*** src/backend/storage/ipc/ipc.c.orig	Wed Jul 25 15:58:56 2007
--- src/backend/storage/ipc/ipc.c	Sat Nov  3 23:00:41 2007
***************
*** 126,131 ****
--- 126,136 ----
  		 *	$PGDATA/gprof/8845/gmon.out
  		 *		...
  		 *
+ 		 * To avoid undesirable disk space bloat, autovacuum workers are
+ 		 * discriminated against: all their gmon.out files go into the same
+ 		 * subdirectory.  Without this, an installation that is "just sitting
+ 		 * there" nonetheless eats megabytes of disk space every few seconds.
+ 		 *
  		 * Note that we do this here instead of in an on_proc_exit() 
  		 * callback because we want to ensure that this code executes
  		 * last - we don't want to interfere with any other on_proc_exit()
***************
*** 133,139 ****
  		 */
  		char gprofDirName[32];
  
! 		snprintf(gprofDirName, 32, "gprof/%d", (int) getpid());
  	    
  		mkdir("gprof", 0777);
  		mkdir(gprofDirName, 0777);
--- 138,147 ----
  		 */
  		char gprofDirName[32];
  
! 		if (IsAutoVacuumWorkerProcess())
! 			snprintf(gprofDirName, 32, "gprof/avworker");
! 		else
! 			snprintf(gprofDirName, 32, "gprof/%d", (int) getpid());
  	    
  		mkdir("gprof", 0777);
  		mkdir(gprofDirName, 0777);