wal_receiver_status_interval

doc html

<p>
       Specifies the minimum frequency for the WAL receiver
       process on the standby to send information about replication progress
       to the primary or upstream standby, where it can be seen using the
       <a class="link" href="/docs/18/monitoring-stats.html#MONITORING-PG-STAT-REPLICATION-VIEW" title="27.2.4. pg_stat_replication">
<code class="structname">pg_stat_replication</code></a>
       view.  The standby will report
       the last write-ahead log location it has written, the last position it
       has flushed to disk, and the last position it has applied.
       This parameter's value is the maximum amount of time between reports.
       Updates are sent each time the write or flush positions change, or as
       often as specified by this parameter if set to a non-zero value.
       There are additional cases where updates are sent while ignoring this
       parameter; for example, when processing of the existing WAL completes
       or when <code class="varname">synchronous_commit</code> is set to
       <code class="literal">remote_apply</code>.
       Thus, the apply position may lag slightly behind the true position.
       If this value is specified without units, it is taken as seconds.
       The default value is 10 seconds. This parameter can only be set in
       the <code class="filename">postgresql.conf</code> file or on the server
       command line.
      </p>

documentation revision

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