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shmem(5)							      shmem(5)

NAME
       shmem - enable or disable System V shared memory

DESCRIPTION
       The  tunable  is obsolete.  The System V IPC shared memory subsystem is
       always enabled.

       Shared memory is an efficient InterProcess Communications (IPC)	mecha‐
       nism.   One  process creates a shared memory segment and attaches it to
       its address space.  Any processes  looking  to  communicate  with  this
       process	through the shared memory segment, then attach the shared mem‐
       ory segment to  their  corresponding  address  spaces  as  well.	  Once
       attached,  a process can read from or write to the segment depending on
       the permissions specified while attaching it.

WARNINGS
       Installation of optional kernel software, from HP or other vendors, may
       cause  changes  to  tunable parameter values.  After installation, some
       tunable parameters may no longer be at the default or recommended  val‐
       ues.  For information about the effects of installation on tunable val‐
       ues, consult the documentation for the kernel software being installed.
       For  information	 about	optional  kernel  software  that  was  factory
       installed on your system, see at

AUTHOR
       was developed by HP.

SEE ALSO
       shmmax(5), shmmni(5), shmseg(5).

			   Tunable Kernel Parameters		      shmem(5)

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