Dynamic Command Scheduling for Storage System

A method for a storage system, comprising:

• receiving a command from a host system;
• based on a type of the received command, determining the received command as a high priority command or a low priority command, wherein determining the received command comprises:
• when the received command is a host read command or an error correction command, determining the received command as the high priority command and assigning the received command to a high priority queue;
• and
• when the received command is an internal write command, an internal erase command or an internal read command, determining the received command as the low priority command and assigning the received command to a low priority queue;
• and
• processing commands from the high priority queue and the low priority queue based on a scheduling ratio, wherein the scheduling ratio indicates a ratio between a number of one or more commands from the high priority queue to be processed and a number of one or more commands from the low priority queue to be processed.

A storage apparatus, comprising:

• means for receiving a command from a host system;
• means for, based on a type of the received command, determining the received command as a high priority command or a low priority command, wherein the means for determining the received command comprises:
• when the received command is a host read command or an error correction command, means for determining the received command as the high priority command and assigning the received command to a high priority queue;
• and
• when the received command is an internal write command, an internal erase command or an internal read command, means for determining the received command as the low priority command and assigning the received command to a low priority queue;
• and
• means for processing commands from the high priority queue and the low priority queue based on a scheduling ratio, wherein the scheduling ratio indicates a ratio between a number of one or more commands from the high priority queue to be processed and a number of one or more commands from the low priority queue to be processed.