pg_test_fsync.c File Reference

#include "postgres_fe.h"
#include <limits.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include "access/xlogdefs.h"
#include "common/logging.h"
#include "common/pg_prng.h"
#include "getopt_long.h"

Include dependency graph for pg_test_fsync.c:

Go to the source code of this file.

Macros
#define	FSYNC_FILENAME   "./pg_test_fsync.out"
#define	XLOG_BLCKSZ_K   (XLOG_BLCKSZ / 1024)
#define	LABEL_FORMAT   " %-30s"
#define	NA_FORMAT   "%21s\n"
#define	OPS_FORMAT   gettext_noop("%13.3f ops/sec %6.0f usecs/op\n")
#define	USECS_SEC   1000000
#define	START_TIMER
#define	STOP_TIMER
#define	die(msg)   pg_fatal("%s: %m", _(msg))

Functions
static void	handle_args (int argc, char *argv[])
static void	prepare_buf (void)
static void	test_open (void)
static void	test_non_sync (void)
static void	test_sync (int writes_per_op)
static void	test_open_syncs (void)
static void	test_open_sync (const char *msg, int writes_size)
static void	test_file_descriptor_sync (void)
static void	process_alarm (SIGNAL_ARGS)
static void	signal_cleanup (SIGNAL_ARGS)
static void	print_elapse (struct timeval start_t, struct timeval stop_t, int ops)
int	main (int argc, char *argv[])
static int	open_direct (const char *path, int flags, mode_t mode)

Variables
static const char *	progname
static unsigned int	secs_per_test = 5
static int	needs_unlink = 0
static char	full_buf [DEFAULT_XLOG_SEG_SIZE]
static char *	buf
static char *	filename = FSYNC_FILENAME
static struct timeval start_t	stop_t
static sig_atomic_t	alarm_triggered = false

Macro Definition Documentation

die

#define die

(

msg

)

pg_fatal("%s: %m", _(msg))

Definition at line 95 of file pg_test_fsync.c.

FSYNC_FILENAME

#define FSYNC_FILENAME   "./pg_test_fsync.out"

Definition at line 25 of file pg_test_fsync.c.

LABEL_FORMAT

#define LABEL_FORMAT   " %-30s"

Definition at line 29 of file pg_test_fsync.c.

NA_FORMAT

#define NA_FORMAT   "%21s\n"

Definition at line 30 of file pg_test_fsync.c.

OPS_FORMAT

#define OPS_FORMAT   gettext_noop("%13.3f ops/sec %6.0f usecs/op\n")

Definition at line 32 of file pg_test_fsync.c.

START_TIMER

#define START_TIMER

Value:

do { \
    alarm_triggered = false; \
    alarm(secs_per_test); \
    gettimeofday(&start_t, NULL); \
} while (0)

Definition at line 37 of file pg_test_fsync.c.

STOP_TIMER

#define STOP_TIMER

Value:

do { \
    gettimeofday(&stop_t, NULL); \
    print_elapse(start_t, stop_t, ops); \
} while (0)

Definition at line 55 of file pg_test_fsync.c.

USECS_SEC

#define USECS_SEC   1000000

Definition at line 33 of file pg_test_fsync.c.

XLOG_BLCKSZ_K

#define XLOG_BLCKSZ_K   (XLOG_BLCKSZ / 1024)

Definition at line 27 of file pg_test_fsync.c.

Function Documentation

handle_args()

static void handle_args ( int  argc, char *  argv[]  )

static

Definition at line 142 of file pg_test_fsync.c.

{
    static struct option long_options[] = {
        {"filename", required_argument, NULL, 'f'},
        {"secs-per-test", required_argument, NULL, 's'},
        {NULL, 0, NULL, 0}
    };
 
    int         option;         /* Command line option */
    int         optindex = 0;   /* used by getopt_long */
    unsigned long optval;       /* used for option parsing */
    char       *endptr;
 
    if (argc > 1)
    {
        if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
        {
            printf(_("Usage: %s [-f FILENAME] [-s SECS-PER-TEST]\n"), progname);
            exit(0);
        }
        if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
        {
            puts("pg_test_fsync (PostgreSQL) " PG_VERSION);
            exit(0);
        }
    }
 
    while ((option = getopt_long(argc, argv, "f:s:",
                                 long_options, &optindex)) != -1)
    {
        switch (option)
        {
            case 'f':
                filename = pg_strdup(optarg);
                break;
 
            case 's':
                errno = 0;
                optval = strtoul(optarg, &endptr, 10);
 
                if (endptr == optarg || *endptr != '\0' ||
                    errno != 0 || optval != (unsigned int) optval)
                {
                    pg_log_error("invalid argument for option %s", "--secs-per-test");
                    pg_log_error_hint("Try \"%s --help\" for more information.", progname);
                    exit(1);
                }
 
                secs_per_test = (unsigned int) optval;
                if (secs_per_test == 0)
                    pg_fatal("%s must be in range %u..%u",
                             "--secs-per-test", 1, UINT_MAX);
                break;
 
            default:
                /* getopt_long already emitted a complaint */
                pg_log_error_hint("Try \"%s --help\" for more information.", progname);
                exit(1);
        }
    }
 
    if (argc > optind)
    {
        pg_log_error("too many command-line arguments (first is \"%s\")",
                     argv[optind]);
        pg_log_error_hint("Try \"%s --help\" for more information.", progname);
        exit(1);
    }
 
    printf(ngettext("%u second per test\n",
                    "%u seconds per test\n",
                    secs_per_test),
           secs_per_test);
#if defined(O_DIRECT)
    printf(_("O_DIRECT supported on this platform for open_datasync and open_sync.\n"));
#elif defined(F_NOCACHE)
    printf(_("F_NOCACHE supported on this platform for open_datasync and open_sync.\n"));
#else
    printf(_("Direct I/O is not supported on this platform.\n"));
#endif
}

References _, exit(), filename, getopt_long(), ngettext, optarg, optind, pg_fatal, pg_log_error, pg_log_error_hint, pg_strdup(), printf, progname, required_argument, and secs_per_test.

