Monitoring Eclipse performance: what is Eclipse doing?

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+2 Q:

Monitoring Eclipse performance: what is Eclipse doing?

Lately I have been experiencing Eclipse Galileo (3.5) slowing down under Java 1.5b12 OR Java 1.6b10, every 10 to 15 minutes for about 30 seconds, it hits a 90-95% CPU load. The progress view shows nothing, however.

I'm suspecting a plugin is causing issues, but what I'd need is some tool or plugin to monitor Eclipse for what it is doing during those spikes.

Does such a plugin or tool exist?

Edit #1: added details about Eclipse version and Java version (d'uh, sorry)

+2 A:

If you have the right eclipse.ini, you can then monitor an eclipse session with JConsole.

eclipse.ini for 3.4.2
eclipse.ini for 3.5

I had the same issue with old eclipse3.4 or 3.4.1 installation. In both cases, switching to eclipse3.5 with the latest JDK solved the problem.

VonC 2009-09-11 08:26:14

info on what the "right eclipse.ini" is would be appreciated, sounds great.

Epaga 2009-09-11 08:27:26

ahh...now I get it, the links on the numbers are links to eclipse.ini's. Thought they were links to the Eclipse pages. :D

Epaga 2009-09-11 08:32:08

Thanks, I will be trying this and see if it helps (I also never tried build 1.6b16 yet).

Epaga 2009-09-11 08:37:29

Updating to 1.6b16 really helped - the slowdowns went away, thanks!

Epaga 2009-09-11 14:11:17

FYI: jvisualvm can watch an eclipse without any tinkering. Does your ini file expose additional information relevant for surveillance?

Thorbjørn Ravn Andersen 2009-09-13 10:24:31

@Thorbjørn Ravn Andersen: yes: `-Dcom.sun.management.jmxremote` registers the JVM instrumentation MBeans and publishes the RMI connector via a private interface to allow JMX client applications to monitor a local Java platform, that is, a JVM running on the same machine. See http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html

VonC 2009-09-13 10:33:05

See also http://stackoverflow.com/questions/516142/does-java-6-open-a-default-port-for-jmx-remote-connections

VonC 2009-09-13 11:04:31

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