open-dsi
/
postgres
mirror of https://github.com/postgres/postgres
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Modify pg_test_fsync to match the behavior of git head in regards to

Browse Source 
O_DIRECT behavior.
pull/1/head
Bruce Momjian 15 years ago
parent 5ca543fb2e
commit 303b7fcd10
1 changed files with 27 additions and 81 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 108
      contrib/pg_test_fsync/pg_test_fsync.c

108
contrib/pg_test_fsync/pg_test_fsync.c
Unescape View File

@ -23,7 +23,7 @@
#define XLOG_BLCKSZ_K (XLOG_BLCKSZ / 1024)
#define LABEL_FORMAT " %-32s"
#define NA_FORMAT LABEL_FORMAT "%18s"
#define NA_FORMAT "%18s"
#define OPS_FORMAT "%9.3f ops/sec"
static const char *progname;
@ -134,6 +134,11 @@ handle_args(int argc, char *argv[])
}
printf("%d operations per test\n", ops_per_test);
#if PG_O_DIRECT != 0
printf("O_DIRECT supported on this platform for open_datasync and open_sync.\n");
#else
printf("Direct I/O is not supported on this platform.\n");
#endif
}
static void
@ -184,43 +189,19 @@ test_sync(int writes_per_op)
/*
* Test open_datasync if available
*/
#ifdef OPEN_DATASYNC_FLAG
printf(LABEL_FORMAT, "open_datasync"
#if PG_O_DIRECT != 0
" (non-direct I/O)*"
#endif
);
printf(LABEL_FORMAT, "open_datasync");
fflush(stdout);
if ((tmpfile = open(filename, O_RDWR | O_DSYNC, 0)) == -1)
die("could not open output file");
gettimeofday(&start_t, NULL);
for (ops = 0; ops < ops_per_test; ops++)
{
for (writes = 0; writes < writes_per_op; writes++)
if (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
die("write failed");
if (lseek(tmpfile, 0, SEEK_SET) == -1)
die("seek failed");
}
gettimeofday(&stop_t, NULL);
close(tmpfile);
print_elapse(start_t, stop_t);
/*
* If O_DIRECT is enabled, test that with open_datasync
*/
#if PG_O_DIRECT != 0
#ifdef OPEN_DATASYNC_FLAG
if ((tmpfile = open(filename, O_RDWR | O_DSYNC | PG_O_DIRECT, 0)) == -1)
{
printf(NA_FORMAT, "o_direct", "n/a**\n");
printf(NA_FORMAT, "n/a*\n");
fs_warning = true;
}
else
{
printf(LABEL_FORMAT, "open_datasync (direct I/O)");
fflush(stdout);
if ((tmpfile = open(filename, O_RDWR | O_DSYNC | PG_O_DIRECT, 0)) == -1)
die("could not open output file");
gettimeofday(&start_t, NULL);
for (ops = 0; ops < ops_per_test; ops++)
{
@ -234,19 +215,17 @@ test_sync(int writes_per_op)
close(tmpfile);
print_elapse(start_t, stop_t);
}
#endif
#else
printf(NA_FORMAT, "open_datasync", "n/a\n");
printf(NA_FORMAT, "n/a\n");
#endif
/*
* Test fdatasync if available
*/
#ifdef HAVE_FDATASYNC
printf(LABEL_FORMAT, "fdatasync");
fflush(stdout);
#ifdef HAVE_FDATASYNC
if ((tmpfile = open(filename, O_RDWR, 0)) == -1)
die("could not open output file");
gettimeofday(&start_t, NULL);
@ -263,7 +242,7 @@ test_sync(int writes_per_op)
close(tmpfile);
print_elapse(start_t, stop_t);
#else
printf(NA_FORMAT, "fdatasync", "n/a\n");
printf(NA_FORMAT, "n/a\n");
#endif
/*
@ -292,10 +271,10 @@ test_sync(int writes_per_op)
/*
* If fsync_writethrough is available, test as well
*/
#ifdef HAVE_FSYNC_WRITETHROUGH
printf(LABEL_FORMAT, "fsync_writethrough");
fflush(stdout);
#ifdef HAVE_FSYNC_WRITETHROUGH
if ((tmpfile = open(filename, O_RDWR, 0)) == -1)
die("could not open output file");
gettimeofday(&start_t, NULL);
@ -313,49 +292,23 @@ test_sync(int writes_per_op)
close(tmpfile);
print_elapse(start_t, stop_t);
#else
printf(NA_FORMAT, "fsync_writethrough", "n/a\n");
printf(NA_FORMAT, "n/a\n");
#endif
/*
* Test open_sync if available
*/
#ifdef OPEN_SYNC_FLAG
printf(LABEL_FORMAT, "open_sync"
#if PG_O_DIRECT != 0
" (non-direct I/O)*"
#endif
);
printf(LABEL_FORMAT, "open_sync");
fflush(stdout);
if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG, 0)) == -1)
die("could not open output file");
gettimeofday(&start_t, NULL);
for (ops = 0; ops < ops_per_test; ops++)
{
for (writes = 0; writes < writes_per_op; writes++)
if (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
die("write failed");
if (lseek(tmpfile, 0, SEEK_SET) == -1)
die("seek failed");
}
gettimeofday(&stop_t, NULL);
close(tmpfile);
print_elapse(start_t, stop_t);
/*
* If O_DIRECT is enabled, test that with open_sync
*/
#if PG_O_DIRECT != 0
#ifdef OPEN_SYNC_FLAG
if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG | PG_O_DIRECT, 0)) == -1)
{
printf(NA_FORMAT, "o_direct", "n/a**\n");
printf(NA_FORMAT, "n/a*\n");
fs_warning = true;
}
else
{
printf(LABEL_FORMAT, "open_sync (direct I/O)");
fflush(stdout);
gettimeofday(&start_t, NULL);
for (ops = 0; ops < ops_per_test; ops++)
{
@ -369,20 +322,13 @@ test_sync(int writes_per_op)
close(tmpfile);
print_elapse(start_t, stop_t);
}
#endif
#else
printf(NA_FORMAT, "open_sync", "n/a\n");
#endif
#if defined(OPEN_DATASYNC_FLAG) || defined(OPEN_SYNC_FLAG)
if (PG_O_DIRECT != 0)
printf("* This non-direct I/O mode is not used by Postgres.\n");
printf(NA_FORMAT, "n/a\n");
#endif
if (fs_warning)
{
printf("** This file system and its mount options do not support direct\n");
printf("* This file system and its mount options do not support direct\n");
printf("I/O, e.g. ext4 in journaled mode.\n");
}
}
@ -407,16 +353,16 @@ test_open_syncs(void)
static void
test_open_sync(const char *msg, int writes_size)
{
#ifdef OPEN_SYNC_FLAG
int tmpfile, ops, writes;
printf(LABEL_FORMAT, msg);
fflush(stdout);
#ifdef OPEN_SYNC_FLAG
if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG | PG_O_DIRECT, 0)) == -1)
printf(NA_FORMAT, "o_direct", "n/a**\n");
printf(NA_FORMAT, "n/a*\n");
else
{
printf(LABEL_FORMAT, msg);
fflush(stdout);
gettimeofday(&start_t, NULL);
for (ops = 0; ops < ops_per_test; ops++)
{
@ -433,7 +379,7 @@ test_open_sync(const char *msg, int writes_size)
}
#else
printf(NA_FORMAT, "open_sync", "n/a\n");
printf(NA_FORMAT, "n/a\n");
#endif
}

Write Preview
Loading…
Cancel
Save