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| author | Andi Kleen <ak@linux.intel.com> | 2016-02-29 14:36:22 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-03-03 11:10:36 -0300 |
| commit | 44d49a6002595ccb95712e86ad2857cd55207602 (patch) | |
| tree | a908486dce7aba6f12062614ca5699ce401ecc11 /tools/perf/util/stat-shadow.c | |
| parent | 92a61f6412d3a09d6462252a522fa79c9290f405 (diff) | |
| download | lwn-44d49a6002595ccb95712e86ad2857cd55207602.tar.gz lwn-44d49a6002595ccb95712e86ad2857cd55207602.zip | |
perf stat: Support metrics in --per-core/socket mode
Enable metrics printing in --per-core / --per-socket mode. We need to
save the shadow metrics in a unique place. Always use the first CPU in
the aggregation. Then use the same CPU to retrieve the shadow value
later.
Example output:
% perf stat --per-core -a ./BC1s
Performance counter stats for 'system wide':
S0-C0 2 2966.020381 task-clock (msec) # 2.004 CPUs utilized (100.00%)
S0-C0 2 49 context-switches # 0.017 K/sec (100.00%)
S0-C0 2 4 cpu-migrations # 0.001 K/sec (100.00%)
S0-C0 2 467 page-faults # 0.157 K/sec
S0-C0 2 4,599,061,773 cycles # 1.551 GHz (100.00%)
S0-C0 2 9,755,886,883 instructions # 2.12 insn per cycle (100.00%)
S0-C0 2 1,906,272,125 branches # 642.704 M/sec (100.00%)
S0-C0 2 81,180,867 branch-misses # 4.26% of all branches
S0-C1 2 2965.995373 task-clock (msec) # 2.003 CPUs utilized (100.00%)
S0-C1 2 62 context-switches # 0.021 K/sec (100.00%)
S0-C1 2 8 cpu-migrations # 0.003 K/sec (100.00%)
S0-C1 2 281 page-faults # 0.095 K/sec
S0-C1 2 6,347,290 cycles # 0.002 GHz (100.00%)
S0-C1 2 4,654,156 instructions # 0.73 insn per cycle (100.00%)
S0-C1 2 947,121 branches # 0.319 M/sec (100.00%)
S0-C1 2 37,322 branch-misses # 3.94% of all branches
1.480409747 seconds time elapsed
v2: Rebase to older patches
v3: Document shadow cpus. Fix aggr_get_id argument. Fix -A shadows (Jiri)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1456785386-19481-4-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/stat-shadow.c')
| -rw-r--r-- | tools/perf/util/stat-shadow.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 367e220e93d5..5e2d2e34e1bc 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -14,6 +14,13 @@ enum { #define NUM_CTX CTX_BIT_MAX +/* + * AGGR_GLOBAL: Use CPU 0 + * AGGR_SOCKET: Use first CPU of socket + * AGGR_CORE: Use first CPU of core + * AGGR_NONE: Use matching CPU + * AGGR_THREAD: Not supported? + */ static struct stats runtime_nsecs_stats[MAX_NR_CPUS]; static struct stats runtime_cycles_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_stalled_cycles_front_stats[NUM_CTX][MAX_NR_CPUS]; |