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Mention Linux syslog will sync lines to disk, and describe how to

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disable it.
This commit is contained in:
Bruce Momjian 2004-03-15 14:15:45 +00:00
parent e8c3205037
commit 10afaf472a
2 changed files with 12 additions and 6 deletions
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doc/TODO
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TODO list for PostgreSQL TODO list for PostgreSQL
======================== ========================
Last updated: Sat Mar 13 18:17:39 EST 2004 Last updated: Mon Mar 15 09:06:53 EST 2004
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)

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doc/src/sgml/maintenance.sgml
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<!-- <!--
$PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.30 2003/12/14 00:10:32 neilc Exp $ $PostgreSQL: pgsql/doc/src/sgml/maintenance.sgml,v 1.31 2004/03/15 14:15:45 momjian Exp $
--> -->
<chapter id="maintenance"> <chapter id="maintenance">
@ -464,13 +464,19 @@ VACUUM
rotation, the <application>logrotate</application> program can be rotation, the <application>logrotate</application> program can be
configured to work with log files from configured to work with log files from
<application>syslog</application>. <application>syslog</application>.
</para> </para>
<para> <para>
On many systems, however, <application>syslog</> is not very reliable, particularly On many systems, however, <application>syslog</> is not very reliable,
with large log messages; it may truncate or drop messages just when particularly with large log messages; it may truncate or drop messages
you need them the most. You may find it more useful to pipe the just when you need them the most. Also, on <productname>linux</>,
<appication>syslog</> will sync each message to disk, yielding poor
performance. Use a <literal>-</> at the start of the file name
in the <application>syslog</> config file to disable this behavior.
</para>
<para>
You may find it more useful to pipe the
<systemitem>stderr</> of the <command>postmaster</> to some type of <systemitem>stderr</> of the <command>postmaster</> to some type of
log rotation program. If you start the server with log rotation program. If you start the server with
<command>pg_ctl</>, then the <systemitem>stderr</> of the <command>postmaster</command> <command>pg_ctl</>, then the <systemitem>stderr</> of the <command>postmaster</command>