Referenced by main().

main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 99 of file pg_test_fsync.c.

{
    pg_logging_init(argv[0]);
    set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_test_fsync"));
    progname = get_progname(argv[0]);
 
    handle_args(argc, argv);
 
    /* Prevent leaving behind the test file */
    pqsignal(SIGINT, signal_cleanup);
    pqsignal(SIGTERM, signal_cleanup);
#ifndef WIN32
    pqsignal(SIGALRM, process_alarm);
#endif
#ifdef SIGHUP
    /* Not defined on win32 */
    pqsignal(SIGHUP, signal_cleanup);
#endif
 
    pg_prng_seed(&pg_global_prng_state, (uint64) time(NULL));
 
    prepare_buf();
 
    test_open();
 
    /* Test using 1 XLOG_BLCKSZ write */
    test_sync(1);
 
    /* Test using 2 XLOG_BLCKSZ writes */
    test_sync(2);
 
    test_open_syncs();
 
    test_file_descriptor_sync();
 
    test_non_sync();
 
    unlink(filename);
 
    return 0;
}

References filename, get_progname(), handle_args(), pg_global_prng_state, pg_logging_init(), pg_prng_seed(), PG_TEXTDOMAIN, pqsignal(), prepare_buf(), process_alarm(), progname, set_pglocale_pgservice(), SIGALRM, SIGHUP, signal_cleanup(), test_file_descriptor_sync(), test_non_sync(), test_open(), test_open_syncs(), and test_sync().

open_direct()

static int open_direct ( const char *  path, int  flags, mode_t  mode  )

static

Definition at line 259 of file pg_test_fsync.c.

{
    int         fd;
 
#ifdef O_DIRECT
    flags |= O_DIRECT;
#endif
 
    fd = open(path, flags, mode);
 
#if !defined(O_DIRECT) && defined(F_NOCACHE)
    if (fd >= 0 && fcntl(fd, F_NOCACHE, 1) < 0)
    {
        int         save_errno = errno;
 
        close(fd);
        errno = save_errno;
        return -1;
    }
#endif
 
    return fd;
}

References close, fd(), and mode.

Referenced by test_open_sync(), and test_sync().

prepare_buf()

static void prepare_buf ( void  )

static

Definition at line 225 of file pg_test_fsync.c.

{
    int         ops;
 
    /* write random data into buffer */
    for (ops = 0; ops < DEFAULT_XLOG_SEG_SIZE; ops++)
        full_buf[ops] = (char) pg_prng_int32(&pg_global_prng_state);
 
    buf = (char *) TYPEALIGN(XLOG_BLCKSZ, full_buf);
}

References buf, DEFAULT_XLOG_SEG_SIZE, full_buf, pg_global_prng_state, pg_prng_int32(), and TYPEALIGN.

Referenced by main().

print_elapse()

static void print_elapse ( struct timeval  start_t, struct timeval  stop_t, int  ops  )

static

Definition at line 623 of file pg_test_fsync.c.

{
    double      total_time = (stop_t.tv_sec - start_t.tv_sec) +
    (stop_t.tv_usec - start_t.tv_usec) * 0.000001;
    double      per_second = ops / total_time;
    double      avg_op_time_us = (total_time / ops) * USECS_SEC;
 
    printf(_(OPS_FORMAT), per_second, avg_op_time_us);
}

References _, OPS_FORMAT, printf, stop_t, and USECS_SEC.

process_alarm()

static void process_alarm ( SIGNAL_ARGS  )

static

Definition at line 635 of file pg_test_fsync.c.

{
    alarm_triggered = true;
}

References alarm_triggered.

Referenced by main().

signal_cleanup()

static void signal_cleanup ( SIGNAL_ARGS  )

static

Definition at line 593 of file pg_test_fsync.c.

{
    /* Delete the file if it exists. Ignore errors */
    if (needs_unlink)
        unlink(filename);
    /* Finish incomplete line on stdout */
    puts("");
    exit(1);
}

References exit(), filename, and needs_unlink.

Referenced by main().

test_file_descriptor_sync()

static void test_file_descriptor_sync ( void  )

static

Definition at line 499 of file pg_test_fsync.c.

{
    int         tmpfile,
                ops;
 
    /*
     * Test whether fsync can sync data written on a different descriptor for
     * the same file.  This checks the efficiency of multi-process fsyncs
     * against the same file. Possibly this should be done with writethrough
     * on platforms which support it.
     */
    printf(_("\nTest if fsync on non-write file descriptor is honored:\n"));
    printf(_("(If the times are similar, fsync() can sync data written on a different\n"
             "descriptor.)\n"));
 
    /*
     * first write, fsync and close, which is the normal behavior without
     * multiple descriptors
     */
    printf(LABEL_FORMAT, "write, fsync, close");
    fflush(stdout);
 
    START_TIMER;
    for (ops = 0; alarm_triggered == false; ops++)
    {
        if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
            die("could not open output file");
        if (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
            die("write failed");
        if (fsync(tmpfile) != 0)
            die("fsync failed");
        close(tmpfile);
 
        /*
         * open and close the file again to be consistent with the following
         * test
         */
        if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
            die("could not open output file");
        close(tmpfile);
    }
    STOP_TIMER;
 
    /*
     * Now open, write, close, open again and fsync This simulates processes
     * fsyncing each other's writes.
     */
    printf(LABEL_FORMAT, "write, close, fsync");
    fflush(stdout);
 
    START_TIMER;
    for (ops = 0; alarm_triggered == false; ops++)
    {
        if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
            die("could not open output file");
        if (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
            die("write failed");
        close(tmpfile);
        /* reopen file */
        if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
            die("could not open output file");
        if (fsync(tmpfile) != 0)
            die("fsync failed");
        close(tmpfile);
    }
    STOP_TIMER;
}

References _, alarm_triggered, buf, close, die, fflush(), filename, fsync, LABEL_FORMAT, PG_BINARY, printf, START_TIMER, generate_unaccent_rules::stdout, STOP_TIMER, and write.

Referenced by main().

test_non_sync()

static void test_non_sync ( void  )

static

Definition at line 568 of file pg_test_fsync.c.

