database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-31 22:04:40 +03:00
Code Activity

Improve logging of checkpoints. Patch by Greg Smith, worked over

Browse Source 
by Heikki and a little bit by me.
This commit is contained in:
Tom Lane
2007-06-30 19:12:02 +00:00
parent 2910ccefb4
commit 9fc25c0511
7 changed files with 246 additions and 111 deletions
Download Patch File Download Diff File Expand all files Collapse all files

109
doc/src/sgml/config.sgml
View File

@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.129 2007/06/28 00:02:37 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.130 2007/06/30 19:12:01 tgl Exp $ -->
<chapter Id="runtime-config">
<title>Server Configuration</title>
@ -2660,6 +2660,23 @@ SELECT * FROM parent WHERE key = 2400;
</listitem>
</varlistentry>
<varlistentry id="guc-log-checkpoints" xreflabel="log_checkpoints">
<term><varname>log_checkpoints</varname> (<type>boolean</type>)</term>
<indexterm>
<primary><varname>log_checkpoints</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
Causes checkpoints to be logged in the server log. Some
statistics about each checkpoint are included in the log messages,
including the number of buffers written and the time spent writing
them.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line. The default is off.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-log-connections" xreflabel="log_connections">
<term><varname>log_connections</varname> (<type>boolean</type>)</term>
<indexterm>
@ -2667,15 +2684,20 @@ SELECT * FROM parent WHERE key = 2400;
</indexterm>
<listitem>
<para>
This outputs a line to the server log detailing each successful
connection. This is off by default, although it is probably very
useful. Some client programs, like <application>psql</>, attempt
to connect twice while determining if a password is required, so
duplicate <quote>connection received</> messages do not
necessarily indicate a problem.
Causes each attempted connection to the server to be logged,
as well as successful completion of client authentication.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
file or on the server command line. The default is off.
</para>
<note>
<para>
Some client programs, like <application>psql</>, attempt
to connect twice while determining if a password is required, so
duplicate <quote>connection received</> messages do not
necessarily indicate a problem.
</para>
</note>
</listitem>
</varlistentry>
@ -2729,6 +2751,23 @@ SELECT * FROM parent WHERE key = 2400;
</note>
</listitem>
</varlistentry>
<varlistentry id="guc-log-hostname" xreflabel="log_hostname">
<term><varname>log_hostname</varname> (<type>boolean</type>)</term>
<indexterm>
<primary><varname>log_hostname</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
By default, connection log messages only show the IP address of the
connecting host. Turning on this parameter causes logging of the
host name as well. Note that depending on your host name resolution
setup this might impose a non-negligible performance penalty.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-log-line-prefix" xreflabel="log_line_prefix">
<term><varname>log_line_prefix</varname> (<type>string</type>)</term>
@ -2860,6 +2899,21 @@ SELECT * FROM parent WHERE key = 2400;
</listitem>
</varlistentry>
<varlistentry id="guc-log-lock-waits" xreflabel="log_lock_waits">
<term><varname>log_lock_waits</varname> (<type>boolean</type>)</term>
<indexterm>
<primary><varname>log_lock_waits</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
Controls whether a log message is produced when a session waits
longer than <xref linkend="guc-deadlock-timeout"> to acquire a
lock. This is useful in determining if lock waits are causing
poor performance. The default is <literal>off</>.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-log-statement" xreflabel="log_statement">
<term><varname>log_statement</varname> (<type>string</type>)</term>
<indexterm>
@ -2904,38 +2958,6 @@ SELECT * FROM parent WHERE key = 2400;
</listitem>
</varlistentry>
<varlistentry id="guc-log-hostname" xreflabel="log_hostname">
<term><varname>log_hostname</varname> (<type>boolean</type>)</term>
<indexterm>
<primary><varname>log_hostname</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
By default, connection log messages only show the IP address of the
connecting host. Turning on this parameter causes logging of the
host name as well. Note that depending on your host name resolution
setup this might impose a non-negligible performance penalty.
This parameter can only be set in the <filename>postgresql.conf</>
file or on the server command line.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-log-lock-waits" xreflabel="log_lock_waits">
<term><varname>log_lock_waits</varname> (<type>boolean</type>)</term>
<indexterm>
<primary><varname>log_lock_waits</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
Controls whether a log message is produced when a session waits
longer than <xref linkend="guc-deadlock-timeout"> to acquire a
lock. This is useful in determining if lock waits are causing
poor performance. The default is <literal>off</>.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-log-temp-files" xreflabel="log_temp_files">
<term><varname>log_temp_files</varname> (<type>integer</type>)</term>
<indexterm>
@ -2944,11 +2966,12 @@ SELECT * FROM parent WHERE key = 2400;
<listitem>
<para>
Controls whether temporary files are logged when deleted.
Temporary files can be
created for sorts, hashes, and temporary query results.
A value of zero logs all temporary files, and positive
values log only files whose size is equal or greater than
the specified number of kilobytes. Temporary files can be
created for sorts, hashes, and temporary results. The
default is <literal>-1</> (off).
the specified number of kilobytes. The
default is <literal>-1</>, which disables this logging.
</para>
</listitem>
</varlistentry>