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The attached patch changes units of the some default values in

postgresql.conf.

- shared_buffers = 32000kB => 32MB
- temp_buffers = 8000kB => 8MB
- wal_buffers = 8 => 64kB

The code of initdb was a bit modified to write MB-unit values.
Values greater than 8000kB are rounded out to MB.

GUC_UNIT_XBLOCKS is added for wal_buffers. It is like GUC_UNIT_BLOCKS,
but uses XLOG_BLCKSZ instead of BLCKSZ.

Also, I cleaned up the test of GUC_UNIT_* flags in preparation to
add more unit flags in less bits.

ITAGAKI Takahiro
This commit is contained in:
Bruce Momjian
2006-10-03 21:11:55 +00:00
parent e15ce612b5
commit 5441a64164
4 changed files with 99 additions and 46 deletions

View File

@ -7,7 +7,7 @@
*
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/utils/guc_tables.h,v 1.28 2006/08/14 02:27:27 momjian Exp $
* $PostgreSQL: pgsql/src/include/utils/guc_tables.h,v 1.29 2006/10/03 21:11:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -132,12 +132,13 @@ struct config_generic
#define GUC_UNIT_KB 0x0400 /* value is in 1 kB */
#define GUC_UNIT_BLOCKS 0x0800 /* value is in blocks */
#define GUC_UNIT_MEMORY (GUC_UNIT_KB|GUC_UNIT_BLOCKS)
#define GUC_UNIT_XBLOCKS 0x0C00 /* value is in xlog blocks */
#define GUC_UNIT_MEMORY 0x0C00 /* mask for KB, BLOCKS, XBLOCKS */
#define GUC_UNIT_MS 0x1000 /* value is in milliseconds */
#define GUC_UNIT_S 0x2000 /* value is in seconds */
#define GUC_UNIT_MIN 0x4000 /* value is in minutes */
#define GUC_UNIT_TIME (GUC_UNIT_MS|GUC_UNIT_S|GUC_UNIT_MIN)
#define GUC_UNIT_TIME 0x7000 /* mask for MS, S, MIN */
/* bit values in status field */
#define GUC_HAVE_TENTATIVE 0x0001 /* tentative value is defined */