Manual:$wgUseTurckShm

From Linux Web Expert

<translate> Memcached settings</translate>: $wgUseTurckShm
Use Turck MMCache shared memory.
<translate> Introduced in version:</translate>1.4.0 (r4882)
<translate> Removed in version:</translate>1.5.0
<translate> Allowed values:</translate>(boolean)
<translate> Default value:</translate>false

Details

Use Turck MMCache shared memory.

You can use this for persistent caching where your wiki runs on a single server. Enabled by default if Turck is installed. Mutually exclusive with memcached, memcached is used if both are specified.