View source for PSWAPM

'''PSWAPM''' is a [[Privileges|privilege]] that allows a process to control whether it can be [[Swapping|swapped]] out of the balance set by executing the [[$SETSWM|Set Process Swap Mode ($SETSWM)]] system service. A process must have this privilege to lock itself in the balance set (to disable swapping) or to unlock itself from the balance set (to enable swapping).

With this privilege, a process can create a process that is locked in the balance set (swap mode is disabled) by using an optional argument to the [[$CREPRC|Create Process ($CREPRC)]] system service or, when the DCL command [[RUN]] is used to create a process, by using the /NOSWAPPING qualifier of the RUN command. Furthermore, a process can lock a page or range of pages in physical memory using the [[$LCKPAG|Lock Pages in Memory ($LCKPAG)]] system service.

This privilege should only be granted to users who need to lock a process in memory for performance reasons. Typically, this will be a real-time process. If unqualified processes have the unrestricted ability to lock processes in the balance set, physical memory can be held unnecessarily and thereby degrade system performance. 

[[Category:System Privileges]]