From ba9f9bf1b103d72196d76646c6fcc71abbdd51f5 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Tue, 29 Aug 2006 11:37:47 +0000
Subject: [PATCH] Revert change to turn autovacuum on by default.
---
doc/src/sgml/config.sgml | 15 +++++++--------
doc/src/sgml/maintenance.sgml | 10 ++++------
src/backend/utils/misc/guc.c | 16 ++++++++--------
src/backend/utils/misc/postgresql.conf.sample | 14 +++++++-------
4 files changed, 26 insertions(+), 29 deletions(-)
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 22de6b746af..db78a51e6b0 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.77 2006/08/29 02:11:29 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.78 2006/08/29 11:37:47 petere Exp $ -->
<chapter Id="runtime-config">
<title>Server Configuration</title>
@@ -383,7 +383,7 @@ SET ENABLE_SEQSCAN TO OFF;
</para>
<para>
- The default value is 3. The value must be less than the value of
+ The default value is 2. The value must be less than the value of
<varname>max_connections</varname>. This parameter can only be
set at server start.
</para>
@@ -2990,8 +2990,7 @@ SELECT * FROM parent WHERE key = 2400;
<listitem>
<para>
Enables the collection of row-level statistics on database
- activity. This parameter is on by default, because the autovacuum
- daemon needs the collected information.
+ activity. This parameter is off by default.
Only superusers can change this setting.
</para>
</listitem>
@@ -3114,7 +3113,7 @@ SELECT * FROM parent WHERE key = 2400;
<para>
Specifies the minimum number of updated or deleted tuples needed
to trigger a <command>VACUUM</> in any one table.
- The default is 500.
+ The default is 1000.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
This setting can be overridden for individual tables by entries in
@@ -3132,7 +3131,7 @@ SELECT * FROM parent WHERE key = 2400;
<para>
Specifies the minimum number of inserted, updated or deleted tuples
needed to trigger an <command>ANALYZE</> in any one table.
- The default is 250.
+ The default is 500.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
This setting can be overridden for individual tables by entries in
@@ -3151,7 +3150,7 @@ SELECT * FROM parent WHERE key = 2400;
Specifies a fraction of the table size to add to
<varname>autovacuum_vacuum_threshold</varname>
when deciding whether to trigger a <command>VACUUM</>.
- The default is 0.2.
+ The default is 0.4.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
This setting can be overridden for individual tables by entries in
@@ -3170,7 +3169,7 @@ SELECT * FROM parent WHERE key = 2400;
Specifies a fraction of the table size to add to
<varname>autovacuum_analyze_threshold</varname>
when deciding whether to trigger an <command>ANALYZE</>.
- The default is 0.1.
+ The default is 0.2.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
This setting can be overridden for individual tables by entries in
diff --git a/doc/src/sgml/maintenance.sgml b/doc/src/sgml/maintenance.sgml
index 9eaa4ad6da0..3a33286d3d7 100644
--- a/doc/src/sgml/maintenance.sgml
+++ b/doc/src/sgml/maintenance.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.60 2006/08/28 13:37:18 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.61 2006/08/29 11:37:47 petere Exp $ -->
<chapter id="maintenance">
<title>Routine Database Maintenance Tasks</title>
@@ -447,14 +447,14 @@ HINT: Stop the postmaster and use a standalone backend to VACUUM in "mydb".
</sect2>
<sect2 id="autovacuum">
- <title id="autovacuum-title">The autovacuum daemon</title>
+ <title id="autovacuum-title">The auto-vacuum daemon</title>
<indexterm>
<primary>autovacuum</primary>
<secondary>general information</secondary>
</indexterm>
<para>
- There is a
+ Beginning in <productname>PostgreSQL </productname> 8.1, there is a
separate optional server process called the <firstterm>autovacuum
daemon</firstterm>, whose purpose is to automate the execution of
<command>VACUUM</command> and <command>ANALYZE </command> commands.
@@ -465,9 +465,7 @@ HINT: Stop the postmaster and use a standalone backend to VACUUM in "mydb".
linkend="guc-stats-start-collector"> and <xref
linkend="guc-stats-row-level"> are set to <literal>true</literal>. Also,
it's important to allow a slot for the autovacuum process when choosing
- the value of <xref linkend="guc-superuser-reserved-connections">. In
- the default configuration, autovacuuming is enabled and the related
- configuration parameters are appropriately set.
