An application performance analyzer and corresponding method

An application performance analyzer (100) adapted to analyze the performance of one or more applications (141, 142, 143) running on IT infrastructure (131, 132, 133, 134), comprises:- a data collection engine (101) collecting performance metrics (121) for one or more applications (141, 142, 143) running on the IT infrastructure (131, 132, 133, 134);- an anomaly detection engine (102) analyzing the performance metrics (121) and detecting anomalies (122), i.e. performance metrics whose values deviate from historic values with a deviation that exceeds a predefined threshold;- a correlation engine (103) detecting dependencies between plural anomalies, and generating anomaly clusters (123), each anomaly cluster consisting of anomalies that are correlated through one or more of the dependencies;- a ranking engine (104) ranking anomalies within an anomaly cluster; and- a source detection engine (105) pinpointing a problem source (125) from the lowest ranked anomaly in an anomaly cluster.