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

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to avoid unnecessary consumption of semaphores.
This commit is contained in:
Tom Lane 2002-10-03 19:19:09 +00:00
parent edf497dec9
commit 565c97bea5
1 changed files with 8 additions and 5 deletions
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13
src/backend/utils/init/postinit.c
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@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * 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 */ if (!IsUnderPostmaster) /* postmaster already did this */
{ {
/* /*
* we're running a postgres backend by itself with no front end or * We're running a postgres bootstrap process or a standalone backend.
* postmaster. Create private "shmem" and semaphores. Setting * Create private "shmem" and semaphores. Force MaxBackends to 1 so
* MaxBackends = 16 is arbitrary. * 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);
} }
} }