In a bootstrap process or standalone backend, set MaxBackends = 1

to avoid unnecessary consumption of semaphores.

diff --git a/src/backend/utils/init/postinit.c b/src/backend/utils/init/postinit.c
index ee4abdff8834725aeb2ac32a80ba3d59c8d5b696..9ac71c6a812ed01a93fa7f451aa6df2538794aae 100644 (file)
--- a/src/backend/utils/init/postinit.c
+++ b/src/backend/utils/init/postinit.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.116 2002/09/04 20:31:31 momjian Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.117 2002/10/03 19:19:09 tgl Exp $
  *
  *
  *-------------------------------------------------------------------------
@@ -172,11 +172,14 @@ InitCommunication(void)
    if (!IsUnderPostmaster)     /* postmaster already did this */
    {
        /*
-        * we're running a postgres backend by itself with no front end or
-        * postmaster.  Create private "shmem" and semaphores.  Setting
-        * MaxBackends = 16 is arbitrary.
+        * We're running a postgres bootstrap process or a standalone backend.
+        * Create private "shmem" and semaphores.  Force MaxBackends to 1 so
+        * that we don't allocate more resources than necessary.
         */
-       CreateSharedMemoryAndSemaphores(true, 16, 0);
+       SetConfigOption("max_connections", "1",
+                       PGC_POSTMASTER, PGC_S_OVERRIDE);
+
+       CreateSharedMemoryAndSemaphores(true, MaxBackends, 0);
    }
 }