pg_test_fsync.c File Reference

#include "postgres_fe.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 "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)   do { pg_log_error("%s: %m", _(msg)); exit(1); } while(0)

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 (int sig)
static void	signal_cleanup (int sig)
static void	print_elapse (struct timeval start_t, struct timeval stop_t, int ops)
int	main (int argc, char *argv[])

Variables
static const char *	progname
static 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 bool	alarm_triggered = false

Macro Definition Documentation

die

#define die

(

msg

)

do { pg_log_error("%s: %m", _(msg)); exit(1); } while(0)

Definition at line 96 of file pg_test_fsync.c.

Referenced by ApplyLauncherMain(), ApplyWorkerMain(), autoprewarm_database_main(), AutoVacWorkerMain(), ParallelWorkerMain(), test_file_descriptor_sync(), test_non_sync(), test_open(), test_open_sync(), test_sync(), and WalSndSignals().

FSYNC_FILENAME

#define FSYNC_FILENAME   "./pg_test_fsync.out"

Definition at line 23 of file pg_test_fsync.c.

LABEL_FORMAT

#define LABEL_FORMAT   " %-30s"

Definition at line 27 of file pg_test_fsync.c.

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

NA_FORMAT

#define NA_FORMAT   "%21s\n"

Definition at line 28 of file pg_test_fsync.c.

Referenced by test_open_sync(), and test_sync().

OPS_FORMAT

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

Definition at line 30 of file pg_test_fsync.c.

Referenced by print_elapse().

START_TIMER

#define START_TIMER

Value:

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

Definition at line 35 of file pg_test_fsync.c.

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

STOP_TIMER

#define STOP_TIMER

Value:

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

Definition at line 56 of file pg_test_fsync.c.

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

USECS_SEC

#define USECS_SEC   1000000

Definition at line 31 of file pg_test_fsync.c.

Referenced by print_elapse().

XLOG_BLCKSZ_K

#define XLOG_BLCKSZ_K   (XLOG_BLCKSZ / 1024)

Definition at line 25 of file pg_test_fsync.c.

Referenced by test_non_sync(), and test_sync().

Function Documentation

handle_args()

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

static

Definition at line 141 of file pg_test_fsync.c.

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

Referenced by main().

{
    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 */

    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':
                secs_per_test = atoi(optarg);
                break;

            default:
                fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
                        progname);
                exit(1);
                break;
        }
    }

    if (argc > optind)
    {
        pg_log_error("too many command-line arguments (first is \"%s\")",
                     argv[optind]);
        fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
                progname);
        exit(1);
    }

    printf(ngettext("%d second per test\n",
                    "%d seconds per test\n",
                    secs_per_test),
           secs_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
}

main()

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

Definition at line 100 of file pg_test_fsync.c.

References filename, get_progname(), handle_args(), pg_logging_init(), 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().

{
    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

    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;
}

prepare_buf()

static void prepare_buf ( void  )

static

Definition at line 208 of file pg_test_fsync.c.

References buf, DEFAULT_XLOG_SEG_SIZE, full_buf, random(), and TYPEALIGN.

Referenced by main().

{
    int         ops;

    /* write random data into buffer */
    for (ops = 0; ops < DEFAULT_XLOG_SEG_SIZE; ops++)
        full_buf[ops] = random();

    buf = (char *) TYPEALIGN(XLOG_BLCKSZ, full_buf);
}

print_elapse()

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

static

Definition at line 579 of file pg_test_fsync.c.

References _, OPS_FORMAT, printf, and USECS_SEC.

{
    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);
}

process_alarm()

static void process_alarm ( int  sig )

static

Definition at line 591 of file pg_test_fsync.c.

References alarm_triggered, and secs_per_test.

Referenced by main().

{
    alarm_triggered = true;
}

signal_cleanup()

static void signal_cleanup ( int  sig )

static

Definition at line 549 of file pg_test_fsync.c.

References fd(), filename, needs_unlink, and pg_fsync_writethrough().

