Patent ID: 11947461
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. The system of claim 16, wherein the system is further configured to:
determine whether data responsive to the demand request or the prefetch request is in the data cache;
sending, in response to determining that data responsive to the demand request is in the cache, the data to a higher level cache in the cache memory or a load store unit in the processor;
terminating, in response to determining that data responsive to the prefetch request is in the data cache; the prefetch request and incrementing a hit count in the entry of the prefetch streaming filter for the prefetch stream corresponding to the prefetch request;
sending, in response to determining that data responsive to the demand request is not in the data cache, the demand request to a next level of memory in the memory subsystem; and
in response to determining that data responsive to the prefetch request is not in the data cache, setting the hit count to zero in the entry of the prefetch streaming filter for the prefetch stream corresponding to the prefetch request and sending the prefetch request to the next level of memory in the memory subsystem.