Method, controller, and system for service flow control in object-based storage system

An object-based storage system, comprising:

• multiple storage devices;
• and
• a controller coupled to the multiple storage devices,
• wherein the controller is configured to:
• send a first object input/output (IO) request to a target storage device what is one of the multiple storage devices, when a quantity of pending object IO requests has not reach a processing quantity threshold, wherein the processing quantity threshold indicates a maximum quantity of object IO requests processed by the object-based storage system;
• receive a first response message from the target storage device in response to the first object IO request, wherein the first response message includes a processing result of the first object IO request;
• and
• adjust the processing quantity threshold based on one or more processing results that include the processing result of the first object IO request.

A non-transitory computer-readable storage medium storing program instructions for use by a controller that controls service flow in an object-based storage system, wherein the object-based storage system includes the controller and multiple storage devices coupled to the controller, and wherein the program instructions instruct the controller to perform a process that comprises:

• sending in the object-based storage system, a first object input/output (IO) request to a target storage device that is one of the multiple storage devices, when a quantity of pending object IO requests has not reach a processing quantity threshold, wherein the processing quantity threshold indicates a maximum quantity of object IO requests processed by the object-based storage system;
• receiving a first response message from the target storage device in response to the first object IO request, wherein the first response message includes a processing result of the first object IO request;
• and
• adjusting the processing quantity threshold based on one or more processing results that include the processing result of the first object IO request.