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authorIngo Molnar <mingo@elte.hu>2011-04-29 13:49:08 +0200
committerIngo Molnar <mingo@elte.hu>2011-04-29 14:35:55 +0200
commitd3d1e86da07b4565815e3dbcd082f53017d215f8 (patch)
treec2fad06e57607b32d943d6b590325ae5d8ef3d01 /tools/perf/util
parent129c04cb8ce2e4bf3f17223f58ef16aa8a2cb3b8 (diff)
perf stat: Analyze front-end and back-end stall counts
Sample output: Performance counter stats for './loop_1b': 873.691065 task-clock # 1.000 CPUs utilized 1 context-switches # 0.000 M/sec 1 CPU-migrations # 0.000 M/sec 96 page-faults # 0.000 M/sec 2,012,637,222 cycles # 2.304 GHz (66.58%) 1,001,397,911 stalled-cycles-frontend # 49.76% frontend cycles idle (66.58%) 7,523,398 stalled-cycles-backend # 0.37% backend cycles idle (66.76%) 2,004,551,046 instructions # 1.00 insns per cycle # 0.50 stalled cycles per insn (66.80%) 1,001,304,992 branches # 1146.063 M/sec (66.76%) 39,453 branch-misses # 0.00% of all branches (66.64%) 0.874046121 seconds time elapsed Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/n/tip-7y40wib8n003io7hjpn1dsrm@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/parse-events.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 04d2f0a9667..8a407f3e286 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -60,7 +60,7 @@ static struct event_symbol event_symbols[] = {
#define PERF_EVENT_TYPE(config) __PERF_EVENT_FIELD(config, TYPE)
#define PERF_EVENT_ID(config) __PERF_EVENT_FIELD(config, EVENT)
-static const char *hw_event_names[] = {
+static const char *hw_event_names[PERF_COUNT_HW_MAX] = {
"cycles",
"instructions",
"cache-references",
@@ -68,10 +68,11 @@ static const char *hw_event_names[] = {
"branches",
"branch-misses",
"bus-cycles",
- "stalled-cycles",
+ "stalled-cycles-frontend",
+ "stalled-cycles-backend",
};
-static const char *sw_event_names[] = {
+static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
"cpu-clock",
"task-clock",
"page-faults",