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doc: Add more documentation about wal_retrieve_retry_interval 

from Michael Paquier
This commit is contained in:
Peter Eisentraut 2015-11-23 09:13:44 -05:00
parent 00cdd83521
commit 2ef7a985fb
1 changed files with 11 additions and 0 deletions
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doc/src/sgml/config.sgml
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@ -3054,6 +3054,17 @@ include_dir 'conf.d'
<filename>postgresql.conf</> file or on the server command line.
The default value is 5 seconds. Units are milliseconds if not specified.
</para>
<para>
This parameter is useful in configurations where a node in recovery
needs to control the amount of time to wait for new WAL data to be
available. For example, in archive recovery, it is possible to
make the recovery more responsive in the detection of a new WAL
log file by reducing the value of this parameter. On a system with
low WAL activity, increasing it reduces the amount of requests necessary
to access WAL archives, something useful for example in cloud
environments where the amount of times an infrastructure is accessed
is taken into account.
</para>
</listitem>
</varlistentry>