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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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4
src/backend/storage/lmgr/lock.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.140 2004/09/12 18:30:50 tgl Exp $
* $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.141 2004/09/28 20:46:32 tgl Exp $
*
* NOTES
* Outside modules can create a lock table and acquire/release
@@ -241,7 +241,7 @@ LockMethodTableInit(const char *tabName,
/* Compute init/max size to request for lock hashtables */
max_table_size = NLOCKENTS(maxBackends);
init_table_size = max_table_size / 10;
init_table_size = max_table_size / 2;
/* Allocate a string for the shmem index table lookups. */
/* This is just temp space in this routine, so palloc is OK. */