Tunable Kernel Parameters
NAME [Toc] [Back]
shmem - enable or disable System V shared memory
DESCRIPTION [Toc] [Back]
The shmem tunable is obsolete.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 [Toc] [Back]
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
AUTHOR [Toc] [Back]
shmem was developed by HP.
SEE ALSO [Toc] [Back]
shmmax(5), shmmni(5), shmseg(5).
Hewlett-Packard Company - 1 - HP-UX 11i Version 2: Sep 2004 [ Back ]