{
    int         tmpfile,
                ops;
 
    /*
     * Test a simple write without fsync
     */
    printf(_("\nNon-sync'ed %dkB writes:\n"), XLOG_BLCKSZ_K);
    printf(LABEL_FORMAT, "write");
    fflush(stdout);
 
    if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
        die("could not open output file");
    START_TIMER;
    for (ops = 0; alarm_triggered == false; ops++)
    {
        if (pg_pwrite(tmpfile, buf, XLOG_BLCKSZ, 0) != XLOG_BLCKSZ)
            die("write failed");
    }
    STOP_TIMER;
    close(tmpfile);
}

References _, alarm_triggered, buf, close, die, fflush(), filename, LABEL_FORMAT, PG_BINARY, pg_pwrite, printf, START_TIMER, generate_unaccent_rules::stdout, STOP_TIMER, and XLOG_BLCKSZ_K.

Referenced by main().

test_open()

static void test_open ( void  )

static

Definition at line 237 of file pg_test_fsync.c.

{
    int         tmpfile;
 
    /*
     * test if we can open the target file
     */
    if ((tmpfile = open(filename, O_RDWR | O_CREAT | PG_BINARY, S_IRUSR | S_IWUSR)) == -1)
        die("could not open output file");
    needs_unlink = 1;
    if (write(tmpfile, full_buf, DEFAULT_XLOG_SEG_SIZE) !=
        DEFAULT_XLOG_SEG_SIZE)
        die("write failed");
 
    /* fsync now so that dirty buffers don't skew later tests */
    if (fsync(tmpfile) != 0)
        die("fsync failed");
 
    close(tmpfile);
}

References close, DEFAULT_XLOG_SEG_SIZE, die, filename, fsync, full_buf, needs_unlink, PG_BINARY, S_IRUSR, S_IWUSR, and write.

Referenced by main().

test_open_sync()

static void test_open_sync ( const char *  msg, int  writes_size  )

static

Definition at line 463 of file pg_test_fsync.c.

{
#ifdef O_SYNC
    int         tmpfile,
                ops,
                writes;
#endif
 
    printf(LABEL_FORMAT, msg);
    fflush(stdout);
 
#ifdef O_SYNC
    if ((tmpfile = open_direct(filename, O_RDWR | O_SYNC | PG_BINARY, 0)) == -1)
        printf(NA_FORMAT, _("n/a*"));
    else
    {
        START_TIMER;
        for (ops = 0; alarm_triggered == false; ops++)
        {
            for (writes = 0; writes < 16 / writes_size; writes++)
                if (pg_pwrite(tmpfile,
                              buf,
                              writes_size * 1024,
                              writes * writes_size * 1024) !=
                    writes_size * 1024)
                    die("write failed");
        }
        STOP_TIMER;
        close(tmpfile);
    }
#else
    printf(NA_FORMAT, _("n/a"));
#endif
}

References _, alarm_triggered, buf, close, die, fflush(), filename, LABEL_FORMAT, NA_FORMAT, open_direct(), PG_BINARY, pg_pwrite, printf, START_TIMER, generate_unaccent_rules::stdout, and STOP_TIMER.

Referenced by test_open_syncs().

test_open_syncs()

static void test_open_syncs ( void  )

static

Definition at line 446 of file pg_test_fsync.c.

{
    printf(_("\nCompare open_sync with different write sizes:\n"));
    printf(_("(This is designed to compare the cost of writing 16kB in different write\n"
             "open_sync sizes.)\n"));
 
    test_open_sync(_(" 1 * 16kB open_sync write"), 16);
    test_open_sync(_(" 2 *  8kB open_sync writes"), 8);
    test_open_sync(_(" 4 *  4kB open_sync writes"), 4);
    test_open_sync(_(" 8 *  2kB open_sync writes"), 2);
    test_open_sync(_("16 *  1kB open_sync writes"), 1);
}

References _, printf, and test_open_sync().

Referenced by main().

test_sync()

static void test_sync ( int  writes_per_op )

static

Definition at line 284 of file pg_test_fsync.c.

{
    int         tmpfile,
                ops,
                writes;
    bool        fs_warning = false;
 
    if (writes_per_op == 1)
        printf(_("\nCompare file sync methods using one %dkB write:\n"), XLOG_BLCKSZ_K);
    else
        printf(_("\nCompare file sync methods using two %dkB writes:\n"), XLOG_BLCKSZ_K);
    printf(_("(in wal_sync_method preference order, except fdatasync is Linux's default)\n"));
 
    /*
     * Test open_datasync if available
     */
    printf(LABEL_FORMAT, "open_datasync");
    fflush(stdout);
 
#ifdef O_DSYNC
    if ((tmpfile = open_direct(filename, O_RDWR | O_DSYNC | PG_BINARY, 0)) == -1)
    {
        printf(NA_FORMAT, _("n/a*"));
        fs_warning = true;
    }
    else
    {
        START_TIMER;
        for (ops = 0; alarm_triggered == false; ops++)
        {
            for (writes = 0; writes < writes_per_op; writes++)
                if (pg_pwrite(tmpfile,
                              buf,
                              XLOG_BLCKSZ,
                              writes * XLOG_BLCKSZ) != XLOG_BLCKSZ)
                    die("write failed");
        }
        STOP_TIMER;
        close(tmpfile);
    }
#else
    printf(NA_FORMAT, _("n/a"));
#endif
 
/*
 * Test fdatasync if available
 */
    printf(LABEL_FORMAT, "fdatasync");
    fflush(stdout);
 
    if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
        die("could not open output file");
    START_TIMER;
    for (ops = 0; alarm_triggered == false; ops++)
    {
        for (writes = 0; writes < writes_per_op; writes++)
            if (pg_pwrite(tmpfile,
                          buf,
                          XLOG_BLCKSZ,
                          writes * XLOG_BLCKSZ) != XLOG_BLCKSZ)
                die("write failed");
        fdatasync(tmpfile);
    }
    STOP_TIMER;
    close(tmpfile);
 
