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Asked: 2026-05-13T16:42:20+00:00

Sorry I have several question relative to the same problem. I am using Netbeans

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Sorry I have several question relative to the same problem.

I am using Netbeans 6.8 on OSX 10.5.8 with java 1.6.0_17 and after about 5 minutes of work, the cpu usage of netbeans process (and java) are around 100%.

It is often due to:
– “go to declaration” command
– completion command
– more or less doing 2 or 3 basic actions such as entering text

I already do the following to enhance performance, without success:
– specific PHP netbeans
– remove all unnecessary plugin and modules

So my question is how to solve this problem and enhance java and netbeans performance on OSX?

More precisely:
– will a change in garbage collection policy enhance performance? And how to do this?
– will a change in default java look and feel enhance performance? Which L&F is the lightest?
– how can I “backtrace” this problem more precisely?

Sorry for all this questions in the same post but I am running out of idea concerning this problem… Thank you in advance for your advices, hints and help!

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1 Answer

  1. Editorial Team

    You could try to increase available heap for netbeans.
    The settings are in $NETBEANS_HOME/etc/netbeans.conf

    The interessting one is netbeans_default_options
    Default is: -J-Xms32m I would start with -Xms256m -Xmx512m with -J (prefix)

    EDIT: From netbeans.conf

    If you specify the heap size (-Xmx) explicitely, you may also want to enable
# Concurrent Mark & Sweep garbage collector. In such case add the following
# options to the netbeans_default_options:
# -J-XX:+UseConcMarkSweepGC -J-XX:+CMSClassUnloadingEnabled -J-XX:+CMSPermGenSweepingEnabled
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