Microchip Technology Inc.

Kwok Kong

Donia Sebastian

Ihab Jaser

Xin Guo

William Brent Wilson

Jack Wynne

Dan McLeran

An apparatus and method for scheduling memory requests including receiving a plurality of requests having a type and associating each request of the received plurality of requests with a corresponding target, which is associated with one channel of a plurality of channels. The method assigning a priority to each request, assigning a utilization cost to each request based on the request's target and request type, and queueing each request of the plurality of requests for scheduling. The method selecting a first request of the received plurality of requests to be scheduled based on its priority, scheduling the first request for processing at a time when the first request utilization cost is less than or equal to a current value of a dynamic utilization counter, and debiting the dynamic utilization counter by the first request utilization cost.

System and method for centralized management of workload and parallel service of prioritized requests

A system (e.g., NVMe controller) for managing access to a memory resource by multiple users may include memory storing function queue categorizations for function queues associated with each user, and circuitry to store and execute a multi-user arbitration algorithm that arbitrates access to the memory resource by the multiple users. The function queue categorizations assign a function category to each function queue associated with each user. The multi-user arbitration algorithm includes (a) selecting an intra-user winning function queue for each respective user by performing an intra-user function queue arbitration of the function queues associated with the respective user based on the function queue categorizations associated with the arbitrated function queues, (b) selecting an inter-user winning function queue by performing an inter-user function queue arbitration of the intra-user winning function queues selected for the multiple users, and (c) serving a function from the inter-user winning function queue to the memory resource.

System for managing access to a memory resource by multiple users

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Cupertino, CA, United States of America

Kwok Kong