Dynamically adjusting read data return sizes based on interconnect bus utilization

A method comprising:

• a computer system receiving one or more memory requests from one or more core devices via an interconnect bus, the one or more memory requests for accessing one or more memory devices via a memory interface bus;
• the computer system tracking utilization of the interconnect bus by tracking a selection of the one or more memory requests comprising one or more read request returns with fetched data from the one or more memory devices and-waiting for scheduling to return on the interconnect bus during a time window, by:
• monitoring, for each of the one or more memory requests received via the interconnect bus, whether the one or more memory requests includes a variable setting for the at least one read data size options;
• and
• responsive to detecting the at least one read request with the variable setting from among the selection of the one or more memory requests, tracking utilization of the interconnect bus by tracking the selection of the one or more memory requests with fetched data from the one or more memory devices and waiting for scheduling to return on the interconnect bus during the time window;
• and
• the computer system, responsive to detecting utilization of the interconnect bus during the time window reaches a memory utilization threshold, dynamically selecting a reduced read data size for a size of the fetched data to be returned with-at least one read request from among the selection of one or more memory requests, the reduced data size selected from among at least two read data size options for the at least one read request of a maximum read data size and the reduced read data size that is less than the maximum read data size.

A computer program product comprising one or more non-transitory computer-readable storage devices and program instructions, stored on at least one of the one or more storage devices, the stored program instructions comprising:

• program instructions to receive one or more memory requests from one or more core devices via an interconnect bus, the one or more memory requests for accessing one or more memory devices via a memory interface bus;
• program instructions to track utilization of the interconnect bus by tracking a selection of the one or more memory requests comprising one or more read request returns with fetched data from the one or more memory devices and-waiting for scheduling to return on the interconnect bus during a time window, by:
• monitoring, for each of the one or more memory requests received via the interconnect bus, whether the one or more memory requests includes a variable setting for the at least one read data size options;
• and
• responsive to detecting the at least one read request with the variable setting from among the selection of the one or more memory requests, tracking utilization of the interconnect bus by tracking the selection of the one or more memory requests with fetched data from the one or more memory devices and waiting for scheduling to return on the interconnect bus during the time window;
• and
• program instructions to, responsive to detecting utilization of the interconnect bus during the time window reaches a memory utilization threshold, dynamically select a reduced read data size for a size of the fetched data to be returned with at least one read request from among the selection of one or more memory requests, the reduced data size selected from among at least two read data size options for the at least one read request of a maximum read data size and the reduced read data size that is less than the maximum read data size.