1 files changed, 34 insertions, 12 deletions

diff --git a/src/pulsecore/svolume_sse.c b/src/pulsecore/svolume_sse.c
index ef07a243..8fed69b2 100644
--- a/src/pulsecore/svolume_sse.c
+++ b/src/pulsecore/svolume_sse.c
@@ -253,6 +253,7 @@ static void pa_volume_s16re_sse2(int16_t *samples, int32_t *volumes, unsigned ch
 #define CHANNELS 2
 #define SAMPLES 1022
 #define TIMES 1000
+#define TIMES2 100
 #define PADDING 16
 
 static void run_test(void) {
@@ -263,6 +264,9 @@ static void run_test(void) {
     int i, j, padding;
     pa_do_volume_func_t func;
     pa_usec_t start, stop;
+    int k;
+    pa_usec_t min = INT_MAX, max = 0;
+    double s1 = 0, s2 = 0;
 
     func = pa_get_volume_func(PA_SAMPLE_S16NE);
 
@@ -286,21 +290,39 @@ static void run_test(void) {
         }
     }
 
-    start = pa_rtclock_now();
-    for (j = 0; j < TIMES; j++) {
-        memcpy(samples, samples_orig, sizeof(samples));
-        pa_volume_s16ne_sse2(samples, volumes, CHANNELS, sizeof(samples));
+    for (k = 0; k < TIMES2; k++) {
+        start = pa_rtclock_now();
+        for (j = 0; j < TIMES; j++) {
+            memcpy(samples, samples_orig, sizeof(samples));
+            pa_volume_s16ne_sse2(samples, volumes, CHANNELS, sizeof(samples));
+        }
+        stop = pa_rtclock_now();
+
+        if (min > (stop - start)) min = stop - start;
+        if (max < (stop - start)) max = stop - start;
+        s1 += stop - start;
+        s2 += (stop - start) * (stop - start);
     }
-    stop = pa_rtclock_now();
-    pa_log_info("SSE: %llu usec.", (long long unsigned int)(stop - start));
+    pa_log_info("SSE: %llu usec (min = %llu, max = %llu, stddev = %g).", (long long unsigned int)s1,
+            (long long unsigned int)min, (long long unsigned int)max, sqrt(TIMES2 * s2 - s1 * s1) / TIMES2);
+
+    min = INT_MAX; max = 0;
+    s1 = s2 = 0;
+    for (k = 0; k < TIMES2; k++) {
+        start = pa_rtclock_now();
+        for (j = 0; j < TIMES; j++) {
+            memcpy(samples_ref, samples_orig, sizeof(samples));
+            func(samples_ref, volumes, CHANNELS, sizeof(samples));
+        }
+        stop = pa_rtclock_now();
 
-    start = pa_rtclock_now();
-    for (j = 0; j < TIMES; j++) {
-        memcpy(samples_ref, samples_orig, sizeof(samples));
-        func(samples_ref, volumes, CHANNELS, sizeof (samples));
+        if (min > (stop - start)) min = stop - start;
+        if (max < (stop - start)) max = stop - start;
+        s1 += stop - start;
+        s2 += (stop - start) * (stop - start);
     }
-    stop = pa_rtclock_now();
-    pa_log_info("ref: %llu usec.", (long long unsigned int)(stop - start));
+    pa_log_info("ref: %llu usec (min = %llu, max = %llu, stddev = %g).", (long long unsigned int)s1,
+            (long long unsigned int)min, (long long unsigned int)max, sqrt(TIMES2 * s2 - s1 * s1) / TIMES2);
 
     pa_assert_se(memcmp(samples_ref, samples, sizeof(samples)) == 0);
 }