Referenced by main().

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

test_file_descriptor_sync()

static void test_file_descriptor_sync ( void  )

static

Definition at line 455 of file pg_test_fsync.c.

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

Referenced by main().

{
    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, 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, 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, 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, 0)) == -1)
            die("could not open output file");
        if (fsync(tmpfile) != 0)
            die("fsync failed");
        close(tmpfile);
    }
    STOP_TIMER;
}

test_non_sync()

static void test_non_sync ( void  )

static

Definition at line 524 of file pg_test_fsync.c.

References _, alarm_triggered, buf, close, die, filename, LABEL_FORMAT, printf, START_TIMER, generate_unaccent_rules::stdout, STOP_TIMER, write, and XLOG_BLCKSZ_K.

Referenced by main().

{
    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);

    START_TIMER;
    for (ops = 0; alarm_triggered == false; ops++)
    {
        if ((tmpfile = open(filename, O_RDWR, 0)) == -1)
            die("could not open output file");
        if (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
            die("write failed");
        close(tmpfile);
    }
    STOP_TIMER;
}

test_open()

static void test_open ( void  )

static

Definition at line 220 of file pg_test_fsync.c.

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

Referenced by main().

{
    int         tmpfile;

    /*
     * test if we can open the target file
     */
    if ((tmpfile = open(filename, O_RDWR | O_CREAT, 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);
}

test_open_sync()

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

static

Definition at line 420 of file pg_test_fsync.c.

References _, alarm_triggered, buf, close, die, filename, LABEL_FORMAT, NA_FORMAT, PG_O_DIRECT, printf, START_TIMER, generate_unaccent_rules::stdout, STOP_TIMER, and write.

Referenced by test_open_syncs().

{
#ifdef OPEN_SYNC_FLAG
    int         tmpfile,
                ops,
                writes;
#endif

    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, _("n/a*"));
    else
    {
        START_TIMER;
        for (ops = 0; alarm_triggered == false; ops++)
        {
            for (writes = 0; writes < 16 / writes_size; writes++)
                if (write(tmpfile, buf, writes_size * 1024) !=
                    writes_size * 1024)
                    die("write failed");
            if (lseek(tmpfile, 0, SEEK_SET) == -1)
                die("seek failed");
        }
        STOP_TIMER;
        close(tmpfile);
    }
#else
    printf(NA_FORMAT, _("n/a"));
#endif
}

test_open_syncs()

static void test_open_syncs ( void  )

static

Definition at line 403 of file pg_test_fsync.c.

References _, printf, and test_open_sync().

Referenced by main().

{
    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);
}

test_sync()

static void test_sync ( int  writes_per_op )

static

Definition at line 242 of file pg_test_fsync.c.

References _, alarm_triggered, buf, close, die, filename, fsync, LABEL_FORMAT, NA_FORMAT, O_DSYNC, pg_fsync_writethrough(), PG_O_DIRECT, printf, START_TIMER, generate_unaccent_rules::stdout, STOP_TIMER, write, and XLOG_BLCKSZ_K.

Referenced by main().

{
    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 OPEN_DATASYNC_FLAG
    if ((tmpfile = open(filename, O_RDWR | O_DSYNC | PG_O_DIRECT, 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 (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
                    die("write failed");
            if (lseek(tmpfile, 0, SEEK_SET) == -1)
                die("seek failed");
        }
        STOP_TIMER;
        close(tmpfile);
    }
#else
    printf(NA_FORMAT, _("n/a"));
#endif

/*
 * Test fdatasync if available
 */
    printf(LABEL_FORMAT, "fdatasync");
    fflush(stdout);

#ifdef HAVE_FDATASYNC
    if ((tmpfile = open(filename, O_RDWR, 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 (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
                die("write failed");
        fdatasync(tmpfile);
        if (lseek(tmpfile, 0, SEEK_SET) == -1)
            die("seek failed");
    }
    STOP_TIMER;
    close(tmpfile);
#else
    printf(NA_FORMAT, _("n/a"));
#endif

