초록 ▼

In a method and system for dynamically improving the performance of a server in a network, a tuning system monitors a workload of the server in real time, monitors a set of internal performance characteristics of the server in real time, and monitors a set of adjustable server parameters of the serv

In a method and system for dynamically improving the performance of a server in a network, a tuning system monitors a workload of the server in real time, monitors a set of internal performance characteristics of the server in real time, and monitors a set of adjustable server parameters of the server in real time. The workload of the server may include the frequency and type of service requests received by the server from clients in the network. The internal server performance characteristics may include, for example, a data cache hit ratio of a data cache in the server. The set of server parameters may include, for example, the overall data cache size or the data cache geometry of the server. The tuning system periodically alters one or more of the set of adjustable server parameters as a function of the workload and internal performance characteristics of the server. Since the tuning system is continuously monitoring workload and performance characteristics of the server and altering the server parameters accordingly, the effectiveness of a given change in the server parameters is reflected in the next set of monitored workload and performance values.

대표청구항 ▼

A method of operating a distributed computer system having client computers connected to a server computer, comprising the steps of: tabulating the average arrival rates of primitive requests emanating from the client computers and directed to the server computer during sampling intervals of operati

A method of operating a distributed computer system having client computers connected to a server computer, comprising the steps of: tabulating the average arrival rates of primitive requests emanating from the client computers and directed to the server computer during sampling intervals of operation of the computer system, the primitive requests being of different types and their average arrival rates being tabulated by request type, the set of primitive requests emanating from the client computers during each sampling interval collectively constituting a workload for that interval, and the set of tabulated arrival rates for the different primitive request types during each sampling interval being arranged to make up a workload vector for that interval; mapping the workload vectors to scalar workload values in a manner substantially guaranteeing that similar workloads map to similar workload values and that dissimilar workloads map to dissimilar workload values; monitoring the average utilization by each workload of a resource in the server computer; monitoring the average response time of the server computer to the requests in each workload; forming for each workload a corresponding 3-dimensional phase-space vector (mapped scalar workload value, monitored average resource utilization, monitored average response time); and plotting the formed 3-dimensional phase-space vectors in a corresponding 3-dimensional phase space.