Swapping

Swapping is the primary function used by SRM to exercise control over distribution of resources and system throughput. Using system status information that is periodically monitored, SRM determines which address spaces should have access to system resources.

In addition to the swapping controls described in the following text, SRM also provides an optional swap-in delay to limit the response time of TSO/E transactions.

There are several reasons for swapping. Some swaps are used for control of domains and the competition for resources between individual address spaces within a domain, while others provide control over system-wide performance and help increase the throughput.