ls the size of huge pages, when they are enabled with
        <a class="xref" href="runtime-config-resource.html#GUC-HUGE-PAGES">huge_pages</a>.
        The default is zero (<code class="literal">0</code>).
        When set to <code class="literal">0</code>, the default huge page size on the
        system will be used. This parameter can only be set at server start.
       </p><p>
        Some commonly available page sizes on modern 64 bit server architectures include:
        <code class="literal">2MB</co