Bandwidth averaging in a stochastic system

A data storage device, comprising:

• a memory device;
• and
• a controller coupled to the memory device, wherein the controller is configured to:
• receive an average bandwidth accuracy requirement;
• determine a number of credits to issue to meet the average bandwidth accuracy requirement:
• start a timer;
• determine that there is any data to send;
• determine whether there are sufficient credits available to send the data;
• and
• either:
• send the data if the determination is that there are sufficient credits;
• or
• wait for sufficient credits and then send the data, wherein the controller is configured to remove credit after sending the data, wherein the credit is removed from an oldest non zero credit counter.

A data storage device, comprising:

• a memory device;
• and
• a controller coupled to the memory device, wherein the controller is configured to:
• receive an average bandwidth accuracy requirement;
• determine a number of credits to issue to meet the average bandwidth accuracy requirement;
• start a timer;
• determine that there is any data to send;
• determine whether there are sufficient credits available to send the data;
• and
• either:
• send the data if the determination is that there are sufficient credits;
• or
• wait for sufficient credits and then send the data, wherein the waiting comprises waiting for the timer to expire, wherein the controller is configured to remove all credits from a credit counter when the timer has expired, wherein restart the time when the timer has expired, wherein the credit counter is an oldest credit counter of a plurality of credit counters.