summaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorIngo Molnar <mingo@elte.hu>2009-05-30 12:38:51 +0200
committerIngo Molnar <mingo@elte.hu>2009-05-30 12:41:12 +0200
commitd7c29318c2daa96d64b7312afd8283488c1cb29f (patch)
tree4cfaddbe76b0670941b77ed093380efef310f822 /Documentation
parentc44613a4c1092e85841b78b7ab52a06654fcd321 (diff)
downloadop-kernel-dev-d7c29318c2daa96d64b7312afd8283488c1cb29f.zip
op-kernel-dev-d7c29318c2daa96d64b7312afd8283488c1cb29f.tar.gz
perf_counter tools: Print 'CPU utilization factor' in builtin-stat
Before: Performance counter stats for '/home/mingo/hackbench': 5728.862689 task clock ticks (msecs) 34426 context switches # 0.006 M/sec 3835 CPU migrations # 0.001 M/sec 18158 pagefaults # 0.003 M/sec 16218109156 CPU cycles # 2830.947 M/sec 13519616840 instructions # 2359.913 M/sec 55941661 cache references # 9.765 M/sec 23554938 cache misses # 4.112 M/sec Wall-clock time elapsed: 528.886980 msecs After: Performance counter stats for '/home/mingo/hackbench': 5845.443541 task clock ticks # 11.886 CPU utilization factor 38289 context switches # 0.007 M/sec 4208 CPU migrations # 0.001 M/sec 17755 pagefaults # 0.003 M/sec 16664668576 CPU cycles # 2850.882 M/sec 13468113991 instructions # 2304.036 M/sec 57445468 cache references # 9.827 M/sec 26896502 cache misses # 4.601 M/sec Wall-clock time elapsed: 491.802357 msecs Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: John Kacur <jkacur@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/perf_counter/builtin-stat.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/Documentation/perf_counter/builtin-stat.c b/Documentation/perf_counter/builtin-stat.c
index ef7e0e1..5886791 100644
--- a/Documentation/perf_counter/builtin-stat.c
+++ b/Documentation/perf_counter/builtin-stat.c
@@ -75,6 +75,7 @@ static __u64 event_res[MAX_COUNTERS][3];
static __u64 event_scaled[MAX_COUNTERS];
static __u64 runtime_nsecs;
+static __u64 walltime_nsecs;
static void create_perfstat_counter(int counter)
{
@@ -194,13 +195,19 @@ static void print_counter(int counter)
if (nsec_counter(counter)) {
double msecs = (double)count[0] / 1000000;
- fprintf(stderr, " %14.6f %-20s (msecs)",
+ fprintf(stderr, " %14.6f %-20s",
msecs, event_name(counter));
+ if (event_id[counter] ==
+ EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK)) {
+
+ fprintf(stderr, " # %11.3f CPU utilization factor",
+ (double)count[0] / (double)walltime_nsecs);
+ }
} else {
fprintf(stderr, " %14Ld %-20s",
count[0], event_name(counter));
if (runtime_nsecs)
- fprintf(stderr, " # %12.3f M/sec",
+ fprintf(stderr, " # %11.3f M/sec",
(double)count[0]/runtime_nsecs*1000.0);
}
if (scaled)
@@ -241,6 +248,8 @@ static int do_perfstat(int argc, const char **argv)
prctl(PR_TASK_PERF_COUNTERS_DISABLE);
t1 = rdclock();
+ walltime_nsecs = t1 - t0;
+
fflush(stdout);
fprintf(stderr, "\n");
OpenPOWER on IntegriCloud