Memory system and method of controlling nonvolatile memory

A memory system comprising:

• a nonvolatile memory including a plurality of dies;
• a controller configured to control the plurality of dies;
• and
• a first queue, a second queue and a command buffer provided for each of the plurality of dies, the first queue being a queue for storing a single read command associated with a read request from a host, or a leading read command of a plurality of read commands associated with a read request from the host, the second queue being a queue for storing any subsequent read command of the plurality of read commands, and the command buffer being a buffer for storing a read command to be executed that is fetched from a queue selected from the first queue and the second queue, wherein
• the controller is configured to:
• in response to the read command to be executed being stored in the command buffer corresponding to a first die of the plurality of dies, determine whether or not a next read command subsequent to the read command to be executed needs to be issued, based on whether or not the read command to be executed is any other read command except for the single read command and a last read command of the plurality of read commands;
• and
• in response to determining that the next read command needs to be issued:
• refer to a logical-to-physical address translation table and identify a second die in which second data subsequent to first data requested to be read by the read command to be executed is stored, and a length of the second data stored in the second die;
• generate a read command to read the second data;
• and
• execute a process of transmitting the read command to be executed to the first die, and a process of storing the generated read command in the second queue corresponding to the second die.