Frame choosing during storage constraint condition

A computer program product for implementing a method of frame choosing in a computing system during a storage constraint condition, the computer program product comprising:

• a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a signal, the program instructions readable by a processor to cause the processor to perform a method comprising:
• calculating a use-grouped-threshold;
• comparing a number of available grouped frames to the calculated use-grouped-threshold;
• returning a decision to use a grouped frame in an event that the number of the available grouped frames exceeds the calculated use-grouped-threshold;
• and
• returning a decision to use an above-the-bar frame in an event that the number of the available grouped frames is less than or equal to the calculated use-grouped-threshold.

A computing system configured to execute a frame choosing method during a storage constraint condition, the computing system comprising:

• a processor;
• and
• central and auxiliary storage;
• the processor being configured to calculate a use-grouped-threshold, compare a number of available grouped frames to the calculated use-grouped-threshold, return a decision to use a grouped frame in an event that the number of the available grouped frames exceeds the calculated use-grouped-threshold and return a decision to use an above-the-bar frame in an event that the number of the available grouped frames is less than or equal to the calculated use-grouped-threshold.