NAME
shmem — enable or disable System V shared memory
DESCRIPTION
The
shmem
tunable is obsolete. The System V IPC shared memory subsystem is always
enabled.
Shared memory is an efficient InterProcess Communications (IPC) mechanism.
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 memory 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 values. For information about the effects of
installation on tunable values, consult the documentation
for the kernel software being installed.
For information about optional kernel software that was
factory installed on your system, see
HP-UX Release Notes
at
http://docs.hp.com.
AUTHOR
shmem
was developed by HP.
