diff -rpcd a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
*** a/src/backend/postmaster/postmaster.c	2013-10-04 13:17:03.000000000 +0900
--- b/src/backend/postmaster/postmaster.c	2013-10-04 23:21:39.541000000 +0900
*************** DetermineSleepTime(struct timeval * time
*** 1423,1429 ****
  		if (AbortStartTime > 0)
  		{
  			/* remaining time, but at least 1 second */
! 			timeout->tv_sec = Min(SIGKILL_CHILDREN_AFTER_SECS -
  								  (time(NULL) - AbortStartTime), 1);
  			timeout->tv_usec = 0;
  		}
--- 1423,1429 ----
  		if (AbortStartTime > 0)
  		{
  			/* remaining time, but at least 1 second */
! 			timeout->tv_sec = Max(SIGKILL_CHILDREN_AFTER_SECS -
  								  (time(NULL) - AbortStartTime), 1);
  			timeout->tv_usec = 0;
  		}
*************** ServerLoop(void)
*** 1676,1685 ****
--- 1676,1687 ----
  		 * Note we also do this during recovery from a process crash.
  		 */
  		if ((Shutdown >= ImmediateShutdown || (FatalError && !SendStop)) &&
+ 			AbortStartTime > 0 &&  /* SIGKILL only once */
  			now - AbortStartTime >= SIGKILL_CHILDREN_AFTER_SECS)
  		{
  			/* We were gentle with them before. Not anymore */
  			TerminateChildren(SIGKILL);
+ 			AbortStartTime = 0;
  
  			/*
  			 * Additionally, unless we're recovering from a process crash, it's
*************** reaper(SIGNAL_ARGS)
*** 2584,2590 ****
  			 * Startup succeeded, commence normal operations
  			 */
  			FatalError = false;
- 			AbortStartTime = 0;
  			ReachedNormalRunning = true;
  			pmState = PM_RUN;
  
--- 2586,2591 ----
*************** PostmasterStateMachine(void)
*** 3544,3549 ****
--- 3545,3551 ----
  		StartupPID = StartupDataBase();
  		Assert(StartupPID != 0);
  		pmState = PM_STARTUP;
+ 		AbortStartTime = 0;
  	}
  }
  
*************** sigusr1_handler(SIGNAL_ARGS)
*** 4737,4743 ****
  	{
  		/* WAL redo has started. We're out of reinitialization. */
  		FatalError = false;
- 		AbortStartTime = 0;
  
  		/*
  		 * Crank up the background tasks.  It doesn't matter if this fails,
--- 4739,4744 ----