samba-mirror/docs-xml/smbdotconf/tuning/usemmap.xml

<samba:parameter name="use mmap"
                 context="G"
				 type="boolean"
                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
<description>
    <para>This global parameter determines if the tdb internals of Samba can
    depend on mmap working correctly on the running system. Samba requires a coherent
    mmap/read-write system memory cache. Currently only HPUX does not have such a
    coherent cache, and so this parameter is set to <constant>no</constant> by
    default on HPUX. On all other systems this parameter should be left alone. This
    parameter is provided to help the Samba developers track down problems with
    the tdb internal code.
    </para>
</description>

<value type="default">yes</value>
</samba:parameter>