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32b8af82e3
Currently all the -p option PID arguments tasks values get aggregated
and printed as single values.
Adding --per-tasks option to print values per task.
$ perf stat -e cycles,instructions --per-thread -p 30190,30242
^C
Performance counter stats for process id '30190,30242':
cat-30190 0 cycles
yes-30242 3,842,525,421 cycles
cat-30190 0 instructions
yes-30242 10,370,817,010 instructions
1.143155657 seconds time elapsed
Also works under interval mode:
$ perf stat -e cycles,instructions --per-thread -p 30190,30242 -I 1000
# time comm-pid counts unit events
1.000073435 cat-30190 89,058 cycles
1.000073435 yes-30242 3,360,786,902 cycles (100.00%)
1.000073435 cat-30190 14,066 instructions
1.000073435 yes-30242 9,069,937,462 instructions
2.000204830 cat-30190 0 cycles
2.000204830 yes-30242 3,351,667,626 cycles
2.000204830 cat-30190 0 instructions
2.000204830 yes-30242 9,045,796,885 instructions
^C 2.771286639 cat-30190 0 cycles
2.771286639 yes-30242 2,593,884,166 cycles
2.771286639 cat-30190 0 instructions
2.771286639 yes-30242 7,001,171,191 instructions
It works only with -t and -p options, otherwise following error is
printed:
$ perf stat -e cycles --per-thread -I 1000 ls
The --per-thread option is only available when monitoring via -p -t options.
-p, --pid <pid> stat events on existing process id
-t, --tid <tid> stat events on existing thread id
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1435310967-14570-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
#ifndef __PERF_STATS_H
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#define __PERF_STATS_H
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#include <linux/types.h>
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#include <stdio.h>
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#include "xyarray.h"
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struct stats
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{
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double n, mean, M2;
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u64 max, min;
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};
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enum perf_stat_evsel_id {
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PERF_STAT_EVSEL_ID__NONE = 0,
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PERF_STAT_EVSEL_ID__CYCLES_IN_TX,
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PERF_STAT_EVSEL_ID__TRANSACTION_START,
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PERF_STAT_EVSEL_ID__ELISION_START,
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PERF_STAT_EVSEL_ID__CYCLES_IN_TX_CP,
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PERF_STAT_EVSEL_ID__MAX,
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};
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struct perf_stat {
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struct stats res_stats[3];
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enum perf_stat_evsel_id id;
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};
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enum aggr_mode {
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AGGR_NONE,
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AGGR_GLOBAL,
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AGGR_SOCKET,
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AGGR_CORE,
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AGGR_THREAD,
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};
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struct perf_counts_values {
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union {
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struct {
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u64 val;
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u64 ena;
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u64 run;
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};
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u64 values[3];
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};
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};
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struct perf_counts {
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s8 scaled;
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struct perf_counts_values aggr;
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struct xyarray *values;
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};
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static inline struct perf_counts_values*
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perf_counts(struct perf_counts *counts, int cpu, int thread)
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{
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return xyarray__entry(counts->values, cpu, thread);
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}
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void update_stats(struct stats *stats, u64 val);
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double avg_stats(struct stats *stats);
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double stddev_stats(struct stats *stats);
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double rel_stddev_stats(double stddev, double avg);
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static inline void init_stats(struct stats *stats)
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{
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stats->n = 0.0;
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stats->mean = 0.0;
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stats->M2 = 0.0;
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stats->min = (u64) -1;
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stats->max = 0;
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}
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struct perf_evsel;
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struct perf_evlist;
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bool __perf_evsel_stat__is(struct perf_evsel *evsel,
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enum perf_stat_evsel_id id);
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#define perf_stat_evsel__is(evsel, id) \
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__perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id)
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void perf_stat_evsel_id_init(struct perf_evsel *evsel);
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extern struct stats walltime_nsecs_stats;
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void perf_stat__reset_shadow_stats(void);
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void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
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int cpu);
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void perf_stat__print_shadow_stats(FILE *out, struct perf_evsel *evsel,
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double avg, int cpu, enum aggr_mode aggr);
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struct perf_counts *perf_counts__new(int ncpus, int nthreads);
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void perf_counts__delete(struct perf_counts *counts);
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void perf_evsel__reset_counts(struct perf_evsel *evsel);
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int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus, int nthreads);
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void perf_evsel__free_counts(struct perf_evsel *evsel);
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void perf_evsel__reset_stat_priv(struct perf_evsel *evsel);
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int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel);
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void perf_evsel__free_stat_priv(struct perf_evsel *evsel);
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int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel,
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int ncpus, int nthreads);
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void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel);
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int perf_evsel__alloc_stats(struct perf_evsel *evsel, bool alloc_raw);
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int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
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void perf_evlist__free_stats(struct perf_evlist *evlist);
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void perf_evlist__reset_stats(struct perf_evlist *evlist);
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#endif
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