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Simplify test_fsync duration computation.

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This commit is contained in:
Bruce Momjian 2010-07-04 13:42:51 +00:00
parent 7341a8cab2
commit 2330d9c147
1 changed files with 6 additions and 13 deletions
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19
src/tools/fsync/test_fsync.c
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@ -1,5 +1,5 @@
/*
* $PostgreSQL: pgsql/src/tools/fsync/test_fsync.c,v 1.28 2010/07/04 01:50:29 momjian Exp $
* $PostgreSQL: pgsql/src/tools/fsync/test_fsync.c,v 1.29 2010/07/04 13:42:51 momjian Exp $
*
*
* test_fsync.c
@ -79,7 +79,7 @@ main(int argc, char *argv[])
/*
* Simple write
*/
printf("Simple write timing:\n");
printf("Simple write:\n");
/* write only */
gettimeofday(&start_t, NULL);
for (i = 0; i < loops; i++)
@ -271,7 +271,7 @@ main(int argc, char *argv[])
/*
* Compare 1 to 2 writes
*/
printf("\nCompare open_sync sizes:\n");
printf("\nCompare open_sync with different sizes:\n");
#ifdef OPEN_SYNC_FLAG
/* 16k open_sync write */
@ -368,17 +368,10 @@ main(int argc, char *argv[])
void
print_elapse(struct timeval start_t, struct timeval stop_t)
{
double total_time, per_second;
if (stop_t.tv_usec < start_t.tv_usec)
{
stop_t.tv_sec--;
stop_t.tv_usec += 1000000;
}
total_time = (stop_t.tv_sec - start_t.tv_sec) +
double total_time = (stop_t.tv_sec - start_t.tv_sec) +
/* usec subtraction might be negative, e.g. 5.4 - 4.8 */
(stop_t.tv_usec - start_t.tv_usec) * 0.000001;
per_second = loops / total_time;
double per_second = loops / total_time;
printf("%9.3f/second\n", per_second);
}