*** a/doc/src/sgml/ref/pg_receivexlog.sgml
--- b/doc/src/sgml/ref/pg_receivexlog.sgml
***************
*** 196,201 **** PostgreSQL documentation
--- 196,212 ----
       </varlistentry>
  
       <varlistentry>
+       <term><option>-r</></term>
+       <term><option>--reply-fsync</></term>
+       <listitem>
+        <para>
+         status packets sent to server as soon as after fsync.
+         If you want to report the flush position to the server, should use -S option.
+        </para>
+       </listitem>
+      </varlistentry>
+ 
+      <varlistentry>
        <term><option>-U <replaceable>username</replaceable></option></term>
        <term><option>--username=<replaceable class="parameter">username</replaceable></option></term>
        <listitem>
*** a/src/bin/pg_basebackup/pg_basebackup.c
--- b/src/bin/pg_basebackup/pg_basebackup.c
***************
*** 370,376 **** LogStreamerMain(logstreamer_param *param)
  	if (!ReceiveXlogStream(param->bgconn, param->startptr, param->timeline,
  						   param->sysidentifier, param->xlogdir,
  						   reached_end_position, standby_message_timeout,
! 						   NULL, 0))
  
  		/*
  		 * Any errors will already have been reported in the function process,
--- 370,376 ----
  	if (!ReceiveXlogStream(param->bgconn, param->startptr, param->timeline,
  						   param->sysidentifier, param->xlogdir,
  						   reached_end_position, standby_message_timeout,
! 						   NULL, 0, false))
  
  		/*
  		 * Any errors will already have been reported in the function process,
*** a/src/bin/pg_basebackup/pg_receivexlog.c
--- b/src/bin/pg_basebackup/pg_receivexlog.c
***************
*** 38,44 **** static int	noloop = 0;
  static int	standby_message_timeout = 10 * 1000;		/* 10 sec = default */
  static int	fsync_interval = 0; /* 0 = default */
  static volatile bool time_to_abort = false;
! 
  
  static void usage(void);
  static XLogRecPtr FindStreamingStart(uint32 *tli);
--- 38,44 ----
  static int	standby_message_timeout = 10 * 1000;		/* 10 sec = default */
  static int	fsync_interval = 0; /* 0 = default */
  static volatile bool time_to_abort = false;
! static bool	reply_fsync = false;
  
  static void usage(void);
  static XLogRecPtr FindStreamingStart(uint32 *tli);
***************
*** 74,79 **** usage(void)
--- 74,81 ----
  	printf(_("  -p, --port=PORT        database server port number\n"));
  	printf(_("  -s, --status-interval=INTERVAL\n"
  			 "                         time between status packets sent to server (in seconds)\n"));
+ 	printf(_("  -r, --reply-fsync      status packets sent to server as soon as after fsync\n"
+ 			 "                         If you want to report the flush position to the server, should use -S option.\n"));
  	printf(_("  -U, --username=NAME    connect as specified database user\n"));
  	printf(_("  -w, --no-password      never prompt for password\n"));
  	printf(_("  -W, --password         force password prompt (should happen automatically)\n"));
***************
*** 334,340 **** StreamLog(void)
  
  	ReceiveXlogStream(conn, startpos, starttli, NULL, basedir,
  					  stop_streaming, standby_message_timeout, ".partial",
! 					  fsync_interval);
  
  	PQfinish(conn);
  }
--- 336,342 ----
  
  	ReceiveXlogStream(conn, startpos, starttli, NULL, basedir,
  					  stop_streaming, standby_message_timeout, ".partial",
! 					  fsync_interval, reply_fsync);
  
  	PQfinish(conn);
  }
***************
*** 368,373 **** main(int argc, char **argv)
--- 370,376 ----
  		{"no-password", no_argument, NULL, 'w'},
  		{"password", no_argument, NULL, 'W'},
  		{"status-interval", required_argument, NULL, 's'},
+ 		{"reply-fsync", no_argument, NULL, 'r'},
  		{"slot", required_argument, NULL, 'S'},
  		{"verbose", no_argument, NULL, 'v'},
  		{NULL, 0, NULL, 0}
***************
*** 394,400 **** main(int argc, char **argv)
  		}
  	}
  
! 	while ((c = getopt_long(argc, argv, "D:d:h:p:U:s:S:nF:wWv",
  							long_options, &option_index)) != -1)
  	{
  		switch (c)
--- 397,403 ----
  		}
  	}
  