+ the value of <xref linkend="guc-superuser-reserved-connections">.
</para>
<para>
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index e6135bc8e75..48487fdc851 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.344 2006/08/28 13:37:18 petere Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.345 2006/08/29 11:37:47 petere Exp $
*
*--------------------------------------------------------------------
*/
@@ -707,7 +707,7 @@ static struct config_bool ConfigureNamesBool[] =
NULL
},
&pgstat_collect_tuplelevel,
- true, NULL, NULL
+ false, NULL, NULL
},
{
{"stats_block_level", PGC_SUSET, STATS_COLLECTOR,
@@ -744,7 +744,7 @@ static struct config_bool ConfigureNamesBool[] =
NULL
},
&autovacuum_start_daemon,
- true, NULL, NULL
+ false, NULL, NULL
},
{
@@ -1138,7 +1138,7 @@ static struct config_int ConfigureNamesInt[] =
NULL
},
&ReservedBackends,
- 3, 0, INT_MAX / 4, NULL, NULL
+ 2, 0, INT_MAX / 4, NULL, NULL
},
{
@@ -1563,7 +1563,7 @@ static struct config_int ConfigureNamesInt[] =
NULL
},
&autovacuum_vac_thresh,
- 500, 0, INT_MAX, NULL, NULL
+ 1000, 0, INT_MAX, NULL, NULL
},
{
{"autovacuum_analyze_threshold", PGC_SIGHUP, AUTOVACUUM,
@@ -1571,7 +1571,7 @@ static struct config_int ConfigureNamesInt[] =
NULL
},
&autovacuum_anl_thresh,
- 250, 0, INT_MAX, NULL, NULL
+ 500, 0, INT_MAX, NULL, NULL
},
{
@@ -1726,7 +1726,7 @@ static struct config_real ConfigureNamesReal[] =
NULL
},
&autovacuum_vac_scale,
- 0.2, 0.0, 100.0, NULL, NULL
+ 0.4, 0.0, 100.0, NULL, NULL
},
{
{"autovacuum_analyze_scale_factor", PGC_SIGHUP, AUTOVACUUM,
@@ -1734,7 +1734,7 @@ static struct config_real ConfigureNamesReal[] =
NULL
},
&autovacuum_anl_scale,
- 0.1, 0.0, 100.0, NULL, NULL
+ 0.2, 0.0, 100.0, NULL, NULL
},
/* End-of-list marker */
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 2793b1e70df..fcb81d71188 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -59,7 +59,7 @@
# Note: increasing max_connections costs ~400 bytes of shared memory per
# connection slot, plus lock space (see max_locks_per_transaction). You
# might also need to raise shared_buffers to support more connections.
-#superuser_reserved_connections = 3 # (change requires restart)
+#superuser_reserved_connections = 2 # (change requires restart)
#unix_socket_directory = '' # (change requires restart)
#unix_socket_group = '' # (change requires restart)
#unix_socket_permissions = 0777 # octal
@@ -345,7 +345,7 @@
#stats_start_collector = on # needed for block or row stats
# (change requires restart)
#stats_block_level = off
-#stats_row_level = on
+#stats_row_level = off
#stats_reset_on_server_start = off # (change requires restart)
@@ -361,15 +361,15 @@
# AUTOVACUUM PARAMETERS
#---------------------------------------------------------------------------
-#autovacuum = on # enable autovacuum subprocess?
+#autovacuum = off # enable autovacuum subprocess?
#autovacuum_naptime = 60 # time between autovacuum runs, in secs
-#autovacuum_vacuum_threshold = 500 # min # of tuple updates before
+#autovacuum_vacuum_threshold = 1000 # min # of tuple updates before
# vacuum
-#autovacuum_analyze_threshold = 250 # min # of tuple updates before
+#autovacuum_analyze_threshold = 500 # min # of tuple updates before
# analyze
-#autovacuum_vacuum_scale_factor = 0.2 # fraction of rel size before
+#autovacuum_vacuum_scale_factor = 0.4 # fraction of rel size before
# vacuum
-#autovacuum_analyze_scale_factor = 0.1 # fraction of rel size before
+#autovacuum_analyze_scale_factor = 0.2 # fraction of rel size before
# analyze
#autovacuum_vacuum_cost_delay = -1 # default vacuum cost delay for
# autovac, -1 means use
--
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