Managing a prefetch queue based on priority indications of prefetch requests

A computer system for managing prefetch queues, said computer system comprising:

• a memory;
• and
• a processor in communication with the memory, wherein the computer system is configured to perform a method, said method comprising:
• obtaining a prefetch request based on executing a prefetch instruction included within a program, the prefetch request having a priority assigned thereto;
• determining, based on obtaining the prefetch request, whether the prefetch request may be placed on a prefetch queue, the determining comprising:
• determining whether the prefetch queue is full;
• checking, based on determining the prefetch queue is full, whether the priority of the prefetch request is considered a high priority;
• determining, based on the checking indicating the priority of the prefetch request is considered a high priority, whether another prefetch request on the prefetch queue may be removed;
• removing the other prefetch request from the prefetch queue, based on determining the other prefetch request may be removed;
• and
• adding the prefetch request to the prefetch queue, based on removing the other prefetch request.

A computer-implemented method of managing prefetch queues, said computer-implemented method comprising:

• obtaining, by a processor, a prefetch request based on executing a prefetch instruction included within a program, the prefetch request having a priority assigned thereto;
• determining, based on obtaining the prefetch request, whether the prefetch request may be placed on a prefetch queue, the determining comprising:
• determining whether the prefetch queue is full;
• checking, based on determining the prefetch queue is full, whether the priority of the prefetch request is considered a high priority;
• determining, based on the checking indicating the priority of the prefetch request is considered a high priority, whether another prefetch request on the prefetch queue may be removed;
• removing the other prefetch request from the prefetch queue, based on determining the other prefetch request may be removed;
• and
• adding the prefetch request to the prefetch queue, based on removing the other prefetch request.