JaViz: A client/server Java profiling tool

The Java(TM) programming language, with its portability object-oriented mod el, support for multithreading and distributed programming, and garbage col lection features is becoming the language of choice For the development of large-scale distributed applications Without a suitable performance analysi s tool for Java programs, however, it is often difficult to analyze the pro grams for performance-tuning problems. The profiler included in Sun's Java Development Kit (JDK(TM)) 1.1 does not provide sufficiently detailed trace information to address performance issues in large applications. Also, if d oes not support the tracing of client/server applications, which are very i mportant for analyzing distributed systems. The JaViz performance analysis tool generates execution traces with sufficient detail to determine program hot spots, including remote method calls, in a distributed Java applicatio n program. JaViz provides a graphical display of the program execution tree for the entire distributed application in the form of a call graph for eas e of visualization. A number of features allow users to analyze the executi on free for performance-tuning problems more easily than other Java perform ance monitoring fools. The usability and functionality of the JaViz fool se t is demonstrated by applying it to an example distributed Java application program.