Memory management system, method and computer program product

A method comprising:

• setting a memory databus utilization system threshold for a data processing system;
• determining a memory databus utilization processor threshold for each of a plurality of processors of the data processing system to maintain a memory databus utilization for the system at or below the system threshold;
• transmitting to a plurality of memory controllers the memory databus utilization processor thresholds for each respective processor controlled by the memory controller;
• receiving from the memory controllers memory databus utilization data corresponding to the respective processors;
• and
• dynamically adjusting the memory databus utilization processor thresholds for the processors to reallocate unused memory databus utilization bandwidth from at least one of the processors to another one of the processors while maintaining memory databus utilization of the system at or below the system threshold.

A system comprising:

• a memory management module configured to identify a memory databus utilization system threshold set for the system, the memory management module further configured to set a memory databus utilization processor threshold for each processor of the system based on the system threshold;
• a plurality of memory controllers each configured to maintain memory databus utilization by a corresponding processor managed by a respective memory controller at or below a respective memory databus utilization processor threshold to maintain memory databus utilization of the system at or below the system threshold;
• and
• a service processor configured to receive memory databus utilization data from the memory controllers and programmed to, in response to determining that memory databus utilization for at least one of the processors is below its threshold, reallocate at least a portion of unused databus utilization from the at least one processor to at least one of the other processors.