<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>