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From cmanola...@yahoo.com
Subject Re: JMX remote and JDK 1.5
Date Fri, 06 Feb 2004 07:49:50 GMT
Remy Maucherat wrote:

> Hi,
> 
> It looks like the new JDK has an easy way to add a connector (and even
> SNMP) to a VM, without the need for explicit support in the application,
> using system properties (on the command line) like:
> - com.sun.management.config.file
> - com.sun.management.snmp.port
> - com.sun.management.jmxremote.port
> I expect other vendors will provide a similar feature :)
> 
> As a result, there's no need to reinvent the wheel inside Tomcat, and
> I'm shelving my plans to add a listener to instantiate JMX remote (no
> need to add complexity), and will unbundle JMX remote (only the JMX RI
> core will be bundled); instead, I'll add a little chapter about JMX in
> the docs :)

What does it mean ? 
I saw the 1.5 jmx stuff, but as usual this only works with 1.5 while most
people will keep using 1.3 or 1.4 for few years. I hope we're not falling
into the forced upgrade trap :-)

I agree that tomcat should't reinvent the wheel - but provide some mechanism
for 1.4, maybe similar ( or identical ) with what 1.5 provides. This would
also allow people with 1.3 or 1.4 to enjoy JMX now. 

Costin



> 
> With this JDK, JMX remote powered clients are going to become a standard
> almost instantly, since the only requirement is that the server is
> instrumented though JMX. So good job to the J2SE team, this doesn't seem
> beta (although they didn't test JBoss, it doesn't work right now, as a
> side effect of bundling JMX :-( ).
> 
> On the performance side, my (client) VM seems as fast as JDK 1.4.2, but
> does seem to use a little bit less memory. So unless it turns out to be
> really unstable (it does seem better than almost all the other Sun JDKs
> I've tried, so far), final 1.5.0 should be really successful when it's
> released.
> 
> Rémy



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