Method for improving performance in a computer storage system by regulating resource requests from clients
AssigneeInternational Business Machines Corporation
InventorsDavid Darden Chambliss, Divyesh Jadav
Life of this patent
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Abstract
A method and system for optimizing the performance of a storage system by classifying each client request for resources based on operational limits of the resources and controlling when to submit the request for processing based on service class. The operational limits are determined from performance characteristics of the system resources and from the level of performance guaranteed to each client. By regulating the clients' usage of resources using the resource operational limits, total system performance requirements and guarantees can be achieved.
Claims24
In a storage system having one or more resources, one or more clients, a request classifier and a flow controller, a method for optimizing performance comprising steps of:
- receiving service requests from clients;
- transmitting the service requests to a gateway for recording timestamps on the service requests:
- sending the service requests from the gateway to the request classifier:
- associating, by the request classifier, each service request with a service class, said service class corresponding to a set of operational limits for limiting each service request's use of the storage system's resources, wherein the set of operational limits are determined from performance characters of the system resources and from level of performance guaranteed to each client;
- determining, by the flow controller, with use of the set of operational limits corresponding to the service class, whether and by how much time the submission of a service request for processing should be delayed;
- and
- submitting the service request to the one or more resources for processing based on the determining step of the flow controller.
A storage system with improved performance comprising:
- one or more resources;
- one or more clients having requests for resources;
- a gateway for recording request timestamps;
- a request classifier for associating each request with a service class, said service class corresponding to a set of operational limits for limiting each request's of the storage system's resources, wherein the set of operational limits are determined from performance characteristics of the system resources and from level of performance guaranteed to each client;
- and
- a flow controller for determining, with use of the set of operational limits corresponding to the service class, whether and by how much time the submission of a request for processing should be delayed submitting the request to the one or more resources for processing based on the determining of the flow controller.
A computer-program product stored on a storage system to improve performance, the system having one or more resources, one or more clients having requests for resources, a request classifier and a flow controller, the computer-program product comprising computer program code for:
- directing a gateway to record a timestamp for each request;
- directing the request classifier to associate each request with a service class, said service class corresponding to a set of operational limits for limiting each request's of the storage system's resources, wherein the set of operational limits are determined from performance characteristics of the system resources and from level of performance guaranteed to each client;
- directing the flow controller to determined, with use of the set of operational limits corresponding to the service class, whether and by how much time the submission of a request for processing should be delayed;
- and
- directing the flow controller to submit the request to one or more resources for processing based on the determining of the flow controller.
Dependencies are inferred from the claim text.