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- Unilateral swap in: If the number of a
domain's address spaces that are in the multiprogramming set (MPS)
is less than the number SRM has set for the swap-in target, SRM swaps
in additional address spaces for that domain, if possible.
- Unilateral swap out: If the number of
a domain's address spaces that are in the multiprogramming set is
greater than the number SRM has set for the swap-out target, SRM swaps
out address spaces from that domain.
- Exchange swap: All address spaces of a
domain compete with one another for system resources. When an address
space in the multiprogramming set has exceeded its allotted portion of resources, relative to an
address space of the same domain waiting to be swapped in, SRM performs
an exchange swap. That is, the address space in the multiprogramming
set is swapped out and the other address space is swapped in. (The
multiprogramming set consists of those address spaces that are in
central storage and are eligible for access to the processor.) This
competition between address spaces is described in detail in Section 2: Basic SRM parameter concepts.
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