X high CPU when using Java applications

Only recently, my Freemind program has become extremely sluggish and unresponsive (big lag) when moving my mind map around. Freemind is made with Java. If I move the mind map around, the X process shoots to 20% CPU, doesn't seem a lot but something between X and Java programs are really bringing their performance down.
I can barely use Freemind now. Freeplane is also affected.
I noticed if I keep the Freemind window really small, it's responsive. If I maximise it, everything slows down within the application. Adding new notes, or move the map around, shoots X to a high CPU and there is a 5+ second lag in anything I do in the app.
Is there anything I can do to improve performance? It's only started recently, everything is up-to-date.
Last edited by nLinked (2013-06-08 13:57:31)

Hi
Try to use -Xloggc parameter with the jvm in order to see if problem comes on garbage colector. May be the mem usage is little and the gc thread is in active state. Try, also modify the mem usage with -Xms and -Xmx parameters and see the gc efects.
You can use the -Xprof to output cpu profiling data.
Also, find if there is a bug on servlet container / hard /SO you are using.
Hope this helps

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