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Diffstat (limited to 'doc/src/sgml/config.sgml')
| -rw-r--r-- | doc/src/sgml/config.sgml | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index dbccaa7569..03667754b8 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.243 2010/01/06 02:41:37 momjian Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.244 2010/01/15 09:18:58 heikki Exp $ --> <chapter Id="runtime-config"> <title>Server Configuration</title> @@ -1746,6 +1746,51 @@ archive_command = 'copy "%p" "C:\\server\\archivedir\\%f"' # Windows </variablelist> </sect2> + <sect2 id="runtime-config-replication"> + <title>Streaming Replication</title> + + <para> + These settings control the behavior of the built-in + <firstterm>streaming replication</> feature. + </para> + + <variablelist> + <varlistentry id="guc-max-wal-senders" xreflabel="max_wal_senders"> + <term><varname>max_wal_senders</varname> (<type>integer</type>)</term> + <indexterm> + <primary><varname>max_wal_senders</> configuration parameter</primary> + </indexterm> + <listitem> + <para> + Specifies the maximum number of concurrent connections from standby + servers (i.e., the maximum number of simultaneously running WAL sender + processes). The default is zero. This parameter can only be set at + server start. + </para> + </listitem> + </varlistentry> + <varlistentry id="guc-wal-sender-delay" xreflabel="wal_sender_delay"> + <term><varname>wal_sender_delay</varname> (<type>integer</type>)</term> + <indexterm> + <primary><varname>wal_sender_delay</> configuration parameter</primary> + </indexterm> + <listitem> + <para> + Specifies the delay between activity rounds for the WAL sender. + In each round the WAL sender sends any WAL accumulated since last + round to the standby server. It then sleeps for + <varname>wal_sender_delay</> milliseconds, and repeats. The default + value is 200 milliseconds (<literal>200ms</>). + Note that on many systems, the effective resolution of sleep delays is + 10 milliseconds; setting <varname>wal_sender_delay</> to a value that + is not a multiple of 10 might have the same results as setting it to + the next higher multiple of 10. This parameter can only be set in the + <filename>postgresql.conf</> file or on the server command line. + </para> + </listitem> + </varlistentry> + </variablelist> + </sect2> <sect2 id="runtime-config-standby"> <title>Standby Servers</title> |