o zero disables
         background writing.  (Note that checkpoints, which are managed by
         a separate, dedicated auxiliary process, are unaffected.)
         The default value is 100 buffers.
         This parameter can only be set in the <code class="filename">postgresql.conf</code>
         file or on the server command line.
        </p></dd><dt id="GUC-BGWRITER-LRU-MULTIPLIER"><span class="term"><code class="varname">bgwriter_lru_multiplier</code> (<code class="type">floating point</code>)
    