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| -rw-r--r-- | doc/src/sgml/auto-explain.sgml | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/src/sgml/auto-explain.sgml b/doc/src/sgml/auto-explain.sgml index 8325f0371d1..03b2309da8f 100644 --- a/doc/src/sgml/auto-explain.sgml +++ b/doc/src/sgml/auto-explain.sgml @@ -141,6 +141,27 @@ LOAD 'auto_explain'; <varlistentry> <term> + <varname>auto_explain.log_timing</varname> (<type>boolean</type>) + </term> + <indexterm> + <primary><varname>auto_explain.log_timing</> configuration parameter</primary> + </indexterm> + <listitem> + <para> + <varname>auto_explain.log_timing</varname> causes <command>EXPLAIN + (ANALYZE, TIMING off)</> output, rather than just <command>EXPLAIN (ANALYZE)</> + output. The overhead of repeatedly reading the system clock can slow down the + query significantly on some systems, so it may be useful to set this + parameter to <literal>FALSE</literal> when only actual row counts, and not + exact times, are needed. + This parameter is only effective when <varname>auto_explain.log_analyze</varname> + is also enabled. It defaults to <literal>TRUE</literal>. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term> <varname>auto_explain.log_nested_statements</varname> (<type>boolean</type>) </term> <indexterm> |