/*
 * Test fsync
 */
    printf(LABEL_FORMAT, "fsync");
    fflush(stdout);

    if ((tmpfile = open(filename, O_RDWR, 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 (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
                die("write failed");
        if (fsync(tmpfile) != 0)
            die("fsync failed");
        if (lseek(tmpfile, 0, SEEK_SET) == -1)
            die("seek 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, 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 (write(tmpfile, buf, XLOG_BLCKSZ) != XLOG_BLCKSZ)
                die("write failed");
        if (pg_fsync_writethrough(tmpfile) != 0)
            die("fsync failed");
        if (lseek(tmpfile, 0, SEEK_SET) == -1)
            die("seek 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 OPEN_SYNC_FLAG
    if ((tmpfile = open(filename, O_RDWR | OPEN_SYNC_FLAG | PG_O_DIRECT, 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 (write(tmpfile, buf, 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");
            if (lseek(tmpfile, 0, SEEK_SET) == -1)
                die("seek 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"));
    }
}

Variable Documentation

alarm_triggered

bool alarm_triggered = false

static

Definition at line 72 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_clear_incomplete_split(), _bt_doinsert(), _bt_endpoint(), _bt_first(), _bt_get_endpoint(), _bt_getbuf(), _bt_getstackbuf(), _bt_is_page_halfdead(), _bt_killitems(), _bt_moveright(), _bt_relandgetbuf(), _bt_unlink_halfdead_page(), _bt_walk_left(), _conv(), _discoverArchiveFormat(), _EndBlob(), _hash_doinsert(), _hash_first(), _hash_getbucketbuf_from_hashkey(), _hash_getbuf(), _hash_getbuf_with_condlock_cleanup(), _hash_getbuf_with_strategy(), _hash_getinitbuf(), _hash_getnewbuf(), _hash_init(), _hash_kill_items(), _hash_next(), _hash_readpage(), _LoadBlobs(), _PG_init(), _PrintFileData(), _skipData(), _tarAddFile(), _tarPositionTo(), _WriteBlobData(), abbroffset(), AbortBufferIO(), add_tablespace_footer(), aes_cbc_decrypt(), AlterSequence(), appendAggOrderBy(), appendConditions(), appendContextKeyword(), appendFunctionName(), appendGroupByClause(), appendLimitClause(), appendOrderByClause(), array_dims(), array_recv(), array_send(), array_to_text_internal(), asyncQueueReadAllNotifications(), autoprewarm_database_main(), BasicOpenFilePerm(), be_lo_export(), big5_to_euc_tw(), bit_recv(), boolrecv(), boolsend(), bootstrap_template1(), box_recv(), box_send(), bpcharrecv(), bqarr_in(), brin_getinsertbuffer(), brin_vacuum_scan(), brin_xlog_createidx(), brin_xlog_revmap_extend(), bringetbitmap(), brininsert(), brinsummarize(), btvacuumpage(), btvacuumscan(), buf_init(), BufferAlloc(), build_client_final_message(), build_client_first_message(), build_regexp_match_result(), build_regexp_split_result(), BuildIndexValueDescription(), bytearecv(), cache_locale_time(), calc_s2k_iter_salted(), calc_s2k_salted(), calc_s2k_simple(), cash_out(), cash_recv(), cash_send(), cash_words(), charrecv(), charsend(), check_key_cksum(), check_strxfrm_bug(), check_TSCurrentConfig(), CheckForExternalTrigger(), CheckPointTwoPhase(), CheckSCRAMAuth(), checkXLogConsistency(), ChooseExtendedStatisticNameAddition(), ChooseForeignKeyConstraintNameAddition(), ChooseIndexColumnNames(), ChooseIndexNameAddition(), cidr_recv(), cidrecv(), cidsend(), circle_recv(), circle_send(), cluster_conn_opts(), compile_pltcl_function(), complex_recv