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author | Ingo Molnar <mingo@elte.hu> | 2011-04-27 13:50:47 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2011-04-26 21:03:16 +0200 |
commit | c6264deff7ea6125492b442edad885e5429679af (patch) | |
tree | 8533d8e10cadd0eb31518a514486c561f004115b /tools/perf/builtin-stat.c | |
parent | 8bb6c79f24e66538f606076915e918242c02ec7c (diff) | |
download | op-kernel-dev-c6264deff7ea6125492b442edad885e5429679af.zip op-kernel-dev-c6264deff7ea6125492b442edad885e5429679af.tar.gz |
perf stat: Add -d/--detailed flag to run with a lot of events
Add the new -d/--detailed flag, which generates a pretty detailed event list:
Performance counter stats for './hackbench 10' (10 runs):
1514.287888 task-clock # 10.897 CPUs utilized ( +- 3.05% )
39,698 context-switches # 0.026 M/sec ( +- 12.19% )
8,147 CPU-migrations # 0.005 M/sec ( +- 16.55% )
17,918 page-faults # 0.012 M/sec ( +- 0.37% )
2,944,504,050 cycles # 1.944 GHz ( +- 3.89% ) (32.60%)
1,043,971,283 stalled-cycles # 35.45% of all cycles are idle ( +- 5.22% ) (44.48%)
1,655,906,768 instructions # 0.56 insns per cycle
# 0.63 stalled cycles per insn ( +- 1.95% ) (55.09%)
338,832,373 branches # 223.757 M/sec ( +- 1.96% ) (64.47%)
3,892,416 branch-misses # 1.15% of all branches ( +- 5.49% ) (73.12%)
606,410,482 L1-dcache-loads # 400.459 M/sec ( +- 1.29% ) (71.21%)
31,204,395 L1-dcache-load-misses # 5.15% of all L1-dcache hits ( +- 3.04% ) (60.43%)
3,922,751 LLC-loads # 2.590 M/sec ( +- 6.80% ) (46.87%)
5,037,288 LLC-load-misses # 3.327 M/sec ( +- 3.56% ) (13.00%)
0.138966828 seconds time elapsed ( +- 4.11% )
This can be used "at a glance" for narrower analysis.
-d can also be used in addition to other -e events, to further expand an event list.
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/n/tip-cxs98quixs3qyvdqx3goojc4@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-stat.c')
-rw-r--r-- | tools/perf/builtin-stat.c | 68 |
1 files changed, 60 insertions, 8 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 03bac6a..6959fde 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -73,6 +73,47 @@ static struct perf_event_attr default_attrs[] = { }; +/* + * Detailed stats: + */ +static struct perf_event_attr detailed_attrs[] = { + + { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, + { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, + { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, + { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, + + { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, + { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES }, + { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, + { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, + { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, + + { .type = PERF_TYPE_HW_CACHE, + .config = + PERF_COUNT_HW_CACHE_L1D << 0 | + (PERF_COUNT_HW_CACHE_OP_READ << 8) | + (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, + + { .type = PERF_TYPE_HW_CACHE, + .config = + PERF_COUNT_HW_CACHE_L1D << 0 | + (PERF_COUNT_HW_CACHE_OP_READ << 8) | + (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, + + { .type = PERF_TYPE_HW_CACHE, + .config = + PERF_COUNT_HW_CACHE_LL << 0 | + (PERF_COUNT_HW_CACHE_OP_READ << 8) | + (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, + + { .type = PERF_TYPE_HW_CACHE, + .config = + PERF_COUNT_HW_CACHE_LL << 0 | + (PERF_COUNT_HW_CACHE_OP_READ << 8) | + (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, +}; + struct perf_evlist *evsel_list; static bool system_wide = false; @@ -86,6 +127,7 @@ static pid_t target_pid = -1; static pid_t target_tid = -1; static pid_t child_pid = -1; static bool null_run = false; +static bool detailed_run = false; static bool big_num = true; static int big_num_opt = -1; static const char *cpu_list; @@ -550,7 +592,7 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) && - runtime_branches_stats[cpu].n != 0) { + runtime_l1_dcache_stats[cpu].n != 0) { print_l1_dcache_misses(cpu, evsel, avg); } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) && runtime_cacherefs_stats[cpu].n != 0) { @@ -625,8 +667,7 @@ static void print_counter_aggr(struct perf_evsel *counter) avg_enabled = avg_stats(&ps->res_stats[1]); avg_running = avg_stats(&ps->res_stats[2]); - fprintf(stderr, " (scaled from %.2f%%)", - 100 * avg_running / avg_enabled); + fprintf(stderr, " (%.2f%%)", 100 * avg_running / avg_enabled); } fprintf(stderr, "\n"); } @@ -668,10 +709,8 @@ static void print_counter(struct perf_evsel *counter) if (!csv_output) { print_noise(counter, 1.0); - if (run != ena) { - fprintf(stderr, " (scaled from %.2f%%)", - 100.0 * run / ena); - } + if (run != ena) + fprintf(stderr, " (%.2f%%)", 100.0 * run / ena); } fputc('\n', stderr); } @@ -778,6 +817,8 @@ static const struct option options[] = { "repeat command and print average + stddev (max: 100)"), OPT_BOOLEAN('n', "null", &null_run, "null run - dont start any counters"), + OPT_BOOLEAN('d', "detailed", &detailed_run, + "detailed run - start a lot of events"), OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, "print large numbers with thousands\' separators", stat__set_big_num), @@ -839,7 +880,18 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used) } /* Set attrs and nr_counters if no event is selected and !null_run */ - if (!null_run && !evsel_list->nr_entries) { + if (detailed_run) { + size_t c; + + for (c = 0; c < ARRAY_SIZE(detailed_attrs); ++c) { + pos = perf_evsel__new(&detailed_attrs[c], c); + if (pos == NULL) + goto out; + perf_evlist__add(evsel_list, pos); + } + } + /* Set attrs and nr_counters if no event is selected and !null_run */ + if (!detailed_run && !null_run && !evsel_list->nr_entries) { size_t c; for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) { |