/*
 * Test fsync
 */
    printf(LABEL_FORMAT, "fsync");
    fflush(stdout);
 
    if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
        die("could not open output file");
    START_TIMER;
    for (ops = 0; alarm_triggered == false; ops++)
    {
        for (writes = 0; writes < writes_per_op; writes++)
            if (pg_pwrite(tmpfile,
                          buf,
                          XLOG_BLCKSZ,
                          writes * XLOG_BLCKSZ) != XLOG_BLCKSZ)
                die("write failed");
        if (fsync(tmpfile) != 0)
            die("fsync failed");
    }
    STOP_TIMER;
    close(tmpfile);
 
/*
 * If fsync_writethrough is available, test as well
 */
    printf(LABEL_FORMAT, "fsync_writethrough");
    fflush(stdout);
 
#ifdef HAVE_FSYNC_WRITETHROUGH
    if ((tmpfile = open(filename, O_RDWR | PG_BINARY, 0)) == -1)
        die("could not open output file");
    START_TIMER;
    for (ops = 0; alarm_triggered == false; ops++)
    {
        for (writes = 0; writes < writes_per_op; writes++)
            if (pg_pwrite(tmpfile,
                          buf,
                          XLOG_BLCKSZ,
                          writes * XLOG_BLCKSZ) != XLOG_BLCKSZ)
                die("write failed");
        if (pg_fsync_writethrough(tmpfile) != 0)
            die("fsync failed");
    }
    STOP_TIMER;
    close(tmpfile);
#else
    printf(NA_FORMAT, _("n/a"));
#endif
 
/*
 * Test open_sync if available
 */
    printf(LABEL_FORMAT, "open_sync");
    fflush(stdout);
 
#ifdef O_SYNC
    if ((tmpfile = open_direct(filename, O_RDWR | O_SYNC | PG_BINARY, 0)) == -1)
    {
        printf(NA_FORMAT, _("n/a*"));
        fs_warning = true;
    }
    else
    {
        START_TIMER;
        for (ops = 0; alarm_triggered == false; ops++)
        {
            for (writes = 0; writes < writes_per_op; writes++)
                if (pg_pwrite(tmpfile,
                              buf,
                              XLOG_BLCKSZ,
                              writes * XLOG_BLCKSZ) != XLOG_BLCKSZ)
 
                    /*
                     * This can generate write failures if the filesystem has
                     * a large block size, e.g. 4k, and there is no support
                     * for O_DIRECT writes smaller than the file system block
                     * size, e.g. XFS.
                     */
                    die("write failed");
        }
        STOP_TIMER;
        close(tmpfile);
    }
#else
    printf(NA_FORMAT, _("n/a"));
#endif
 
    if (fs_warning)
    {
        printf(_("* This file system and its mount options do not support direct\n"
                 "  I/O, e.g. ext4 in journaled mode.\n"));
    }
}

References _, alarm_triggered, buf, close, die, fdatasync(), fflush(), filename, fsync, LABEL_FORMAT, NA_FORMAT, O_DSYNC, open_direct(), PG_BINARY, pg_fsync_writethrough(), pg_pwrite, printf, START_TIMER, generate_unaccent_rules::stdout, STOP_TIMER, and XLOG_BLCKSZ_K.

Referenced by main().

Variable Documentation

alarm_triggered

sig_atomic_t alarm_triggered = false

static

Definition at line 71 of file pg_test_fsync.c.

Referenced by process_alarm(), test_file_descriptor_sync(), test_non_sync(), test_open_sync(), and test_sync().

buf

char * buf

static

Definition at line 67 of file pg_test_fsync.c.

