Messages in this thread Patch in this message | | | From | kan.liang@intel ... | Subject | [PATCH V8 5/7] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY% in report -D | Date | Thu, 3 Sep 2015 08:31:01 -0400 |
| |
From: Kan Liang <kan.liang@intel.com>
The group read results from cycles/ref-cycles/TSC/ASTATE/MSTATE event can be used to calculate the frequency, CPU Utilization and percent performance during each sampling period. This patch shows them in report -D.
Here is an example:
$ perf record --freq-perf ~/tchain_edit
Here is one sample from perf report -D
1972044565107 0x3498 [0x88]: PERF_RECORD_SAMPLE(IP, 0x2): 10608/10608: 0x4005fd period: 564686 addr: 0 ... sample_read: .... group nr 5 ..... id 0000000000000012, value 0000000002143901 ..... id 0000000000000052, value 0000000002143896 ..... id 0000000000000094, value 00000000021e443d ..... id 00000000000000d4, value 00000000021db984 ..... id 0000000000000114, value 00000000021db964 ..... Freq 2301 MHz ..... CPU% 98% ..... CORE_BUSY% 99%
Signed-off-by: Kan Liang <kan.liang@intel.com> --- tools/perf/util/session.c | 28 +++++++++++++++++++++--- tools/perf/util/session.h | 54 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 79 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 23fed17..ba763f7 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -7,7 +7,6 @@ #include <sys/mman.h> #include "evlist.h" -#include "evsel.h" #include "session.h" #include "tool.h" #include "sort.h" @@ -878,8 +877,15 @@ static void perf_evlist__print_tstamp(struct perf_evlist *evlist, printf("%" PRIu64 " ", sample->time); } -static void sample_read__printf(struct perf_sample *sample, u64 read_format) +static void sample_read__printf(struct perf_sample *sample, + struct perf_evsel *evsel) { + u64 read_format = evsel->attr.read_format; + struct perf_evlist *evlist = evsel->evlist; + struct perf_sample_id *sid; + perf_freq_t data = { 0 }; + u64 cpu_max_freq = evlist->env->cpuattr.max_freq; + printf("... sample_read:\n"); if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) @@ -902,10 +908,26 @@ static void sample_read__printf(struct perf_sample *sample, u64 read_format) printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", value->id, value->value); + + sid = perf_evlist__id2sid(evlist, value->id); + evsel = sid->evsel; + if (evsel != NULL) + perf_freq__init(evlist->env->msr_pmu_type, + evsel, data, value->value); } } else printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n", sample->read.one.id, sample->read.one.value); + + if (perf_freq__has_freq(data)) + printf("..... Freq %lu MHz\n", + perf_freq__get_freq(data, cpu_max_freq/1000)); + if (perf_freq__has_cpu_util(data)) + printf("..... CPU%% %lu%%\n", + perf_freq__get_cpu_util(data)); + if (perf_freq__has_core_busy(data)) + printf("..... CORE_BUSY%% %lu%%\n", + perf_freq__get_core_busy(data)); } static void dump_event(struct perf_evlist *evlist, union perf_event *event, @@ -965,7 +987,7 @@ static void dump_sample(struct perf_evsel *evsel, union perf_event *event, printf("... transaction: %" PRIx64 "\n", sample->transaction); if (sample_type & PERF_SAMPLE_READ) - sample_read__printf(sample, evsel->attr.read_format); + sample_read__printf(sample, evsel); } static struct machine *machines__find_for_cpumode(struct machines *machines, diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 3915be7..83bf4a9 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -11,6 +11,7 @@ #include "ordered-events.h" #include <linux/rbtree.h> #include <linux/perf_event.h> +#include "evsel.h" struct ip_callchain; struct thread; @@ -42,6 +43,10 @@ struct perf_session { #define PRINT_IP_OPT_ONELINE (1<<4) #define PRINT_IP_OPT_SRCLINE (1<<5) +#define PERF_MSR_TSC 0 +#define PERF_MSR_APERF 1 +#define PERF_MSR_MPERF 2 + enum perf_freq_perf_index { FREQ_PERF_TSC = 0, FREQ_PERF_APERF = 1, @@ -52,6 +57,55 @@ enum perf_freq_perf_index { FREQ_PERF_MAX }; +typedef u64 perf_freq_t[FREQ_PERF_MAX]; + +static inline void perf_freq__init(unsigned int msr_pmu_type, + struct perf_evsel *evsel, + perf_freq_t array, + u64 value) +{ + if (evsel->attr.type == msr_pmu_type) { + if (evsel->attr.config == PERF_MSR_TSC) + array[FREQ_PERF_TSC] = value; + if (evsel->attr.config == PERF_MSR_APERF) + array[FREQ_PERF_APERF] = value; + if (evsel->attr.config == PERF_MSR_MPERF) + array[FREQ_PERF_MPERF] = value; + } + if (evsel->attr.type == PERF_TYPE_HARDWARE) { + if (evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES) + array[FREQ_PERF_CYCLES] = value; + if (evsel->attr.config == PERF_COUNT_HW_REF_CPU_CYCLES) + array[FREQ_PERF_REF_CYCLES] = value; + } +} + +static inline bool perf_freq__has_freq(perf_freq_t array) +{ + return ((array[FREQ_PERF_CYCLES] > 0) && (array[FREQ_PERF_REF_CYCLES] > 0)); +} +static inline u64 perf_freq__get_freq(perf_freq_t array, u64 cpu_max_freq) +{ + return ((array[FREQ_PERF_CYCLES] * cpu_max_freq) / array[FREQ_PERF_REF_CYCLES]); +} +static inline bool perf_freq__has_cpu_util(perf_freq_t array) +{ + return ((array[FREQ_PERF_TSC] > 0) && (array[FREQ_PERF_REF_CYCLES] > 0)); +} +static inline u64 perf_freq__get_cpu_util(perf_freq_t array) +{ + return ((100 * array[FREQ_PERF_REF_CYCLES]) / array[FREQ_PERF_TSC]); +} + +static inline bool perf_freq__has_core_busy(perf_freq_t array) +{ + return ((array[FREQ_PERF_APERF] > 0) && (array[FREQ_PERF_MPERF] > 0)); +} +static inline u64 perf_freq__get_core_busy(perf_freq_t array) +{ + return ((100 * array[FREQ_PERF_APERF]) / array[FREQ_PERF_MPERF]); +} + struct perf_tool; struct perf_session *perf_session__new(struct perf_data_file *file, -- 1.8.3.1
| |