(), complex_send(), ConditionalLockBuffer(), conninfo_parse(), conninfo_uri_decode(), conninfo_uri_parse_options(), constructConnStr(), convertJsonbScalar(), ConvertTriggerToFK(), copy_read_data(), CopyGetInt16(), CopyGetInt32(), CopySendInt16(), CopySendInt32(), count_nondeletable_pages(), create_cursor(), createBackupLabel(), cstring_recv(), cstring_send(), cube_out(), date_out(), date_recv(), date_send(), date_test_fmt(), datum_to_json(), dblink_close(), dblink_fdw_validator(), dblink_fetch(), dblink_open(), DebugFileOpen(), decrypt_read(), DeleteAllExportedSnapshotFiles(), deparse_expression_pretty(), deparseAggref(), deparseArrayExpr(), deparseBoolExpr(), deparseConst(), deparseDirectDeleteSql(), deparseDirectUpdateSql(), deparseDistinctExpr(), deparseExplicitTargetList(), deparseFromExpr(), deparseFromExprForRel(), deparseFuncExpr(), deparseLockingClause(), deparseNullTest(), deparseOpExpr(), deparseScalarArrayOpExpr(), deparseSelectSql(), deparseSelectStmtForRel(), deparseSortGroupClause(), deparseSubqueryTargetList(), deparseSubscriptingRef(), describeAccessMethods(), describeAggregates(), describeFunctions(), describeOneTableDetails(), describeOneTSConfig(), describeOneTSParser(), describeOperators(), describePublications(), DescribeQuery(), describeRoles(), describeSubscriptions(), describeTableDetails(), describeTablespaces(), describeTypes(), DispatchJobForTocEntry(), do_compile(), do_lo_list(), do_setval(), domain_recv(), drainSelfPipe(), DropDatabaseBuffers(), dropRoles(), dsm_cleanup_for_mmap(), dump_lo_buf(), dumpBlobs(), dumpDatabaseConfig(), dumpGroups(), dumpRoleMembership(), dumpRoles(), dumpTablespaces(), dumpTimestamp(), dumpUserConfig(), ean13_out(), ean2isn(), EndCompressor(), enum_recv(), enum_send(), escape_param_str(), escape_xml(), euc_tw_to_big5(), ExceptionalCondition(), exec_command_password(), exec_command_sf_sv(), ExecBuildSlotPartitionKeyDescription(), ExecBuildSlotValueDescription(), ExecEvalXmlExpr(), ExecQueryUsingCursor(), ExecuteSimpleCommands(), ExplainPropertyFloat(), ExplainPropertyInteger(), exportFile(), ExportSnapshot(), file_fdw_validator(), fill_seq_with_data(), find_provider(), FindStreamingStart(), FinishPreparedTransaction(), flatten_reloptions(), flatten_set_variable_args(), float4_numeric(), float4recv(), float4send(), float8_numeric(), float8recv(), float8send(), flush_pipe_input(), fmtlong(), format_aggregate_signature(), format_operator_internal(), format_procedure_internal(), format_type_extended(), formatPGVersionNumber(), FreePageManagerDump(), FreeSpaceMapPrepareTruncateRel(), fsm_readbuf(), fsm_search(), fsm_set_and_search(), fsm_vacuum_page(), generate_operator_name(), generate_trgm_only(), generate_wildcard_trgm(), 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_delete_query_def(), get_errno_symbol(), get_from_clause(), get_from_clause_coldeflist(), get_from_clause_item(), get_func_expr(), get_insert_query_def(), get_oper_expr(), get_parallel_object_list(), get_prompt(), get_query_def(), get_range_partbound_string(), get_raw_page_internal(), 