the
      background writer might write it several times as it is dirtied
      in the same interval.  The parameters discussed in this subsection
      can be used to tune the behavior for local needs.
     </p><div class="variablelist"><dl class="variablelist"><dt id="GUC-BGWRITER-DELAY"><span class="term"><code class="varname">bgwriter_delay</code> (<code class="type">integer</code>)
       <a id="id-1.6.7.7.6.3.1.1.3" class="indexterm"></a>
       </span> <a href="#GUC-BGWRITER-DELAY" class="id_link">#<