unlockable_mem.5 (2010 09)

u
unlockable_mem(5) unlockable_mem(5)
OBSOLETE OBSOLETE
(Tunable Kernel Parameters)
NAME
unlockable_mem - OBSOLETE kernel tunable parameter
DESCRIPTION
The
unlockable_mem
tunable is obsolete and has been removed.
Memory locking allows the privileged user to specify which pages need to remain in memory, and
unaffected by the swap process. This feature allows you to ensure that memory access times are
unaffected by delays introduced by memory paging and swapping. For example, locking is a tool provided
to privileged users on a system that is short on physical memory. Instead of having these privileged
processes swap like the rest of the processes, they can lock portions of their address space. Once the
pages are locked in for the privileged processes, they will no longer have to worry about memory conten-
tion. The unprivileged processes however, will have to compete for memory.
unlockable_mem
provides you with a limiting factor on this privileged behavior, by setting the amount
of memory which cannot be locked by user processes.
WARNINGS
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parame-
ter 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://www.hp.com/go/hpux-core-docs
.
AUTHOR
unlockable_mem was developed by HP.
SEE ALSO
kctune(1M).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1