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(), getaddrinfo(), GetBufferFromRing(), GetRecordedFreeSpace(), ginCompressPostingList(), gistfixsplit(), gnuish_strerror_r(), GROW(), handleCopyIn(), handleCopyOut(), hash_xlog_split_page(), hashbpchar(), hashbpcharextended(), hashbucketcleanup(), hashbulkdelete(), hashtext(), hashtextextended(), heap_compute_xid_horizon_for_tuples(), heap_lock_updated_tuple_rec(), heap_vacuum_rel(), heapam_relation_copy_for_cluster(), hmac_finish(), hstore_recv(), hstore_send(), hstorePairs(), ignore_boolean_expression(), importFile(), inet_recv(), infile(), init_params(), InitBufferPool(), initialize_worker_spi(), InitLocalBuffers(), int2recv(), int2send(), int2vectorrecv(), int4recv(), int4send(), int8_avg_deserialize(), int8_avg_serialize(), int8out(), int8recv(), int8send(), interval_out(), interval_recv(), interval_send(), 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_vacuum_heap(), libpqrcv_get_conninfo(), line_recv(), line_send(), listAllDbs(), listCasts(), listCollations(), listConversions(), listDbRoleSettings(), listDefaultACLs(), listDomains(), listEventTriggers(), listExtensionContents(), listExtensions(), listForeignDataWrappers(), listForeignServers(), listForeignTables(), listLanguages(), listOneExtensionContents(), listPartitionedTables(), listPublications(), listSchemas(), listTables(), listTSConfigs(), listTSConfigsVerbose(), listTSDictionaries(), listTSParsers(), listTSParsersVerbose(), listTSTemplates(), listUserMappings(), llvm_create_types(), lo_export(), lo_import_internal(), load_module(), load_resultmap(), locale_date_order(), LockBuffer(), log_newpage_range(), LogicalDecodingProcessRecord(), LogicalRepApplyLoop(), lquery_in(), lquery_out(), lseg_recv(), lseg_send(), ltree_crc32_sz(), ltree_in(), ltree_out(), ltxtq_in(), macaddr8_recv(), macaddr8_send(), macaddr_recv(), macaddr_send(), main(), make_absolute_path(), make_ruledef(), map_sql_identifier_to_xml_name(), map_sql_value_to_xml_value(), map_xml_name_to_sql_identifier(), MemoryContextSwitchTo(), merge_children(), mp_int_read_binary(), mp_int_read_unsigned(), mp_int_sqrt(), mp_px_rand(), mxid_to_string(), namerecv(), namesend(), 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(), objectDescription(), oidrecv(), oidsend(), oidvectorrecv(), overwrite(), packArcInfoCmp(), pad_eme_pkcs1_v15(), parse_literal_data(), parse_snapshot(), parseAclItem(), parseServiceFile(), passwordFromFile(), path_recv(), path_send(), perform_base_backup(), permissionsList(), pg_armor(), pg_b64_decode(), pg_b64_encode(), pg_base64_decode(), pg_base64_encode(), pg_collation_actual_version(), 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_functiondef(), pg_get_indexdef_worker(), pg_get_partkeydef_worker(), 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_out(), pg_lsn_recv(), pg_lsn_send(), pg_prewarm(), pg_rightmost_one_pos64(), pg_saslprep(), pg_sequence_last_value(), pg_size_pretty(), pg_strerror_r(), pgp_armor_decode(), pgp_extract_armor_headers(), pgp_key_id_w(), pgp_mpi_hash(), pgp_mpi_write(), pgrowlocks(), PGSharedMemoryAttach(), 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_waitforsinglesocket(), pgxmlNodeSetToText(), pickout(), PLy_exception_set(), PLy_exception_set_plural(), PLyObject_ToJsonbValue(), point_recv(), point_send(), poly_recv(), poly_send(), populate_scalar(), postgres_fdw_validator(), postgresImportForeignSchema(), PostgresMain(), postgresql_fdw_validator(), pq_sendint(), PQoidStatus(), prefix_init(), prepare_buf(), PrescanPreparedTransactions(), print_wchar_str(), PrintBufferLeakWarning(), PrintQueryStatus(), printRemoteParam(), printRemotePlaceholder(), printsimple(), printsimple_startup(), printSubscripts(), printtup(), printtup_20(), printtup_internal_20(), process_file(), process_pipe_input(), processIndirection(), ProcessStartupPacket(), ProcessTwoPhaseBuffer(), ProcSleep(), prompt_for_password(), psql_get_variable(), puttzcode(), puttzcodepass(), pwdfMatchesString(), px_debug(), px_find_combo(), 