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Install infrastructure for shared-memory free space map. Doesn't actually

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do anything yet, but it has the necessary connections to initialization
and so forth.  Make some gestures towards allowing number of blocks in
a relation to be BlockNumber, ie, unsigned int, rather than signed int.
(I doubt I got all the places that are sloppy about it, yet.)  On the
way, replace the hardwired NLOCKS_PER_XACT fudge factor with a GUC
variable.
This commit is contained in:
Tom Lane
2001-06-27 23:31:40 +00:00
parent b559382134
commit e0c9301c87
26 changed files with 572 additions and 316 deletions
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18
src/backend/utils/misc/guc.c
View File

@@ -4,7 +4,7 @@
* Support for grand unified configuration scheme, including SET
* command, configuration file, and command line options.
*
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.42 2001/06/23 22:23:49 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.43 2001/06/27 23:31:39 tgl Exp $
*
* Copyright 2000 by PostgreSQL Global Development Group
* Written by Peter Eisentraut <peter_e@gmx.net>.
@@ -31,6 +31,8 @@
#include "optimizer/paths.h"
#include "optimizer/planmain.h"
#include "parser/parse_expr.h"
#include "storage/freespace.h"
#include "storage/lock.h"
#include "storage/proc.h"
#include "tcop/tcopprot.h"
#include "utils/datetime.h"
@@ -270,11 +272,16 @@ static struct config_int
*/
{"max_connections", PGC_POSTMASTER, &MaxBackends,
DEF_MAXBACKENDS, 1, MAXBACKENDS, NULL, NULL},
{"shared_buffers", PGC_POSTMASTER, &NBuffers,
DEF_NBUFFERS, 16, INT_MAX, NULL, NULL},
{"port", PGC_POSTMASTER, &PostPortNumber,
DEF_PGPORT, 1, 65535, NULL, NULL},
{"unix_socket_permissions", PGC_POSTMASTER, &Unix_socket_permissions,
0777, 0000, 0777, NULL, NULL},
{"sort_mem", PGC_USERSET, &SortMem,
512, 4*BLCKSZ/1024, INT_MAX, NULL, NULL},
@@ -290,8 +297,13 @@ static struct config_int
{"max_expr_depth", PGC_USERSET, &max_expr_depth,
DEFAULT_MAX_EXPR_DEPTH, 10, INT_MAX, NULL, NULL},
{"unix_socket_permissions", PGC_POSTMASTER, &Unix_socket_permissions,
0777, 0000, 0777, NULL, NULL},
{"max_fsm_relations", PGC_POSTMASTER, &MaxFSMRelations,
100, 10, INT_MAX, NULL, NULL},
{"max_fsm_pages", PGC_POSTMASTER, &MaxFSMPages,
10000, 1000, INT_MAX, NULL, NULL},
{"max_locks_per_xact", PGC_POSTMASTER, &max_locks_per_xact,
64, 10, INT_MAX, NULL, NULL},
{"checkpoint_segments", PGC_SIGHUP, &CheckPointSegments,
3, 1, INT_MAX, NULL, NULL},

13
src/backend/utils/misc/postgresql.conf.sample
View File

@@ -44,11 +44,19 @@
#krb_server_keyfile = ''
#
# Shared Memory Size
#
#shared_buffers = 64 # 2*max_connections, min 16
#max_fsm_relations = 100 # min 10
#max_fsm_pages = 10000 # min 1000
#max_locks_per_xact = 64 # min 10
#wal_buffers = 8 # min 4
#
# Performance
#
#sort_mem = 512
#shared_buffers = 64 # 2*max_connections, min 16
#fsync = true
@@ -78,7 +86,7 @@
# GEQO Optimizer Parameters
#
#geqo_threshold = 11
#geqo_pool_size = 0 #default based in tables, range 128-1024
#geqo_pool_size = 0 #default based on #tables in query, range 128-1024
#geqo_effort = 1
#geqo_generations = 0
#geqo_random_seed = -1 # auto-compute seed
@@ -87,7 +95,6 @@
#
# Write-ahead log (WAL)
#
#wal_buffers = 8 # min 4
#wal_files = 0 # range 0-64
#wal_sync_method = fsync # fsync or fdatasync or open_sync or open_datasync
# Note: default wal_sync_method varies across platforms