Referenced by _bt_binsrch(), _bt_bottomupdel_pass(), _bt_checkpage(), _bt_clear_incomplete_split(), _bt_conditionallockbuf(), _bt_dedup_pass(), _bt_delitems_delete(), _bt_delitems_delete_check(), _bt_delitems_vacuum(), _bt_endpoint(), _bt_first(), _bt_get_endpoint(), _bt_getbuf(), _bt_getstackbuf(), _bt_insert_parent(), _bt_insertonpg(), _bt_killitems(), _bt_leftsib_splitflag(), _bt_lockbuf(), _bt_moveright(), _bt_relandgetbuf(), _bt_relbuf(), _bt_rightsib_halfdeadflag(), _bt_split(), _bt_unlink_halfdead_page(), _bt_unlockbuf(), _bt_upgradelockbufcleanup(), _bt_walk_left(), _conv(), _CustomReadFunc(), _CustomWriteFunc(), _discoverArchiveFormat(), _EndLO(), _getObjectDescription(), _hash_addovflpage(), _hash_checkpage(), _hash_doinsert(), _hash_dropbuf(), _hash_first(), _hash_getbucketbuf_from_hashkey(), _hash_getbuf(), _hash_getbuf_with_condlock_cleanup(), _hash_getbuf_with_strategy(), _hash_getinitbuf(), _hash_getnewbuf(), _hash_init(), _hash_init_metabuffer(), _hash_initbitmapbuffer(), _hash_initbuf(), _hash_kill_items(), _hash_next(), _hash_pgaddmultitup(), _hash_pgaddtup(), _hash_readpage(), _hash_relbuf(), _hash_vacuum_one_page(), _LoadLOs(), _PG_init(), _PrintFileData(), _ReadBuf(), _scriptOut(), _skipData(), _tarAddFile(), _tarReadRaw(), _WriteBuf(), _WriteLOData(), abbroffset(), AbortBufferIO(), add_cast_to(), add_role_attribute(), add_tablespace_footer(), AddBufferToRing(), AddFileToBackupManifest(), addFooterToPublicationDesc(), alignStringInfoInt(), AlterSequence(), append_database_pattern(), append_db_pattern_cte(), append_rel_pattern_filtered_cte(), append_rel_pattern_raw_cte(), append_with_tabs(), appendAggOrderBy(), appendArrayEscapedString(), appendByteaLiteral(), appendConditions(), appendConnStrVal(), appendContextKeyword(), appendCSVLiteral(), appendFunctionName(), appendGroupByClause(), AppendIntegerCommandOption(), appendJSONKeyValue(), appendJSONKeyValueFmt(), appendLimitClause(), appendOrderByClause(), appendOrderBySuffix(), AppendPlainCommandOption(), appendPsqlMetaConnect(), appendQualifiedRelation(), appendShellString(), appendShellStringNoError(), AppendStringCommandOption(), appendStringLiteral(), appendStringLiteralConn(), appendStringLiteralDQ(), array_agg_array_deserialize(), array_agg_array_serialize(), array_agg_deserialize(), array_agg_serialize(), array_dims(), array_recv(), array_send(), array_to_text_internal(), asyncQueueReadAllNotifications(), autoprewarm_database_main(), BaseBackup(), basebackup_read_file(), bbsink_copystream_archive_contents(), bbsink_copystream_begin_archive(), bbsink_copystream_begin_backup(), bbsink_copystream_begin_manifest(), bbsink_copystream_end_archive(), be_lo_export(), bind_param_error_callback(), bit_recv(), boolrecv(), boolsend(), bootstrap_template1(), box_recv(), box_send(), bpcharrecv(), bqarr_in(), brin_desc(), brin_evacuate_page(), brin_getinsertbuffer(), brin_minmax_multi_summary_out(), brin_page_cleanup(), brin_start_evacuating_page(), brin_vacuum_scan(), brin_xlog_createidx(), brin_xlog_revmap_extend(), bringetbitmap(), brinGetTupleForHeapBlock(), brininsert(), brinSetHeapBlockItemptr(), brinsummarize(), btree_desc(), btree_xlog_dedup(), btree_xlog_split(), btvacuumpage(), buf_add_txid(), buf_finalize(), buf_init(), BufferAlloc(), build_client_final_message(), build_client_first_message(), build_regexp_match_result(), build_regexp_split_result(), build_test_info_result(), build_test_match_result(), BuildIndexValueDescription(), BuildParamLogString(), buildWorkerCommand(), buildWorkerResponse(), bytearecv(), bzero2(), cache_locale_time(), calc_s2k_iter_salted(), calc_s2k_salted(), calc_s2k_simple(), cash_out(), cash_recv(), cash_send(), cash_words(), cfgets(), charrecv(), charsend(), check_default_text_search_config(), check_key_cksum(), check_ssl_key_file_permissions(), check_strxfrm_bug(), CheckPointTwoPhase(), CheckSASLAuth(), ChooseExtendedStatisticNameAddition(), ChooseForeignKeyConstraintNameAddition(), ChooseIndexColumnNames(), ChooseIndexNameAddition(), cidr_recv(), cidrecv(), cidsend(), circle_recv(), circle_send(), clog_desc(), cluster_conn_opts(), commit_ts_desc(), compile_pltcl_function(), complex_recv(), complex_send(), ConditionalLockBuffer(), conninfo_parse(), conninfo_uri_decode(), conninfo_uri_parse_options(), constructConnStr(), convert(), convert64(), convertJsonbScalar(), copy_read_data(), CopyGetInt16(), CopyGetInt32(), CopySendInt16(), CopySendInt32(), count_lines_in_buf(), count_nondeletable_pages(), crc32_sz(), create_cursor(), create_database(), create_role(), create_sql_command(), createBackupLabel(), CreateDirAndVersionFile(), cstring_recv(), cstring_send(), cube_out(), cube_recv(), cube_send(), dataBeginPlaceToPage(), dataBeginPlaceToPageInternal(), dataBeginPlaceToPageLeaf(), dataExecPlaceToPage(), dataExecPlaceToPageInternal(), dataExecPlaceToPageLeaf(), dataPlaceToPageLeafRecompress(), date_out(), date_recv(), date_send(), date_test_fmt(), datum_to_json(), dbase_desc(), dblink_close(), dblink_fetch(), dblink_open(), DecodeAbort(), DecodeCommit(), DecodeDelete(), DecodeInsert(), DecodeMultiInsert(), DecodePrepare(), DecodeSpecConfirm(), DecodeTruncate(), DecodeTXNNeedSkip(), DecodeUpdate(), decompile_column_index_array(), decrypt_read(), default_desc(), DeleteAllExportedSnapshotFiles(), deparse_expression_pretty(), deparse_lquery(), deparse_ltree(), deparseAggref(), deparseAnalyzeInfoSql(), deparseAnalyzeSizeSql(), deparseAnalyzeSql(), deparseArrayExpr(), deparseBoolExpr(), deparseCaseExpr(), deparseColumnRef(), deparseConst(), deparseDeleteSql(), deparseDirectDeleteSql(), deparseDirectUpdateSql(), deparseDistinctExpr(), deparseExplicitTargetList(), deparseFromExpr(), deparseFromExprForRel(), deparseFuncExpr(), deparseInsertSql(), deparseLockingClause(), deparseNullTest(), deparseOperatorName(), deparseOpExpr(), deparseRangeTblRef(), deparseRelation(), deparseReturningList(), deparseScalarArrayOpExpr(), deparseSelectSql(), deparseSelectStmtForRel(), deparseSortGroupClause(), deparseStringLiteral(), deparseSubqueryTargetList(), deparseSubscriptingRef(), deparseTargetList(), deparseTruncateSql(), deparseUpdateSql(), desc_recompress_leaf(), describeAccessMethods(), describeAggregates(), describeConfigurationParameters(), describeDumpableObject(), describeFunctions(), DescribeLockTag(), describeOneTableDetails(), describeOneTSConfig(), describeOneTSParser(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTableDetails(), describeTablespaces(), describeTypes(), dir_write(), DispatchJobForTocEntry(), do_analyze_rel(), do_compile(), do_setval(), domain_recv(), drain(), drop_database_if_exists(), drop_role_if_exists(), dropRoles(), dsm_cleanup_for_mmap(), dummy_ssl_passwd_cb(), dump_binary(), dump_lo_buf(), dumpDatabaseConfig(), dumpLOs(), dumpRoleGUCPrivs(), dumpRoleMembership(), dumpRoles(), dumpTablespaces(), dumpTimestamp(), dumpUserConfig(), ean13_out(), ean2isn(), entryBeginPlaceToPage(), entryExecPlaceToPage(), entryIsEnoughSpace(), enum_recv(), enum_send(), err_sendstring(), escape_json(), escape_param_str(), escape_xml(), escape_yaml(), ExceptionalCondition(), exec_command_password(), exec_command_sf_sv(), ExecBuildSlotPartitionKeyDescription(), ExecBuildSlotValueDescription(), ExecEvalXmlExpr(), ExecQueryUsingCursor(), executeMetaCommand(), ExecuteSimpleCommands(), ExecuteSqlCommandBuf(), ExplainPropertyFloat(), ExplainPropertyInteger(), ExplainPropertyUInteger(), explicit_bzero(), exportFile(), ExportSnapshot(), fe_recvint64(), fe_sendint64(), fill_seq_fork_with_data(), find_provider(), FindStreamingStart(), FinishPreparedTransaction(), flatten_reloptions(), flatten_set_variable_args(), flattenJsonPathParseItem(), float4_numeric(), float4recv(), float4send(), float8_numeric(), float8recv(), float8send(), flush_pipe_input(), FlushBuffer(), fmtlong(), format_aggregate_signature(), format_operator_extended(), format_procedure_extended(), format_type_extended(), formatPGVersionNumber(), FreePageManagerDump(), FreePageManagerDumpBtree(), FreePageManagerDumpSpans(), FreeSpaceMapPrepareTruncateRel(), fsm_readbuf(), fsm_search(), fsm_search_avail(), fsm_set_and_search(), fsm_vacuum_page(), generate_opclass_name(), generate_operator_clause(), generate_operator_name(), generate_trgm_only(), generate_wildcard_trgm(), generic_desc(), get_agg_expr(), get_basic_select_query(), get_coercion_expr(), get_collation_actual_version(), get_column_alias_list(), get_connect_string(), get_const_collation(), get_const_expr(), get_create_object_cmd(), get_delete_query_def(), get_from_clause(), get_from_clause_coldeflist(), get_from_clause_item(), get_func_expr(), get_func_sql_syntax(), get_func_sql_syntax_time(), get_insert_query_def(), get_modifiers(), get_opclass_name(), get_oper_expr(), get_parallel_object_list(), get_prompt(), get_query_def(), get_range_partbound_string(), get_raw_page_internal(), get_reloptions(), get_rule_expr(), get_rule_expr_funccall(), get_rule_groupingset(), get_rule_orderby(), get_rule_sortgroupclause(), get_rule_windowclause(), get_rule_windowspec(), get_select_query_def(), get_setop_query(), get_special_variable(), get_sql_delete(), get_sql_insert(), get_sql_update(), get_sublink_expr(), get_tablefunc(), get_tablesample_def(), get_target_list(), get_tuple_of_interest(), get_update_query_def(), get_update_query_targetlist_def(), get_utility_query_def(), get_values_def(), get_variable(), get_wildcard_part(), get_windowfunc_expr(), get_with_clause(), GetBufferFromRing(), GetHugePageSize(), GetRecordedFreeSpace(), GetWALFPIInfo(), gin_desc(), ginCompressPostingList(), gist_desc(), gistcheckpage(), gistfixsplit(), gistformdownlink(), gnuish_strerror_r(), handleCopyIn(), handleCopyOut(), hash_desc(), hash_xlog_split_page(), hashbpchar(), hashbpcharextended(), hashbucketcleanup(), hashbulkdelete(), hashtext(), hashtextextended(), heap2_decode(), heap2_desc(), heap_decode(), heap_desc(), heap_force_common(), heap_index_delete_tuples(), heap_lock_updated_tuple_rec(), heap_page_is_all_visible(), heap_vacuum_rel(), heapam_relation_copy_for_cluster(), helpVariables(), hladdword(), hlfinditem(), hlparsetext(), hmac_finish(), hstore_recv(), hstore_send(), hstorePairs(), ignore_boolean_expression(), importFile(), indent_lines(), inet_recv(), infile(), InitBufferPool(), initialize_SSL(), initialize_worker_spi(), InitializeShmemGUCs(), InitLocalBuffers(), int2recv(), int2send(), int2vectorrecv(), int4recv(), int4send(), int8_avg_deserialize(), int8_avg_serialize(), int8out(), int8recv(), int8send(), interval_out(), interval_recv(), interval_send(), inv_read(), inv_write(), InvalidateBuffer(), is_true_boolean_expression(), isn_out(), json_recv(), json_send(), jsonb_agg_transfn(), jsonb_object_agg_transfn(), jsonb_recv(), jsonb_send(), JsonEncodeDateTime(), jsonpath_recv(), jsonpath_send(), jsonPathFromCstring(), jsonPathToCstring(), KnownAssignedXidsDisplay(), lazy_scan_heap(), lazy_scan_new