mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-30 19:31:14 +02:00
Update error message and documentation for fsync test.
This commit is contained in:
parent
46117e4f2a
commit
558c4367e7
@ -2,4 +2,5 @@ This program tests fsync. The tests are described as part of the program output
|
||||
|
||||
Usage: test_fsync [-f filename] [loops]
|
||||
|
||||
Loops defaults to 1000.
|
||||
Loops defaults to 1000. The default output file is /var/tmp/test_fsync.out.
|
||||
Consider that /tmp or /var/tmp might be memory-based file systems.
|
||||
|
@ -59,7 +59,7 @@ main(int argc, char *argv[])
|
||||
strout[i] = 'a';
|
||||
|
||||
if ((tmpfile = open(filename, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
write(tmpfile, strout, WAL_FILE_SIZE);
|
||||
fsync(tmpfile); /* fsync so later fsync's don't have to do it */
|
||||
close(tmpfile);
|
||||
@ -70,7 +70,7 @@ main(int argc, char *argv[])
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
write(tmpfile, strout, 8192);
|
||||
close(tmpfile);
|
||||
}
|
||||
@ -87,12 +87,12 @@ main(int argc, char *argv[])
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
write(tmpfile, strout, 8192);
|
||||
fsync(tmpfile);
|
||||
close(tmpfile);
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
/* do nothing but the open/close the tests are consistent. */
|
||||
close(tmpfile);
|
||||
}
|
||||
@ -106,12 +106,12 @@ main(int argc, char *argv[])
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
write(tmpfile, strout, 8192);
|
||||
close(tmpfile);
|
||||
/* reopen file */
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
fsync(tmpfile);
|
||||
close(tmpfile);
|
||||
}
|
||||
@ -124,7 +124,7 @@ main(int argc, char *argv[])
|
||||
|
||||
/* 16k o_sync write */
|
||||
if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
write(tmpfile, strout, 16384);
|
||||
@ -136,7 +136,7 @@ main(int argc, char *argv[])
|
||||
|
||||
/* 2*8k o_sync writes */
|
||||
if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
@ -154,7 +154,7 @@ main(int argc, char *argv[])
|
||||
#ifdef OPEN_DATASYNC_FLAG
|
||||
/* open_dsync, write */
|
||||
if ((tmpfile = open(filename, O_RDWR | O_DSYNC)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
write(tmpfile, strout, 8192);
|
||||
@ -169,7 +169,7 @@ main(int argc, char *argv[])
|
||||
|
||||
/* open_fsync, write */
|
||||
if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
write(tmpfile, strout, 8192);
|
||||
@ -182,7 +182,7 @@ main(int argc, char *argv[])
|
||||
#ifdef HAVE_FDATASYNC
|
||||
/* write, fdatasync */
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
@ -200,7 +200,7 @@ main(int argc, char *argv[])
|
||||
|
||||
/* write, fsync, close */
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
@ -218,7 +218,7 @@ main(int argc, char *argv[])
|
||||
#ifdef OPEN_DATASYNC_FLAG
|
||||
/* open_dsync, write */
|
||||
if ((tmpfile = open(filename, O_RDWR | O_DSYNC)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
@ -236,7 +236,7 @@ main(int argc, char *argv[])
|
||||
|
||||
/* open_fsync, write */
|
||||
if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
@ -252,7 +252,7 @@ main(int argc, char *argv[])
|
||||
#ifdef HAVE_FDATASYNC
|
||||
/* write, fdatasync */
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
@ -271,7 +271,7 @@ main(int argc, char *argv[])
|
||||
|
||||
/* write, fsync, close */
|
||||
if ((tmpfile = open(filename, O_RDWR)) == -1)
|
||||
die("can't open /var/tmp/test_fsync.out");
|
||||
die("Cannot open output file.");
|
||||
gettimeofday(&start_t, NULL);
|
||||
for (i = 0; i < loops; i++)
|
||||
{
|
||||
@ -306,6 +306,6 @@ print_elapse(struct timeval start_t, struct timeval elapse_t)
|
||||
void
|
||||
die(char *str)
|
||||
{
|
||||
fprintf(stderr, "%s", str);
|
||||
fprintf(stderr, "%s\n", str);
|
||||
exit(1);
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user