From 8ecbc46bdb5815a52b8a0f2c88b891ad49ce50dd Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sat, 20 Nov 2004 20:16:54 +0000 Subject: [PATCH] Reduce the default size of the local lock hash table. There's usually no need for it to be nearly as big as the global hash table, and since it's not in shared memory it can grow if it does need to be bigger. By reducing the size, we speed up hash_seq_search(), which saves a significant fraction of subtransaction entry/exit overhead. --- src/backend/storage/lmgr/lock.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/backend/storage/lmgr/lock.c b/src/backend/storage/lmgr/lock.c index 6fcb4d4343..4cf3302de5 100644 --- a/src/backend/storage/lmgr/lock.c +++ b/src/backend/storage/lmgr/lock.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.143 2004/10/25 00:46:41 neilc Exp $ + * $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.144 2004/11/20 20:16:54 tgl Exp $ * * NOTES * Outside modules can create a lock table and acquire/release @@ -331,7 +331,7 @@ LockMethodTableInit(const char *tabName, sprintf(shmemName, "%s (locallock hash)", tabName); LockMethodLocalHash[lockmethodid] = hash_create(shmemName, - init_table_size, + 128, &info, hash_flags);