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Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 2166b99fc4e..915296310ce 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -5871,6 +5871,32 @@ local0.* /var/log/postgresql </listitem> </varlistentry> + <varlistentry id="guc-log-transaction-sample-rate" xreflabel="log_transaction_sample_rate"> + <term><varname>log_transaction_sample_rate</varname> (<type>real</type>) + <indexterm> + <primary><varname>log_transaction_sample_rate</varname> configuration parameter</primary> + </indexterm> + </term> + <listitem> + <para> + Set the fraction of transactions whose statements are all logged, + in addition to statements logged for other reasons. It applies to + each new transaction regardless of its statements' durations. + The default is <literal>0</literal>, meaning not to log statements + from any additional transaction. Setting this to <literal>1</literal> + logs all statements for all transactions. + <varname>log_transaction_sample_rate</varname> is helpful to track a + sample of transaction. + </para> + <note> + <para> + Like all statement-logging options, this option can add significant + overhead. + </para> + </note> + </listitem> + </varlistentry> + </variablelist> <para> |