\n");
if (config->print_free_counters_hint &&
sysctl__read_int("kernel/nmi_watchdog", &n) >= 0 &&
n > 0)
fprintf(output,
"Some events weren't counted. Try disabling the NMI watchdog:\n"
" echo 0 > /proc/sys/kernel/nmi_watchdog\n"
" perf stat ...\n"
" echo 1 > /proc/sys/kernel/nmi_watchdog\n");
if (config->print_mixed_hw_group_error)
fprintf(output,
"The events in group usually have to be from "
"the same PMU. Try reorganizing the group.\n");
}
void
perf_evlist__print_counters(struct perf_evlist *evlist,
struct perf_stat_config *config,
struct target *_target,
struct timespec *ts,
int argc, const char **argv)
{
bool metric_only = config->metric_only;
int interval = config->interval;
struct perf_evsel *counter;
char buf[64], *prefix = NULL;
if (interval)
print_interval(config, evlist, prefix = buf, ts);
else
print_header(config, _target, argc, argv);
if (metric_only) {
static int num_print_iv;
if (num_print_iv == 0 && !interval)
print_metric_headers(config, evlist, prefix, false);
if (num_print_iv++ == 25)
num_print_iv = 0;
if (config->aggr_mode == AGGR_GLOBAL && prefix)
fprintf(config->output, "%s", prefix);
}
switch (config->aggr_mode) {
case AGGR_CORE:
case AGGR_SOCKET:
print_aggr(config, evlist, prefix);
break;
case AGGR_THREAD:
evlist__for_each_entry(evlist, counter) {
if (is_duration_time(counter))
continue;
print_aggr_thread(config, _target, counter, prefix);
}
break;
case AGGR_GLOBAL:
evlist__for_each_entry(evlist, counter) {
if (is_duration_time(counter))
continue;
print_counter_aggr(config, counter, prefix);
}
if (metric_only)
fputc('\n', config->output);
break;
case AGGR_NONE:
if (metric_only)
print_no_aggr_metric(config, evlist, prefix);
else {
evlist__for_each_entry(evlist, counter) {
if (is_duration_time(counter))
continue;
print_counter(config, counter, prefix);
}
}
break;
case AGGR_UNSET:
default:
break;
}
if (!interval && !config->csv_output)
print_footer(config);
fflush(config->output);
}
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