Slow Netbeans

[Kanik Chakravarty]

Hello
Thanks for the suggestions.
I have changed the netbeans.conf options from
netbeans_default_options="-J-client -J-Xss2m -J-Xms32m -J-XX:PermSize=32m
-J-XX:MaxPermSize=200m -J-Dapple.laf.useScreenMenuBar=true
-J-Dapple.awt.graphics.UseQuartz=true -J-Dsun.java2d.noddraw=true"
to
netbeans_default_options="-J-client -J-Xss2m -J-Xms256m -J-Xmx1024m
-J-Xverify:none -J-XX:PermSize=64m -J-XX:MaxPermSize=400m
-J-Dapple.laf.useScreenMenuBar=true -J-Dapple.awt.graphics.UseQuartz=true
-J-Dsun.java2d.noddraw=true"
This has sped up the IDE a bit but is still slow.


Additional Information

I have 2 GB RAM.
Previously when I was running Netbeans on OpenJDK 1.6. preinstalled with
Ubuntu 10.10, it was really fast.
Now I am running it on a build version of OpenJDK 1.7 from the sources. (I
copied the j2sdk image from OpenJDK build folder to usr/lib/jvm and updated
the symlinks in etc/alternatives). I have not tried a product or fastdebug
build of OpenJDK 1.7.

Thanks and Regards
Kanik

On Tue, Dec 28, 2010 at 8:18 AM, charlie hunt <charlie.hunt at oracle.com>wrote:

>  If your home directory is on a network file system, since there's a
> .netbeans directory in home directory which contains project meta-data ...
> depending how frequently the meta-data is accessed, it too can also impact
> performance.  How frequently the meta-data is accessed depends on the
> operations you're doing.
>
> In the netbeans.conf file Kelly mentioned below, there is a definition for:
> netbeans_default_userdir="${HOME}/.netbeans/6.8"
> * Note:  The netbeans.conf file is usually found in <NetBeans install
> dir>/etc/netbeans.conf
>
> If you point netbeans_default_userdir to a directory on a file system local
> to your machine, it may also help.
>
> You can also specify a "userdir" at a command line invocation of NetBeans:
> $  netbeans  --userdir /path/to/some/directory
>
> The above would be an option if you didn't want to modify your
> netbeans.conf file to see if performance improves.
>
> I often times use the above convention to create distinct a "userdir" for
> each NetBeans project I work on.
>
> Also, to monitor JVM heap usage within the IDE, if the heap usage / memory
> icon in the toolbar is not enabled, you can enable it to observe JVM heap
> usage by selecting the menu item, View > Toolbars > Memory.  Look to see if
> the menu item has a "check" beside it.
>
> You can also click on the heap usage / memory icon in the tool icon at any
> time to invoke an explicit Full GC, (unless you're using
> -XX:-DisableExplicitGC).
>
> hths,
>
> charlie ...
>
>
> On 12/27/10 04:48 PM, Kelly O'Hair wrote:
>
> e.g.
>
>  My file ~/.netbeans/6.9/etc/netbeans.conf on my Mac laptop contains:
>
>  # options used by netbeans launcher by default, can be overridden by
> explicit
> # command line switches
> #
> netbeans_default_options="-J-Xms256m -J-Xmx768m -J-XX:PermSize=32m
> -J-XX:MaxPermSize=160m -J-Xverify:none -J-Dapple.laf.useScreenMenuBar=true
> -J-XX:+UseConcMarkSweepGC -J-XX:+CMSClassUnloadingEnabled
> -J-XX:+CMSPermGenSweepingEnabled
> -J-Dorg.netbeans.modules.mercurial.level=100"
>
>
>  But sometimes the reason NetBeans is slow is because by default it is
> scanning every source file, but
> usually that only happens when the project is opened, once.
> I'd need more information as to what part of NetBeans you think is slow.
>
>  -kto
>
>
>  On Dec 27, 2010, at 2:10 PM, John Pampuch wrote:
>
>  Also, in many ways, Netbeans behaves a bit like a server application
> (namely, it is long running, and uses quite a bit of memory).  Using the
> server compiler (add -server to the launch parameters) will help, though
> startup, and 'warmup' time will be a quite a bit longer.
>
> But start with heap space first!
>
> Note that Netbeans has its own configuration file where the Java parameters
> are set.
>
> -John
>
> On 12/27/10 1:08 PM, Jon Masamitsu wrote:
>
> One possibility is that you have too small a heap to run well.
> If you have not tuned your heap, try doubling its size and
> see if there is any improvement.
>
> On 12/27/2010 9:33 AM, Kanik Chakravarty wrote:
>
> Hello
> Does anybody use Netbeans for HotSpot development? Can anyone please
> suggest some tips to make Netbeans fast. Currently its painfully slow in my
> machine when using OpenJDK built from the sources. Thanks in advance.
>
> --
> Thanks and Regards,
> Kanik Chakravarty
>
>
>
>


-- 
Thanks and Regards,
Kanik Chakravarty
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