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_text_file(), read_whole_file(), ReadBufferExtended(), ReadDataFromArchiveNone(), readMessageFromPipe(), ReadStr(), readtup_alloc(), ReadTwoPhaseFile(), ReadyForQuery(), ReceiveCopyBegin(), record_in(), record_out(), record_recv(), record_send(), RecoverPreparedTransactions(), recv_password_packet(), regression_main(), RelationCopyStorage(), repairDependencyLoop(), replace_text_regexp(), report_invalid_encoding(), report_untranslatable_char(), ResetSequence(), restore(), restoreTwoPhaseData(), revmap_physical_extend(), rewind_copy_file_range(), rm_redo_error_callback(), rstacktoodeep(), run_crypt_des(), sanitize_char(), sanitize_str(), scan_file(), search_directory(), send_message_to_frontend(), send_message_to_server_log(), sendAuthRequest(), SendBackupHeader(), SendCopyBegin(), sendFile(), sendFileWithContent(), SendFunctionResult(), SendNegotiateProtocolVersion(), SendQuery(), SendTimeLineHistory(), SendXlogRecPtrResult(), sepgsql_audit_log(), serialize_deflist(), set_backtrace(), SetWALSegSize(), sha224_bytea(), sha256_bytea(), sha384_bytea(), sha512_bytea(), show_data_directory_mode(), show_log_file_mode(), show_unix_socket_permissions(), ShowTransactionStateRec(), simple_prompt(), SortTocFromFile(), SPI_result_code_string(), SplitToVariants(), ssl_extension_info(), StandbyRecoverPreparedTransactions(), StandbyTransactionIdIsPrepared(), StartBufferIO(), StartLogicalReplication(), StartReplication(), StartupXLOG(), statapprox_heap(), stop_postmaster(), str_time(), StrategyGetBuffer(), string2ean(), t_readline(), tar_getlasterror(), tarClose(), test_file_descriptor_sync(), test_non_sync(), test_open_sync(), test_sync(), 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(), truncate_identifier(), try_complete_step(), ts_stat_sql(), tsquery_rewrite_query(), tsvectorin(), tsvectorrecv(), tsvectorsend(), txid_snapshot_recv(), txid_snapshot_send(), typeStringToTypeName(), unaccent_lexize(), unknownrecv(), unknownsend(), UnlockBuffers(), unpack_sql_state(), uuid_generate_v1mc(), uuid_out(), vacuum_one_database(), vacuumlo(), varbit_recv(), varbit_send(), varcharrecv(), vm_readbuf(), void_send(), WaitEventSetWait(), WaitForCommands(), WalReceiverMain(), write_auto_conf_file(), write_csvlog(), write_target_range(), xidrecv(), xidsend(), xlog_redo(), XLogDumpXLogRead(), XLogInitBufferForRedo(), XLogInsertRecord(), XLogRead(), XLogRecordPageWithFreeSpace(), XLOGShmemSize(), xml_out_internal(), xml_send(), xmlcomment(), xmlconcat(), xmlpi(), xmlroot(), and yearistype().

filename

char * filename = FSYNC_FILENAME

static

Definition at line 69 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 67 of file pg_test_fsync.c.

Referenced by prepare_buf(), and test_open().

needs_unlink

int needs_unlink = 0

static

Definition at line 66 of file pg_test_fsync.c.

Referenced by signal_cleanup(), and test_open().

progname

const char* progname

static

Definition at line 63 of file pg_test_fsync.c.

Referenced by handle_args(), and main().

secs_per_test

int secs_per_test = 5

static

Definition at line 65 of file pg_test_fsync.c.

Referenced by handle_args(), and process_alarm().

stop_t

struct timeval start_t stop_t

static

Definition at line 70 of file pg_test_fsync.c.