<samba:parameter name="oplocks" context="S" type="boolean" xmlns:samba="http://www.samba.org/samba/DTD/samba-doc"> <description> <para>This boolean option tells <command moreinfo="none">smbd</command> whether to issue oplocks (opportunistic locks) to file open requests on this share. The oplock code can dramatically (approx. 30% or more) improve the speed of access to files on Samba servers. It allows the clients to aggressively cache files locally and you may want to disable this option for unreliable network environments (it is turned on by default in Windows NT Servers). For more information see the file <filename moreinfo="none">Speed.txt</filename> in the Samba <filename moreinfo="none">docs/</filename> directory.</para> <para>Oplocks may be selectively turned off on certain files with a share. See the <link linkend="VETOOPLOCKFILES"><parameter moreinfo="none"> veto oplock files</parameter></link> parameter. On some systems oplocks are recognized by the underlying operating system. This allows data synchronization between all access to oplocked files, whether it be via Samba or NFS or a local UNIX process. See the <parameter moreinfo="none">kernel oplocks</parameter> parameter for details.</para> </description> <related>kernel oplocks</related> <related>level2 oplocks</related> <value type="default">yes</value> </samba:parameter>