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List:       jedit-users
Subject:    Re: [ jEdit-users ] jedit & xml plugin memory usage
From:       "Zaleski, Matthew (M.E.)" <mzaleski () ford ! com>
Date:       2006-12-08 21:05:28
Message-ID: ADCD8DD21673284D8527960173F521B3D6ED61 () na1fcm04 ! dearborn ! ford ! com
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Looks like Sun's NetBeans has a profiler available which I believe
amounts to "free" use on open source projects....

http://profiler.netbeans.org/index.html 

And seems to be compatible on a number of platforms according to this
snippet from the website:

The Profiler can profile applications running on the following JVMs:

    * A standard JDK 5.0_04 VM or later, JDK 5.0_09 or later is
recommended.
    * A standard JDK 6 Early Access VM starting from build 26, that can
be downloaded from JDK 6 EA Web site .
    * A customized JFluid VM, based on the standard JDK 1.4.2 VM, it can
be downloaded here . 

Supported operating systems/architectures are currently Solaris (both
SPARC and x86 platforms), Linux, Windows, Mac OS X. Both 32-bit and
64-bit JVMs are supported on Solaris, Linux and Windows.

> -----Original Message-----
> From: jedit-users-bounces@lists.sourceforge.net 
> [mailto:jedit-users-bounces@lists.sourceforge.net] On Behalf 
> Of Marcelo Vanzin
> Sent: Thursday, November 23, 2006 2:34 AM
> To: Adrian Baker
> Cc: jedit-users@lists.sourceforge.net
> Subject: Re: [ jEdit-users ] jedit & xml plugin memory usage
> 
> Hi Adrian,
> 
> Adrian Baker wrote:
> > I ran jedit under JProfiler for a couple of days: here's a 
> shot of the 
> > the allocation hot spot report. As you can see there seem to be two
> > culprits: xml parsing, presumably from the XML plugin for 
> validation 
> > etc, and an awt call from the textarea.
> 
> I think you forgot to attach the report, since I didn't see 
> anything on your e-mail.
> 
> Is there a tool like JProfiler that is free? We had something 
> like that built into the VM at my previous job, but I don't 
> want to buy the hardware you need to run that VM. :-)
> 
> > At the time jedit was reporting a heap size of about 200MB. 
> Note that 
> > nearly all of this disappears on a full garbage collect (which is 
> > extremely slow).
> 
> This doesn't fix the problem of large memory usage, of 
> course, but you could try to run with the "concurrent mark 
> and sweep" collector available in the VM. I heard it's been 
> vastly improved on Java 6. I don't remember how to enable it, 
> but I'm sure there are docs about it at the Sun web site.
> 
> --
> Marcelo Vanzin
> vanza@users.sourceforge.net
> "Life is too short to drink cheap beer"
> 
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