ERS">autovacuum_max_workers</a> times this memory
        may be allocated, so be careful not to set the default value
        too high.  It may be useful to control for this by separately
        setting <a class="xref" href="runtime-config-resource.html#GUC-AUTOVACUUM-WORK-MEM">autovacuum_work_mem</a>.
       </p><p>
        Note that for the collection of dead tuple identifiers,
        <code class="command">VACUUM</code> is only able to utilize up to a maximum of
        <code class="literal">1GB</code>