System and method for I/O optimization in a multi-queued environment

摘要

A system and method for I/O optimization in a multi-queued environment are provided. In one embodiment, a host is provided that sorts commands into a plurality of queues, wherein a command is sorted based on its data characteristic. The host receives a read request from a storage module for commands in the plurality of queues and provides the storage module with the requested commands. In another embodiment, a storage module is provided that processes commands from a host based on the data characteristic of the queue that stored the command on the host. In another embodiment, a storage module sorts command completions into a plurality of queues, wherein a command completion is sorted based on its resulting status code.

主权项

1. A host comprising:
a memory storing a plurality of commands to be performed in a storage module and a plurality of queues, wherein each command has a respective data characteristic, and wherein each queue is dedicated to commands of a certain data characteristic, whereby because each queue is dedicated to commands of a certain data characteristic, the plurality of queues are dedicated to commands of different data characteristics; and a controller in communication with the memory and configured to:
sort a plurality of commands into the plurality of queues based on the commands' data characteristics, wherein each command is sorted into a queue that is dedicated to the command's data characteristic irrespective of which thread in the host issued the command;receive a read request from the storage module for commands in the plurality of queues; andprovide the storage module with the requested commands.