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Add a trace_sort option to help with measuring resource usage of external

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sort operations.  Per recent discussion.  Simon Riggs and Tom Lane.
This commit is contained in:
Tom Lane
2005-10-03 22:55:56 +00:00
parent 12992ab37a
commit 53e47cdd79
4 changed files with 121 additions and 7 deletions
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17
doc/src/sgml/config.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.23 2005/09/24 23:25:31 neilc Exp $
$PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.24 2005/10/03 22:55:50 tgl Exp $
-->
<chapter Id="runtime-config">
<title>Run-time Configuration</title>
@ -4071,6 +4071,21 @@ plruby.use_strict = true # generates error: unknown class name
</listitem>
</varlistentry>
<varlistentry id="guc-trace-sort" xreflabel="trace_sort">
<term><varname>trace_sort</varname> (<type>boolean</type>)</term>
<indexterm>
<primary><varname>trace_sort</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
If on, emit information about resource usage during sort operations.
This option is only available if the <symbol>TRACE_SORT</symbol> macro
was defined when <productname>PostgreSQL</productname> was compiled.
(However, <symbol>TRACE_SORT</symbol> is currently defined by default.)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>trace_locks</varname> (<type>boolean</type>)</term>
<term><varname>trace_lwlocks</varname> (<type>boolean</type>)</term>