Expert system for identifying performance limitations of processing operations of digital data processing system

摘要

An expert system for processing performance data indicative of the performance of a computer system. The expert system includes a plurality of investigation nodes arranged in an investigation tree arrangment having a root node and a plurality of leaf nodes. Each investigation node defines an investigation operation in connection with a performance aspect of a computer system as represented by an item of said performance data and includes pointers to at least two other investigation nodes in the investigation tree. A theshold list includes a plurality of threshold entries each identifying a threshold value. A control module iteratively processes investigation nodes in the investigation tree from said root node to a leaf node. at each investigation node performing the investigation operation in connection with an item of performance data and a threshold entry in said threshold list means. The control module selects each investigation node to be processed based on the pointers and the result of processing.