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Make the minimum allowed value of work_mem be 64KB always, rather than having

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it vary with BLCKSZ as before.  This agrees with what the documentation says,
and avoids a regression test problem when BLCKSZ is larger than default.
Per recent discussion.
This commit is contained in:
Tom Lane 2008-05-01 19:55:40 +00:00
parent 772f63dd6a
commit 1b1e335b15
2 changed files with 4 additions and 4 deletions
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4
doc/src/sgml/config.sgml
View File

@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.175 2008/04/18 01:42:17 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.176 2008/05/01 19:55:40 tgl Exp $ -->
<chapter Id="runtime-config">
<title>Server Configuration</title>
@ -826,7 +826,7 @@ SET ENABLE_SEQSCAN TO OFF;
<listitem>
<para>
Specifies the amount of memory to be used by internal sort operations
and hash tables before switching to temporary disk files. The value is
and hash tables before switching to temporary disk files. The value
defaults to one megabyte (<literal>1MB</>).
Note that for a complex query, several sort or hash operations might be
running in parallel; each one will be allowed to use as much memory

4
src/backend/utils/misc/guc.c
View File

@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.449 2008/04/29 20:44:49 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.450 2008/05/01 19:55:40 tgl Exp $
*
*--------------------------------------------------------------------
*/
@ -1339,7 +1339,7 @@ static struct config_int ConfigureNamesInt[] =
GUC_UNIT_KB
},
&work_mem,
1024, 8 * BLCKSZ / 1024, MAX_KILOBYTES, NULL, NULL
1024, 64, MAX_KILOBYTES, NULL, NULL
},
{