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authorIngo Molnar <mingo@elte.hu>2009-05-30 06:38:51 -0400
committerIngo Molnar <mingo@elte.hu>2009-05-30 06:41:12 -0400
commitd7c29318c2daa96d64b7312afd8283488c1cb29f (patch)
tree4cfaddbe76b0670941b77ed093380efef310f822
parentc44613a4c1092e85841b78b7ab52a06654fcd321 (diff)
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>
-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 ef7e0e1192cb..588679167c88 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];
75static __u64 event_scaled[MAX_COUNTERS]; 75static __u64 event_scaled[MAX_COUNTERS];
76 76
77static __u64 runtime_nsecs; 77static __u64 runtime_nsecs;
78static __u64 walltime_nsecs;
78 79
79static void create_perfstat_counter(int counter) 80static void create_perfstat_counter(int counter)
80{ 81{
@@ -194,13 +195,19 @@ static void print_counter(int counter)
194 if (nsec_counter(counter)) { 195 if (nsec_counter(counter)) {
195 double msecs = (double)count[0] / 1000000; 196 double msecs = (double)count[0] / 1000000;
196 197
197 fprintf(stderr, " %14.6f %-20s (msecs)", 198 fprintf(stderr, " %14.6f %-20s",
198 msecs, event_name(counter)); 199 msecs, event_name(counter));
200 if (event_id[counter] ==
201 EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK)) {
202
203 fprintf(stderr, " # %11.3f CPU utilization factor",
204 (double)count[0] / (double)walltime_nsecs);
205 }
199 } else { 206 } else {
200 fprintf(stderr, " %14Ld %-20s", 207 fprintf(stderr, " %14Ld %-20s",
201 count[0], event_name(counter)); 208 count[0], event_name(counter));
202 if (runtime_nsecs) 209 if (runtime_nsecs)
203 fprintf(stderr, " # %12.3f M/sec", 210 fprintf(stderr, " # %11.3f M/sec",
204 (double)count[0]/runtime_nsecs*1000.0); 211 (double)count[0]/runtime_nsecs*1000.0);
205 } 212 }
206 if (scaled) 213 if (scaled)
@@ -241,6 +248,8 @@ static int do_perfstat(int argc, const char **argv)
241 prctl(PR_TASK_PERF_COUNTERS_DISABLE); 248 prctl(PR_TASK_PERF_COUNTERS_DISABLE);
242 t1 = rdclock(); 249 t1 = rdclock();
243 250
251 walltime_nsecs = t1 - t0;
252
244 fflush(stdout); 253 fflush(stdout);
245 254
246 fprintf(stderr, "\n"); 255 fprintf(stderr, "\n");