From 8f6e8e8fed372a592f645d8900b6f456db82cc59 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Fri, 1 Jul 2005 13:29:25 +0000
Subject: [PATCH] Clarify documentation about log_min_duration_statement.
---
doc/src/sgml/runtime.sgml | 23 ++++++++++---------
src/backend/utils/misc/postgresql.conf.sample | 3 ++-
2 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index c0b3e65ba78..42398529866 100644
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -1,5 +1,5 @@
<!--
-$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.332 2005/06/26 19:16:04 tgl Exp $
+$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.333 2005/07/01 13:29:23 momjian Exp $
-->
<chapter Id="runtime">
@@ -2628,16 +2628,17 @@ archive_command = 'copy "%p" /mnt/server/archivedir/"%f"' # Windows
</indexterm>
<listitem>
<para>
- Sets a minimum statement execution time (in milliseconds)
- that causes a statement to be logged. All SQL statements
- that run for the time specified or longer will be logged with
- their duration. Setting this to zero will print
- all queries and their durations. Minus-one (the default)
- disables the feature. For example, if you set it to
- <literal>250</literal> then all SQL statements that run 250ms
- or longer will be logged. Enabling this option can be
- useful in tracking down unoptimized queries in your applications.
- Only superusers can change this setting.
+ Logs the statement and its duration on a single log line if its
+ duration is greater than or equal to the specified number of
+ milliseconds. Setting this to zero will print all statements
+ and their durations. Minus-one (the default) disables the
+ feature. For example, if you set it to <literal>250</literal>
+ then all SQL statements that run 250ms or longer will be
+ logged. Enabling this option can be useful in tracking down
+ unoptimized queries in your applications. This setting is
+ independent of <varname>log_statement</varname> and
+ <varname>log_duration</varname>. Only superusers can change
+ this setting.
</para>
</listitem>
</varlistentry>
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 72f447c76b4..ac1cc4875a8 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -227,7 +227,8 @@
# debug5, debug4, debug3, debug2, debug1,
# info, notice, warning, error, panic(off)
-#log_min_duration_statement = -1 # -1 is disabled, in milliseconds.
+#log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements
+ # and their durations, in milliseconds.
#silent_mode = false # DO NOT USE without syslog or redirect_stderr
--
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