Development-Profiling WO Apps

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A profiler is a development tool that lets you examine memory useage and other bottlenecks in your app.

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=== Kieran Kelleher ===

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Free and simple. I like the built-in sun monitoring tool. Java 1.5+ only.

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Simply add appropriate argument to your launch configuration:

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[[image:config.jpg]]

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After that, open your unix terminal and type jconsole which launches the monitoring console and detects running java apps. Select your app and watch it at work. I like the Memory and Threads tabs.

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[[image:jconsole.jpg]]

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=== Ulrich Köster ===

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I've tried some of them.

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For the big problems jprofiler is great. The docs are useful, the interface is good and the performance is okay.

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I prefer jMechanic. It's small, free and works together with WOLips. Just some clicks to set it up.

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I don't remember much about the others. Some of them don't run under MacOSX and it can take a lot of time to find how to use them together with WO.

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profiler homepage: [[http://www.ej-technologies.com/products/jprofiler/overview.html]] j

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jmechanic homepage: [[http://sourceforge.net/projects/jmechanic/]]

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to see jmechanic in action click on the profiler link: [[http://objectstyle.org/woproject/gallery.html]]

Ulrich

=== Chuck Hill ===

If profiling on Windows is an option, you might also want to look at jSprint:

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[[http://www.javaperformancetuning.com/tools/jsprint/index.shtml]]

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It is shareware, US$50. I've used it and was satisfied with it. It seems like a good deal for the price. I've not (yet) used jMechanic, so I can't compare the two.

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Before you buy anything or try anything you would be well advised to spend a couple of hours at the above Java Performance Tuning site reading up on it: [[http://www.javaperformancetuning.com/index.shtml]]

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There is a lot of good information there.

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=== David Hrivnak ===

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(As of March 2007 the J-Sprint link above does not seem to work - the software may not be available anymore)

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None of the tools on this page appear to work with WebObjects 4.5.1 on Windows.

=== Mike Schrag ===

I use [[JProfiler>>http://www.ej-technologies.com/products/jprofiler/overview.html]] from [[ej-technologies>>http://www.ej-technologies.com]]. It works as well as any of the other big named profilers, and it has explicit support for WebObjects. It is, however, not free like some of the other suggestions.

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=== Pierce T. Wetter III ===

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The CHUD tools (i.e. Shark) work on Java.

Wiki source code of Development-Profiling WO Apps