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Commit7341a8c

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committed
Report test_fynsc times in tests per second, instead of total seconds.
1 parenta520b78 commit7341a8c

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1 file changed

+32
-23
lines changed

1 file changed

+32
-23
lines changed

‎src/tools/fsync/test_fsync.c

Lines changed: 32 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
/*
2-
* $PostgreSQL: pgsql/src/tools/fsync/test_fsync.c,v 1.27 2010/02/26 02:01:39 momjian Exp $
2+
* $PostgreSQL: pgsql/src/tools/fsync/test_fsync.c,v 1.28 2010/07/0401:50:29 momjian Exp $
33
*
44
*
55
*test_fsync.c
@@ -34,6 +34,8 @@
3434

3535
#defineLABEL_FORMAT"\t%-30s"
3636

37+
intloops=10000;
38+
3739
voiddie(char*str);
3840
voidprint_elapse(structtimevalstart_t,structtimevalstop_t);
3941

@@ -43,8 +45,7 @@ main(int argc, char *argv[])
4345
structtimevalstart_t;
4446
structtimevalstop_t;
4547
inttmpfile,
46-
i,
47-
loops=5000;
48+
i;
4849
char*full_buf= (char*)malloc(XLOG_SEG_SIZE),
4950
*buf;
5051
char*filename=FSYNC_FILENAME;
@@ -73,10 +74,12 @@ main(int argc, char *argv[])
7374

7475
buf= (char*)TYPEALIGN(ALIGNOF_XLOG_BUFFER,full_buf);
7576

77+
printf("Loops = %d\n\n",loops);
78+
7679
/*
7780
* Simple write
7881
*/
79-
printf("Simple8kwrite timing:\n");
82+
printf("Simple write timing:\n");
8083
/* write only */
8184
gettimeofday(&start_t,NULL);
8285
for (i=0;i<loops;i++)
@@ -88,13 +91,13 @@ main(int argc, char *argv[])
8891
close(tmpfile);
8992
}
9093
gettimeofday(&stop_t,NULL);
91-
printf(LABEL_FORMAT,"write");
94+
printf(LABEL_FORMAT,"8kwrite");
9295
print_elapse(start_t,stop_t);
9396

9497
/*
9598
* Compare file sync methods with one 8k write
9699
*/
97-
printf("\nCompare file sync methods using one8kwrite:\n");
100+
printf("\nCompare file sync methods using one write:\n");
98101

99102
#ifdefOPEN_DATASYNC_FLAG
100103
/* open_dsync, write */
@@ -110,7 +113,7 @@ main(int argc, char *argv[])
110113
}
111114
gettimeofday(&stop_t,NULL);
112115
close(tmpfile);
113-
printf(LABEL_FORMAT,"open_datasync write");
116+
printf(LABEL_FORMAT,"open_datasync8kwrite");
114117
print_elapse(start_t,stop_t);
115118
#else
116119
printf("\t(open_datasync unavailable)\n");
@@ -130,7 +133,7 @@ main(int argc, char *argv[])
130133
}
131134
gettimeofday(&stop_t,NULL);
132135
close(tmpfile);
133-
printf(LABEL_FORMAT,"open_sync write");
136+
printf(LABEL_FORMAT,"open_sync8kwrite");
134137
print_elapse(start_t,stop_t);
135138
#else
136139
printf("\t(open_sync unavailable)\n");
@@ -151,7 +154,7 @@ main(int argc, char *argv[])
151154
}
152155
gettimeofday(&stop_t,NULL);
153156
close(tmpfile);
154-
printf(LABEL_FORMAT,"write, fdatasync");
157+
printf(LABEL_FORMAT,"8kwrite, fdatasync");
155158
print_elapse(start_t,stop_t);
156159
#else
157160
printf("\t(fdatasync unavailable)\n");
@@ -172,13 +175,13 @@ main(int argc, char *argv[])
172175
}
173176
gettimeofday(&stop_t,NULL);
174177
close(tmpfile);
175-
printf(LABEL_FORMAT,"write, fsync");
178+
printf(LABEL_FORMAT,"8kwrite, fsync");
176179
print_elapse(start_t,stop_t);
177180

178181
/*
179182
* Compare file sync methods with two 8k write
180183
*/
181-
printf("\nCompare file sync methods using two8kwrites:\n");
184+
printf("\nCompare file sync methods using two writes:\n");
182185

