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Re: Mac OS X Java Performance

Armin Ehrenreich <email@hidden> wrote:

>"SwingSet2" demo start it from the command line to watch the output.
>Watch startup time.

If startup time is a major problem, prestarting the JVM and having it
preload classes should improve things. This assumes most JVM elements
(libs, classes, JITC'ed code, etc.) are being shared among multiple
processes, as I've read that Apple's JVM does. The remaining question then
would be deciding which classes (and their JNI-libs, if any) would be the
most valuable ones to preload.

In general, I have noticed that starting a Java program again is much
faster than the very first time. It might be worth a little
experimentation with a Placeholder app to find out if it really makes a
practical difference. If it works out, turning it into a startup-item
would be relatively straightforward:

<http://www.opensource.apple.com/projects/documentation/howto/html/SystemStarter_HOWTO.html>

In any case, this would be a work-around, not a fix, so you should still
file a bug-report on this problem, including all the supporting evidence
and test-cases you can gather.

-- GG
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