HP-UX Java™ – HPjtune Wins JDJ Editor's Choice Award

»	Excerpts from JDJ July 2004 edition

The editors of JDJ are in a unique position when it comes to Java™ development. All are active coders in their "day jobs," and they have the good fortune of getting a heads up on many of the latest and greatest software releases. The editors of JDJ were asked to choose three products from the last 12 months that they felt had not only made a major impact on their own development, but also on the Java™ community as a whole.

HPjtune
HPjtune is a core component of the first generation of the reference platform Itanium® 2 processor - HP-UX version that bundles HP-UX 11i v1.6 with essential HP-UX tools, compilers, and technical documentation into a single source to speed your next development project.

HPjtune is a tool that is offered freely by HP. It offers its users a simple visualization of the logs produced by garbage collection when the -verbose:gc flag has been set. Though there is enough information in logs to diagnose many memory utilization problems, much of that information must be massaged out of the raw data. HPjtune not only does a wonderful job of culling this information, it does a nice job of presenting the data in an understandable format. What makes this tool even more interesting is that if an HP JVM has produced the logs, you can use that data to run a simulation under different memory configurations. I have found the results of these simulations to be a fairly reliable prediction of how a particular configuration will perform in production. In this editor's humble opinion, HPjtune is an essential tool to have when you are trying to resolve memory problems.

HPjtune is available free from the HP-UX Java™ Archived Releases.