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Change default commit_delay to zero, update documentation.

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This commit is contained in:
Tom Lane
2001-02-18 04:50:43 +00:00
parent 33cc5d8a4d
commit 57e0847180
4 changed files with 24 additions and 16 deletions
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12
doc/src/sgml/wal.sgml
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@ -1,4 +1,4 @@
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/wal.sgml,v 1.1 2001/01/24 23:15:19 petere Exp $ -->
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/wal.sgml,v 1.2 2001/02/18 04:50:43 tgl Exp $ -->
<chapter id="wal">
<title>Write-Ahead Logging (<acronym>WAL</acronym>)</title>
@ -290,15 +290,15 @@
</para>
<para>
The <varname>COMMIT_DELAY</varname> parameter defines for how long
the backend will be forced to sleep after writing a commit record
to the log with <function>LogInsert</function> call but before
The <varname>COMMIT_DELAY</varname> parameter defines for how many
microseconds the backend will sleep after writing a commit
record to the log with <function>LogInsert</function> but before
performing a <function>LogFlush</function>. This delay allows other
backends to add their commit records to the log so as to have all
of them flushed with a single log sync. Unfortunately, this
mechanism is not fully implemented at release 7.1, so there is at
present no point in changing this parameter from its default value
of 5 microseconds.
present usually no benefit to be gained from increasing this parameter
above its default value of zero.
</para>
</sect1>
</chapter>