diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 9e9c02cde83..2988865b116 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -2625,6 +2625,24 @@ include_dir 'conf.d' </listitem> </varlistentry> + <varlistentry id="guc-io-max-combine-limit" xreflabel="io_max_combine_limit"> + <term><varname>io_max_combine_limit</varname> (<type>integer</type>) + <indexterm> + <primary><varname>io_max_combine_limit</varname> configuration parameter</primary> + </indexterm> + </term> + <listitem> + <para> + Controls the largest I/O size in operations that combine I/O, and silently + limits the user-settable parameter <varname>io_combine_limit</varname>. + This parameter can only be set in + the <filename>postgresql.conf</filename> file or on the server + command line. + The default is 128kB. + </para> + </listitem> + </varlistentry> + <varlistentry id="guc-io-combine-limit" xreflabel="io_combine_limit"> <term><varname>io_combine_limit</varname> (<type>integer</type>) <indexterm> @@ -2633,7 +2651,10 @@ include_dir 'conf.d' </term> <listitem> <para> - Controls the largest I/O size in operations that combine I/O. + Controls the largest I/O size in operations that combine I/O. If set + higher than the <varname>io_max_combine_limit</varname> parameter, the + lower value will silently be used instead, so both may need to be raised + to increase the I/O size. The default is 128kB. </para> </listitem> |