! 	while ((c = getopt_long(argc, argv, "D:d:h:p:U:s:rS:nF:wWv",
  							long_options, &option_index)) != -1)
  	{
  		switch (c)
***************
*** 435,440 **** main(int argc, char **argv)
--- 438,446 ----
  					exit(1);
  				}
  				break;
+ 			case 'r':
+ 				reply_fsync = true;
+ 				break;
  			case 'S':
  				replication_slot = pg_strdup(optarg);
  				break;
*** a/src/bin/pg_basebackup/receivelog.c
--- b/src/bin/pg_basebackup/receivelog.c
***************
*** 38,44 **** static PGresult *HandleCopyStream(PGconn *conn, XLogRecPtr startpos,
  				 uint32 timeline, char *basedir,
  			   stream_stop_callback stream_stop, int standby_message_timeout,
  				  char *partial_suffix, XLogRecPtr *stoppos,
! 				  int fsync_interval);
  static int CopyStreamPoll(PGconn *conn, long timeout_ms);
  static int CopyStreamReceive(PGconn *conn, long timeout, char **buffer);
  static bool ProcessKeepaliveMsg(PGconn *conn, char *copybuf, int len,
--- 38,44 ----
  				 uint32 timeline, char *basedir,
  			   stream_stop_callback stream_stop, int standby_message_timeout,
  				  char *partial_suffix, XLogRecPtr *stoppos,
! 				  int fsync_interval, bool reply_fsync);
  static int CopyStreamPoll(PGconn *conn, long timeout_ms);
  static int CopyStreamReceive(PGconn *conn, long timeout, char **buffer);
  static bool ProcessKeepaliveMsg(PGconn *conn, char *copybuf, int len,
***************
*** 443,448 **** CheckServerVersionForStreaming(PGconn *conn)
--- 443,451 ----
   * fsync_interval controls how often we flush to the received WAL file,
   * in milliseconds.
   *
+  * If 'reply_fsync' is true, status packets sent to server as soon as
+  * after fsync.
+  *
   * Note: The log position *must* be at a log segment start!
   */
  bool
***************
*** 450,456 **** ReceiveXlogStream(PGconn *conn, XLogRecPtr startpos, uint32 timeline,
  				  char *sysidentifier, char *basedir,
  				  stream_stop_callback stream_stop,
  				  int standby_message_timeout, char *partial_suffix,
! 				  int fsync_interval)
  {
  	char		query[128];
  	char		slotcmd[128];
--- 453,459 ----
  				  char *sysidentifier, char *basedir,
  				  stream_stop_callback stream_stop,
  				  int standby_message_timeout, char *partial_suffix,
! 				  int fsync_interval, bool reply_fsync)
  {
  	char		query[128];
  	char		slotcmd[128];
***************
*** 595,601 **** ReceiveXlogStream(PGconn *conn, XLogRecPtr startpos, uint32 timeline,
  		/* Stream the WAL */
  		res = HandleCopyStream(conn, startpos, timeline, basedir, stream_stop,
  							   standby_message_timeout, partial_suffix,
! 							   &stoppos, fsync_interval);
  		if (res == NULL)
  			goto error;
  
--- 598,604 ----
  		/* Stream the WAL */
  		res = HandleCopyStream(conn, startpos, timeline, basedir, stream_stop,
  							   standby_message_timeout, partial_suffix,
! 							   &stoppos, fsync_interval, reply_fsync);
  		if (res == NULL)
  			goto error;
  
***************
*** 760,770 **** static PGresult *
  HandleCopyStream(PGconn *conn, XLogRecPtr startpos, uint32 timeline,
  				 char *basedir, stream_stop_callback stream_stop,
  				 int standby_message_timeout, char *partial_suffix,
! 				 XLogRecPtr *stoppos, int fsync_interval)
  {
  	char	   *copybuf = NULL;
  	int64		last_status = -1;
  	XLogRecPtr	blockpos = startpos;
  
  	still_sending = true;
  
--- 763,774 ----
  HandleCopyStream(PGconn *conn, XLogRecPtr startpos, uint32 timeline,
  				 char *basedir, stream_stop_callback stream_stop,
  				 int standby_message_timeout, char *partial_suffix,
! 				 XLogRecPtr *stoppos, int fsync_interval, bool reply_fsync)
  {
  	char	   *copybuf = NULL;
  	int64		last_status = -1;
  	XLogRecPtr	blockpos = startpos;
+ 	XLogRecPtr	lastFeedbackFlushPosition = startpos;
  
  	still_sending = true;
  
***************
*** 807,820 **** HandleCopyStream(PGconn *conn, XLogRecPtr startpos, uint32 timeline,
  		/*
  		 * Potentially send a status message to the master
  		 */
! 		if (still_sending && standby_message_timeout > 0 &&
! 			feTimestampDifferenceExceeds(last_status, now,
! 										 standby_message_timeout))
  		{
  			/* Time to send feedback! */
  			if (!sendFeedback(conn, blockpos, now, false))
  				goto error;
  			last_status = now;
  		}
  
  		/*
--- 811,826 ----
  		/*
  		 * Potentially send a status message to the master
  		 */
! 		if ((still_sending && standby_message_timeout > 0 &&
! 			feTimestampDifferenceExceeds(last_status, now, standby_message_timeout)) ||
! 			(reply_fsync && lastFeedbackFlushPosition != lastFlushPosition))
  		{
  			/* Time to send feedback! */
  			if (!sendFeedback(conn, blockpos, now, false))
  				goto error;
  			last_status = now;
+ 			if (reply_fsync)
+ 				lastFeedbackFlushPosition = lastFlushPosition;
  		}
  
  		/*
*** a/src/bin/pg_basebackup/receivelog.h
--- b/src/bin/pg_basebackup/receivelog.h
***************
*** 31,36 **** extern bool ReceiveXlogStream(PGconn *conn,
  				  stream_stop_callback stream_stop,
  				  int standby_message_timeout,
  				  char *partial_suffix,
! 				  int fsync_interval);
  
  #endif	/* RECEIVELOG_H */
--- 31,37 ----
  				  stream_stop_callback stream_stop,
  				  int standby_message_timeout,
  				  char *partial_suffix,
! 				  int fsync_interval,
! 				  bool reply_fsync);
  
  #endif	/* RECEIVELOG_H */