Method, apparatus, device and storage medium for processing access request

An apparatus for processing an access request, comprising:

• at least one processor;
• and
• a memory storing instructions, wherein the instructions when executed by the at least one processor, cause the at least one processor to perform operations, the operations comprising:
• acquiring a plurality of to-be-distributed access requests for a storage device, the access requests at least comprising a group of read requests and a group of write requests;
• a read request distribution comprising:
• distributing read requests of the group of read requests to a drive device of the storage device without distributing a write request of the group of write requests, until a number of distributed read requests reaches a total number of read requests of the group of read requests or a first threshold number, the drive device being configured to execute the distributed requests on the storage device;
• and
• a write request distribution comprising:
• distributing at least one write request of the group of write requests to the drive device, wherein the read request distribution or the write request distribution comprises:
• selecting an undistributed target request from a target group of requests, wherein the target group of requests is the group of read requests or the group of the write requests, and the target request has a minimum offset for a physical address in the group of target requests;
• and
• distributing the selected target request to the drive device.

A non-transitory computer readable storage medium, storing a computer program thereon, wherein the program, when executed by a processor, causes the processor to perform operations, the operations comprising:

• acquiring a plurality of to-be-distributed access requests for a storage device, the access requests at least comprising a group of read requests and a group of write requests;
• a read request distribution comprising:
• distributing read requests of the group of read requests to a drive device of the storage device without distributing a write request of the group of write requests, until a number of distributed read requests reaches a total number of read requests of the group of read requests or a first threshold number, the drive device being configured to execute the distributed requests on the storage device;
• and
• a write request distribution comprising:
• distributing at least one write request of the group of write requests to the drive device, wherein the read request distribution or the write request distribution comprises:
• selecting an undistributed target request from a target group of requests, wherein the target group of requests is the group of read requests or the group of the write requests, and the target request has a minimum offset for a physical address in the group of target requests;
• and
• distributing the selected target request to the drive device.