Proportional quality of service based on client usage and system metrics

A non-transitory computer-readable medium having instructions stored thereon, which when executable by a processor of a distributed storage system, cause the distributed storage system to:

• determine system metrics of the distributed storage system based upon use of the distributed storage system by a plurality of clients;
• calculate a system load value based upon the system metrics, wherein the system load value quantifies a load on the distributed storage system by the plurality of clients;
• calculate client loads for the plurality of clients, wherein each client load of the client loads represents a contribution to the use of the distributed storage system by an individual client of the plurality of clients and is expressed as a relative degree or amount of the system load value;
• calculate a target performance value for a first client of the plurality of clients based on the calculated client load corresponding to the first client, and based on a quality of service parameter value provisioned for the first client to access the distributed storage system;
• and
• introduce or remove a latency for the first client based upon the target performance value.

A method comprising:

• determining system metrics of a distributed storage system based upon use of the distributed storage system by a plurality of clients;
• calculating a system load value based upon the system metrics, wherein the system load value quantifies a load on the distributed storage system by the plurality of clients;
• calculating client loads for the plurality of clients, wherein each client load of the client loads represents a contribution to the use of the distributed storage system by an individual client of the plurality of clients and is expressed as a relative degree or amount of the system load value;
• calculating a target performance value for a first client of the plurality of clients based on the calculated client load corresponding to the first client, and based on a quality of service parameter value provisioned for the first client to access the distributed storage system;
• and
• introducing or removing a latency for the first client based upon the target performance value.