_or_empty(), lazy_scan_noprune(), lazy_scan_prune(), lazy_vacuum_heap_rel(), libpqrcv_get_conninfo(), line_recv(), line_send(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDefaultACLs(), listDomains(), listEventTriggers(), listExtendedStats(), listExtensionContents(), listExtensions(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listLargeObjects(), listOneExtensionContents(), listOperatorClasses(), listOperatorFamilies(), listOpFamilyFunctions(), listOpFamilyOperators(), listPartitionedTables(), listPublications(), listSchemas(), listTables(), listTSConfigs(), listTSConfigsVerbose(), listTSDictionaries(), listTSParsers(), listTSParsersVerbose(), listTSTemplates(), listUserMappings(), llvm_create_types(), lo_export(), lo_import_internal(), lo_read(), lo_write(), load_module(), load_resultmap(), local_queue_fetch_file(), local_queue_fetch_range(), locale_date_order(), LockBuffer(), log_line_prefix(), log_newpage_range(), log_split_page(), log_status_format(), LogicalDecodingProcessRecord(), logicalmsg_decode(), logicalmsg_desc(), LogicalRepApplyLoop(), LogRecoveryConflict(), LookupGXact(), lquery_in(), lquery_recv(), lquery_send(), lseg_recv(), lseg_send(), ltree_crc32_sz(), ltree_in(), ltree_recv(), ltree_send(), ltxtq_recv(), ltxtq_send(), macaddr8_recv(), macaddr8_send(), macaddr_recv(), macaddr_send(), main(), make_absolute_path(), make_ruledef(), make_viewdef(), makeAlterConfigCommand(), makeMultirangeTypeName(), map_sql_identifier_to_xml_name(), map_sql_value_to_xml_value(), map_xml_name_to_sql_identifier(), mbuf_append(), multirange_out(), multirange_recv(), multirange_send(), multixact_desc(), mxid_to_string(), my_sock_read(), my_sock_write(), namerecv(), namesend(), network_recv(), network_send(), next_field_expand(), next_token(), nextval_internal(), NotifyMyFrontEnd(), num_word(), numeric_abbrev_convert(), numeric_avg_deserialize(), numeric_avg_serialize(), numeric_deserialize(), numeric_poly_deserialize(), numeric_poly_serialize(), numeric_recv(), numeric_send(), numeric_serialize(), numericvar_deserialize(), numericvar_serialize(), objectDescription(), OidReceiveFunctionCall(), oidrecv(), oidsend(), oidvectorrecv(), out_gistxlogDelete(), out_gistxlogPageDelete(), out_gistxlogPageReuse(), out_gistxlogPageSplit(), out_infobits(), out_member(), outDouble(), overwrite(), pad_eme_pkcs1_v15(), parse_literal_data(), parse_lquery(), parse_ltree(), parse_snapshot(), parse_tsquery(), parseAclItem(), parseServiceFile(), parsetext(), passwordFromFile(), path_recv(), path_send(), patternToSQLRegex(), PerformWalRecovery(), permissionsList(), pg_armor(), pg_b64_decode(), pg_b64_encode(), pg_base64_decode(), pg_base64_encode(), pg_dearmor(), pg_gen_salt(), pg_gen_salt_rounds(), pg_get_constraintdef_worker(), pg_get_function_arguments(), pg_get_function_identity_arguments(), pg_get_function_result(), pg_get_function_sqlbody(), pg_get_functiondef(), pg_get_indexdef_worker(), pg_get_line(), pg_get_line_append(), pg_get_line_buf(), pg_get_partkeydef_worker(), pg_get_querydef(), pg_get_ruledef_worker(), pg_get_statisticsobj_worker(), pg_get_triggerdef_worker(), pg_get_viewdef_worker(), pg_local_sendauth(), pg_log_generic_v(), pg_lsn_mi(), pg_lsn_mii(), pg_lsn_out(), pg_lsn_pli(), pg_lsn_recv(), pg_lsn_send(), pg_md5_encrypt(), pg_popcount(), pg_pread(), pg_prewarm(), pg_pwrite(), pg_saslprep(), pg_sequence_last_value(), pg_size_pretty(), pg_snapshot_recv(), pg_snapshot_send(), pg_split_walfile_name(), pg_stat_get_wal(), pg_stat_statements_internal(), pg_strerror_r(), pg_strong_random(), pgp_armor_decode(), pgp_encrypt(), pgp_extract_armor_headers(), pgp_key_id_w(), pgp_mpi_hash(), pgp_mpi_write(), pgrowlocks(), pgstat_btree_page(), pgstat_gist_page(), pgstat_hash_page(), pgstathashindex(), PGTYPESdate_to_asc(), PGTYPESinterval_to_asc(), PGTYPESnumeric_div(), PGTYPEStimestamp_to_asc(), pgwin32_recv(), pgwin32_select(), pgwin32_send(), pgwin32_waitforsinglesocket(), pgxmlNodeSetToText(), pickout(), PinBuffer(), PinBuffer_Locked(), plpgsql_append_source_text(), PLy_exception_set(), PLy_exception_set_plural(), point_recv(), point_send(), poly_recv(), poly_send(), populate_scalar(), postgresImportForeignSchema(), PostgresMain(), pq_beginmessage(), pq_beginmessage_reuse(), pq_begintypsend(), pq_copymsgbytes(), pq_endmessage(), pq_endmessage_reuse(), pq_endtypsend(), pq_send_ascii_string(), pq_sendbyte(), pq_sendbytes(), pq_sendcountedtext(), pq_sendfloat4(), pq_sendfloat8(), pq_sendint(), pq_sendint16(), pq_sendint32(), pq_sendint64(), pq_sendint8(), pq_sendstring(), pq_sendtext(), pq_writeint16(), pq_writeint32(), pq_writeint64(), pq_writeint8(), pq_writestring(), PQcancel(), PQdefaultSSLKeyPassHook_OpenSSL(), pqGetHomeDirectory(), pqGetNegotiateProtocolVersion3(), pqGets(), pqGets_append(), pqGets_internal(), PQoidStatus(), pqPacketSend(), pqPutMsgBytes(), PQssl_passwd_cb(), prepare_buf(), PrepareRedoAdd(), PrescanPreparedTransactions(), print_function_arguments(), print_function_rettype(), print_function_sqlbody(), print_function_trftypes(), print_wchar_str(), printACLColumn(), PrintBufferLeakWarning(), printJsonPathItem(), PrintQueryStatus(), printRemoteParam(), printRemotePlaceholder(), printsimple(), printsimple_startup(), printSubscripts(), printtup(), printVerboseErrorMessages(), process_file(), process_pgfdw_appname(), process_pipe_input(), processIndirection(), processSQLNamePattern(), ProcessStartupPacket(), ProcessTwoPhaseBuffer(), ProcSleep(), psql_add_command(), psql_end_command(), psql_get_variable(), psql_start_command(), puttzcode(), puttzcodepass(), pvsnprintf(), pwdfMatchesString(), px_debug(), px_find_combo(), px_gen_salt(), qtext_load_file(), queryin(), quote_qualified_identifier(), range_bound_escape(), range_deparse(), range_parse_bound(), range_recv(), range_send(), read_binary_file(), read_file_contents(), read_seq_tuple(), read_text_file(), read_whole_file(), ReadArrayBinary(), ReadBufferExtended(), ReadDataFromArchiveNone(), ReadStr(), ReadTwoPhaseFile(), ReadyForQuery(), rebuildInsertSql(), ReceiveBackupManifestInMemory(), ReceiveBackupManifestInMemoryChunk(), ReceiveCopyBegin(), ReceiveFunctionCall(), ReceiveTarFile(), record_in(), record_out(), record_recv(), record_send(), RecoverPreparedTransactions(), recv_password_packet(), regression_main(), RelationCopyStorage(), RelationCopyStorageUsingBuffer(), relmap_desc(), repairDependencyLoop(), replace_text_regexp(), replorigin_desc(), report_invalid_encoding(), report_untranslatable_char(), reserveSpaceForItemPointer(), ResetSequence(), resolve_symlinks(), restore(), restoreTwoPhaseData(), revmap_physical_extend(), ri_GenerateQual(), ri_GenerateQualCollation(), rm_redo_error_callback(), rot13_passphrase(), run_crypt_des(), run_crypt_md5(), run_ssl_passphrase_command(), sanitize_char(), sanitize_str(), scan_file(), ScanSourceDatabasePgClass(), ScanSourceDatabasePgClassPage(), scram_get_mechanisms(), search_directory(), send_message_to_frontend(), send_message_to_server_log(), sendAuthRequest(), SendCopyBegin(), SendCopyOutResponse(), SendFunctionResult(), SendNegotiateProtocolVersion(), SendQuery(), SendRowDescriptionMessage(), SendTimeLineHistory(), sepgsql_audit_log(), seq_desc(), SequenceChangePersistence(), serialize_deflist(), set_backtrace(), setFilePath(), show_data_directory_mode(), show_log_file_mode(), show_sortorder_options(), show_unix_socket_permissions(), ShowTransactionStateRec(), simple_quote_literal(), slashUsage(), smgr_desc(), spg_desc(), SPI_result_code_string(), SplitToVariants(), ssl_extension_info(), ssl_external_passwd_cb(), SSLerrfree(), standby_decode(), standby_desc(), standby_desc_invalidations(), standby_desc_running_xacts(), StandbyRecoverPreparedTransactions(), StandbyTransactionIdIsPrepared(), StartBufferIO(), StartLogicalReplication(), StartReplication(), statapprox_heap(), stop_postmaster(), str_time(), StrategyFreeBuffer(), StrategyGetBuffer(), StrategyRejectBuffer(), string2ean(), string_agg_deserialize(), string_agg_serialize(), stringinfo_to_xmltype(), syntax_error(), tar_write(), tarRead(), tarWrite(), tblspc_desc(), TerminateBufferIO(), test_file_descriptor_sync(), test_non_sync(), test_open_sync(), test_sync(), testcustomrmgrs_desc(), text_format_append_string(), text_format_string_conversion(), textrecv(), textsend(), tidout(), tidrecv(), tidsend(), time_out(), time_recv(), time_send(), timeofday(), timestamp_out(), timestamp_recv(), timestamp_send(), timestamptz_out(), timestamptz_recv(), timestamptz_send(), timestamptz_to_str(), timetz_out(), timetz_recv(), timetz_send(), to_hex32(), to_hex64(), tokenize_auth_file(), try_complete_step(), ts_stat_sql(), tsquery_rewrite_query(), tsqueryrecv(), tsquerysend(), tsvectorin(), tsvectorrecv(), tsvectorsend(), tuplesort_readtup_alloc(), unaccent_lexize(), unicode_normalize_func(), uniqueentry(), unknownrecv(), unknownsend(), UnlockBuffers(), unpack_sql_state(), UnpinBuffer(), usage(), uuid_generate_v1mc(), uuid_out(), vacuum_one_database(), vacuumlo(), validate_exec(), validateSQLNamePattern(), varbit_recv(), varbit_send(), varcharrecv(), verifyBackupPageConsistency(), vm_readbuf(), void_send(), WaitBufHdrUnlocked(), WaitForCommands(), WaitIO(), WALRead(), WalReceiverMain(), WordEntryCMP(), write_auto_conf_file(), write_csvlog(), write_jsonlog(), write_target_range(), xact_decode(), xact_desc(), xact_desc_abort(), xact_desc_assignment(), xact_desc_commit(), xact_desc_prepare(), xact_desc_relations(), xact_desc_stats(), xact_desc_subxacts(), xid8recv(), xid8send(), xidrecv(), xidsend(), xlog_block_info(), xlog_decode(), xlog_desc(), xlog_outdesc(), XLogInitBufferForRedo(), XLogInsertRecord(), XLogReadBufferForRedo(), XLogReadBufferForRedoExtended(), XlogReadTwoPhaseData(), XLogRecGetBlockRefInfo(), XLogRecordPageWithFreeSpace(), XLogRecordSaveFPWs(), XLOGShmemSize(), XLogWalRcvProcessMsg(), XLogWalRcvWrite(), xml_out_internal(), xml_recv(), xml_send(), xmlcomment(), xmlconcat(), xmlelement(), xmlpi(), and xmlroot().

filename

char * filename = FSYNC_FILENAME

static

Definition at line 68 of file pg_test_fsync.c.

Referenced by handle_args(), main(), signal_cleanup(), test_file_descriptor_sync(), test_non_sync(), test_open(), test_open_sync(), and test_sync().

full_buf

char full_buf[DEFAULT_XLOG_SEG_SIZE]

static

Definition at line 66 of file pg_test_fsync.c.

Referenced by prepare_buf(), and test_open().

needs_unlink

int needs_unlink = 0

static

Definition at line 65 of file pg_test_fsync.c.

Referenced by signal_cleanup(), and test_open().

progname

const char* progname

static

Definition at line 62 of file pg_test_fsync.c.

Referenced by handle_args(), and main().

secs_per_test

unsigned int secs_per_test = 5

static

Definition at line 64 of file pg_test_fsync.c.

Referenced by handle_args().

stop_t

struct timeval start_t stop_t

static

Definition at line 68 of file pg_test_fsync.c.

Referenced by print_elapse().