183186
#ifdefOPEN_DATASYNC_FLAG
184187
/* open_dsync, write */
@@ -196,7 +199,7 @@ main(int argc, char *argv[])
196199
}
197200
gettimeofday(&stop_t,NULL);
198201
close(tmpfile);
199-
printf(LABEL_FORMAT,"open_datasyncwrite, write");
202+
printf(LABEL_FORMAT,"2open_datasync8k writes");
200203
print_elapse(start_t,stop_t);
201204
#else
202205
printf("\t(open_datasync unavailable)\n");
@@ -218,7 +221,7 @@ main(int argc, char *argv[])
218221
}
219222
gettimeofday(&stop_t,NULL);
220223
close(tmpfile);
221-
printf(LABEL_FORMAT,"open_syncwrite, write");
224+
printf(LABEL_FORMAT,"2open_sync8k writes");
222225
print_elapse(start_t,stop_t);
223226
#endif
224227

@@ -239,7 +242,7 @@ main(int argc, char *argv[])
239242
}
240243
gettimeofday(&stop_t,NULL);
241244
close(tmpfile);
242-
printf(LABEL_FORMAT,"write, write, fdatasync");
245+
printf(LABEL_FORMAT,"8kwrite, 8k write, fdatasync");
243246
print_elapse(start_t,stop_t);
244247
#else
245248
printf("\t(fdatasync unavailable)\n");
@@ -262,7 +265,7 @@ main(int argc, char *argv[])
262265
}
263266
gettimeofday(&stop_t,NULL);
264267
close(tmpfile);
265-
printf(LABEL_FORMAT,"write, write, fsync");
268+
printf(LABEL_FORMAT,"8kwrite, 8k write, fsync");
266269
print_elapse(start_t,stop_t);
267270

268271
/*
@@ -284,7 +287,7 @@ main(int argc, char *argv[])
284287
}
285288
gettimeofday(&stop_t,NULL);
286289
close(tmpfile);
287-
printf(LABEL_FORMAT,"16kopen_sync write");
290+
printf(LABEL_FORMAT,"open_sync 16k write");
288291
print_elapse(start_t,stop_t);
289292

290293
/* Two 8k open_sync writes */
@@ -302,7 +305,7 @@ main(int argc, char *argv[])
302305
}
303306
gettimeofday(&stop_t,NULL);
304307
close(tmpfile);
305-
printf(LABEL_FORMAT,"28kopen_sync writes");
308+
printf(LABEL_FORMAT,"2 open_sync 8k writes");
306309
print_elapse(start_t,stop_t);
307310
#else
308311
printf("\t(open_sync unavailable)\n");
@@ -311,8 +314,9 @@ main(int argc, char *argv[])
311314
/*
312315
* Fsync another file descriptor?
313316
*/
314-
printf("\nCompare fsync times on write() and new file descriptors (if the times\n");
315-
printf("are similar, fsync() can sync data written on a different descriptor):\n");
317+
printf("\nTest if fsync on non-write file descriptor is honored:\n");
318+
printf("(If the times are similar, fsync() can sync data written\n");
319+
printf("on a different descriptor.)\n");
316320

317321
/* write, fsync, close */
318322
gettimeofday(&start_t,NULL);
@@ -331,7 +335,7 @@ main(int argc, char *argv[])
331335
close(tmpfile);
332336
}
333337
gettimeofday(&stop_t,NULL);
334-
printf(LABEL_FORMAT,"write, fsync, close");
338+
printf(LABEL_FORMAT,"8kwrite, fsync, close");
335339
print_elapse(start_t,stop_t);
336340

337341
/* write, close, fsync */
@@ -351,7 +355,7 @@ main(int argc, char *argv[])
351355
close(tmpfile);
352356
}
353357
gettimeofday(&stop_t,NULL);
354-
printf(LABEL_FORMAT,"write, close, fsync");
358+
printf(LABEL_FORMAT,"8kwrite, close, fsync");
355359
print_elapse(start_t,stop_t);
356360

357361
/* cleanup */
@@ -364,14 +368,19 @@ main(int argc, char *argv[])
364368
void
365369
print_elapse(structtimevalstart_t,structtimevalstop_t)
366370
{
371+
doubletotal_time,per_second;
372+
367373
if (stop_t.tv_usec<start_t.tv_usec)
368374
{
369375
stop_t.tv_sec--;
370376
stop_t.tv_usec+=1000000;
371377
}
372378

373-
printf("%3ld.%06ld\n", (long) (stop_t.tv_sec-start_t.tv_sec),
374-
(long) (stop_t.tv_usec-start_t.tv_usec));
379+
total_time= (stop_t.tv_sec-start_t.tv_sec)+
380+
(stop_t.tv_usec-start_t.tv_usec)*0.000001;
381+
per_second=loops /total_time;
382+
383+
printf("%9.3f/second\n",per_second);
375384
}
376385

377386
void

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