Adding new --per-numa option to aggregate counts per NUMA
nodes for system-wide mode measurements.
You can specify --per-numa in live mode:
# perf stat -a -I 1000 -e cycles --per-numa
# time numa cpus counts unit events
1.000542550 N0 20 6,202,097 cycles
1.000542550 N1 20639,559 cycles
2.002040063 N0 20 7,412,495 cycles
2.002040063 N1 20 2,185,577 cycles
3.003451699 N0 20 6,508,917 cycles
3.003451699 N1 20765,607 cycles
...
Or in the record/report stat session:
# perf stat record -a -I 1000 -e cycles
# time counts unit events
1.000536937 10,008,468 cycles
2.002090152 9,578,539 cycles
3.003625233 7,647,869 cycles
4.005135036 7,032,086 cycles
^C 4.340902364 3,923,893 cycles
# perf stat report --per-numa
# time numa cpus counts unit events
1.000536937 N0 20 9,355,086 cycles
1.000536937 N1 20653,382 cycles
2.002090152 N0 20 7,712,838 cycles
2.002090152 N1 20 1,865,701 cycles
3.003625233 N0 20 6,604,441 cycles
3.003625233 N1 20 1,043,428 cycles
4.005135036 N0 20 6,350,522 cycles
4.005135036 N1 20681,564 cycles
4.340902364 N0 20 3,403,188 cycles
4.340902364 N1 20520,705 cycles
Link: http://lkml.kernel.org/n/tip-h57ftv8vmqrgzz3kdvlvh...@git.kernel.org
Signed-off-by: Jiri Olsa
---
tools/perf/Documentation/perf-stat.txt | 5 +++
tools/perf/builtin-stat.c | 52 ++
tools/perf/util/cpumap.c | 18 +
tools/perf/util/cpumap.h | 3 ++
tools/perf/util/stat-display.c | 15
tools/perf/util/stat.c | 1 +
tools/perf/util/stat.h | 1 +
7 files changed, 95 insertions(+)
diff --git a/tools/perf/Documentation/perf-stat.txt
b/tools/perf/Documentation/perf-stat.txt
index 930c51c01201..74299dc2ffd1 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -217,6 +217,11 @@ core number and the number of online logical processors on
that physical process
Aggregate counts per monitored threads, when monitoring threads (-t option)
or processes (-p option).
+--per-numa::
+Aggregate counts per NUMA nodes for system-wide mode measurements. This
+is a useful mode to detect imbalance between NUMA nodes. To enable this
+mode, use --per-numa in addition to -a. (system-wide).
+
-D msecs::
--delay msecs::
After starting the program, wait msecs before measuring. This is useful to
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 5bc0c570b7b6..5c30e9e3de19 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -790,6 +790,8 @@ static struct option stat_options[] = {
"aggregate counts per physical processor core", AGGR_CORE),
OPT_SET_UINT(0, "per-thread", _config.aggr_mode,
"aggregate counts per thread", AGGR_THREAD),
+ OPT_SET_UINT(0, "per-numa", _config.aggr_mode,
+"aggregate counts per numa node", AGGR_NUMA),
OPT_UINTEGER('D', "delay", _config.initial_delay,
"ms to wait before starting measurement after program
start"),
OPT_CALLBACK_NOOPT(0, "metric-only", _config.metric_only, NULL,
@@ -822,6 +824,12 @@ static int perf_stat__get_core(struct perf_stat_config
*config __maybe_unused,
return cpu_map__get_core(map, cpu, NULL);
}
+static int perf_stat__get_numa(struct perf_stat_config *config __maybe_unused,
+ struct perf_cpu_map *map, int cpu)
+{
+ return cpu_map__get_numa(map, cpu, NULL);
+}
+
static int perf_stat__get_aggr(struct perf_stat_config *config,
aggr_get_id_t get_id, struct perf_cpu_map *map,
int idx)
{
@@ -856,6 +864,12 @@ static int perf_stat__get_core_cached(struct
perf_stat_config *config,
return perf_stat__get_aggr(config, perf_stat__get_core, map, idx);
}
+static int perf_stat__get_numa_cached(struct perf_stat_config *config,
+ struct perf_cpu_map *map, int idx)
+{
+ return perf_stat__get_aggr(config, perf_stat__get_numa, map, idx);
+}
+
static bool term_percore_set(void)
{
struct evsel *counter;
@@ -894,6 +908,13 @@ static int perf_stat_init_aggr_mode(void)
}
stat_config.aggr_get_id = perf_stat__get_core_cached;
break;
+ case AGGR_NUMA:
+ if
