Credit-based scheduling of memory commands

A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to:

• receive a plurality of streams of memory requests, wherein each stream of memory requests is associated with a source;
• determine a bandwidth allocation for each of the plurality of streams of memory requests, wherein each bandwidth allocation represents a portion of a total bandwidth of a memory subsystem in relation to a memory component managed by the memory subsystem;
• assign a set of credits from a total set of credits managed by the memory subsystem to each stream of memory requests based on the bandwidth allocations for each stream of memory requests from the plurality of streams of memory requests;
• and
• determine a memory command from a memory command queue of the memory subsystem for issuance, wherein each memory command in the memory command queue is associated with a stream of memory requests of the plurality of streams of memory requests and the determining the memory command is based on the credits assigned to each stream of memory requests such that memory commands associated with a stream of memory requests with a higher number of assigned credits is given priority for issuance over memory commands associated with a stream of memory requests with a lower number of assigned credits.

A system comprising:

• a memory components;
• and
• a processing device, operatively coupled with the memory component, to:
• assign a set of credits from a total set of credits managed by the memory subsystem to each of a plurality of streams of memory requests based on bandwidth allocations for each stream of memory requests from the plurality of streams of memory requests, wherein each bandwidth allocation represents a portion of a total bandwidth of a memory subsystem in relation to a memory component managed by the memory subsystem;
• and
• determine a memory command from a memory command queue of the memory subsystem for issuance, wherein each memory command in the memory command queue is associated with a stream of memory requests of the plurality of streams of memory requests and the determining the memory command is based on the credits assigned to each stream of memory requests such that memory commands associated with a stream of memory requests with a higher number of assigned credits is given priority for issuance over memory commands associated with a stream of memory requests with a lower number of assigned credits.