In order to invoke the favored execution, priority, reserved page
frames, and locked pages options you must have a virtual machine defined
with the appropriate command privilege classes.
virtual machine has the appropriate command classes. Additional
planning is needed to support the virtual=real option and virtual
machine assist as well as
are described in detail in the
Although the virtual=real option eliminates paging, its main function is
to bypass
machine occupying a virtual=real space contains a list of
The only exception is virtual page o.
as real page
area. In order for the virtual machine to perform input/output into
virtual page
on
of the virtual machine may issue a CP command to turn
off.
must not perform
generated so that they do not use this area for input/output. However,
violation of this restriction may cause damage to the entire
The size of the virtual=real area is specified during
generation. It must be large enough to contain the entire address space
of the largest virtual machine that you execute in the virtual=real
area.
area, it affects the performance of the other virtual machines.
the dynamic paging area.
by reloading
that is, unused pages of the area cannot be selected for release.
more users log on and use the released space. The reason for this is
that the number of pages allocated for
size. Therefore, the number of fixed free pages allocated for a system
with a virtual=real area may not be enough to accommodate the larger
number of users of the released space, and system overhead may increase
as