diff options
Diffstat (limited to 'contrib/pg_test_timing/pg_test_timing.c')
| -rw-r--r-- | contrib/pg_test_timing/pg_test_timing.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/contrib/pg_test_timing/pg_test_timing.c b/contrib/pg_test_timing/pg_test_timing.c index 191c621376e..0bf9127e105 100644 --- a/contrib/pg_test_timing/pg_test_timing.c +++ b/contrib/pg_test_timing/pg_test_timing.c @@ -18,7 +18,7 @@ static uint64 test_timing(int32); static void output(uint64 loop_count); /* record duration in powers of 2 microseconds */ -int64 histogram[32]; +int64 histogram[32]; int main(int argc, char *argv[]) @@ -110,8 +110,11 @@ test_timing(int32 duration) uint64 total_time; int64 time_elapsed = 0; uint64 loop_count = 0; - uint64 prev, cur; - instr_time start_time, end_time, temp; + uint64 prev, + cur; + instr_time start_time, + end_time, + temp; total_time = duration > 0 ? duration * 1000000 : 0; @@ -120,7 +123,8 @@ test_timing(int32 duration) while (time_elapsed < total_time) { - int32 diff, bits = 0; + int32 diff, + bits = 0; prev = cur; INSTR_TIME_SET_CURRENT(temp); @@ -163,12 +167,13 @@ test_timing(int32 duration) static void output(uint64 loop_count) { - int64 max_bit = 31, i; + int64 max_bit = 31, + i; /* find highest bit value */ while (max_bit > 0 && histogram[max_bit] == 0) max_bit--; - + printf("Histogram of timing durations:\n"); printf("%6s %10s %10s\n", "< usec", "% of total", "count"); @@ -179,6 +184,6 @@ output(uint64 loop_count) /* lame hack to work around INT64_FORMAT deficiencies */ snprintf(buf, sizeof(buf), INT64_FORMAT, histogram[i]); printf("%6ld %9.5f %10s\n", 1l << i, - (double) histogram[i] * 100 / loop_count, buf); + (double) histogram[i] * 100 / loop_count, buf); } } |