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Arrange to preallocate all required space for the buffer and FSM hash

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tables in shared memory.  This ensures that overflow of the lock table
creates no long-lasting problems.  Per discussion with Merlin Moncure.
This commit is contained in:
Tom Lane
2004-09-28 20:46:37 +00:00
parent d9b68c8061
commit 3a246cc285
6 changed files with 42 additions and 18 deletions
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6
src/backend/storage/freespace/freespace.c
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@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/freespace/freespace.c,v 1.34 2004/08/29 05:06:47 momjian Exp $
* $PostgreSQL: pgsql/src/backend/storage/freespace/freespace.c,v 1.35 2004/09/28 20:46:27 tgl Exp $
*
*
* NOTES:
@@ -283,8 +283,8 @@ InitFreeSpaceMap(void)
info.hash = tag_hash;
FreeSpaceMapRelHash = ShmemInitHash("Free Space Map Hash",
MaxFSMRelations / 10,
MaxFSMRelations,
MaxFSMRelations + 1,
MaxFSMRelations + 1,
&info,
(HASH_ELEM | HASH_FUNCTION));