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 ▼

[ What is claimed is:] [1.] A method of operating a data cache, comprising the steps of:initializing a flag variable OK.sub.-- TO.sub.-- INCREASE to TRUE;periodically determining a moving average hit ratio R.sub.avg for the data cache over a first number of preceding periods;for the following cases

[ What is claimed is:] [1.] A method of operating a data cache, comprising the steps of:initializing a flag variable OK.sub.-- TO.sub.-- INCREASE to TRUE;periodically determining a moving average hit ratio R.sub.avg for the data cache over a first number of preceding periods;for the following cases of the determined value of R.sub.avg, performing the corresponding steps as follows:0.ltoreq.R.sub.avg .ltoreq.50%: if the size of the data cache is less than a maximum size S.sub.max, then increasing the number of buffers in the data cache to the lesser of twice the number of buffers in the cache during the present period and a maximum number N.sub.ht of buffers contained in the data cache when the data cache size is S.sub.max ;50%