Evaluation of QoS in Distributed Systems: A Review

Quality of Service (QoS) is a significant concept in distributed systems. Therefore, several studies within QoS for distributed systems have been researched over the past years. It is very difficult to deliver an appropriate QoS level for frameworks running in different open resource environments, including the Internet. A distributed system's QoS characteristics are affected by the QoS of the specific hosts involved, and the QoS of the networking subsystem linking these hosts. This paper reviews the state-of-the-art of distributed systems evolution in QoS architecture. In the context of distributed systems, the method adopted is to address QoS terms and a generalized QoS system for identifying and explaining QoS