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[protege-discussion] Protege 3.3.1 - PROMPT plugin - Mac OSX 10.5

Fieran Mason-Blakley fieranmason at gmail.com
Fri Oct 31 15:46:40 PDT 2008


Thank you so much that was immensely helpful

On Fri, Oct 31, 2008 at 3:42 PM, Thomas Russ <tar at isi.edu> wrote:

>
> On Oct 31, 2008, at 2:36 PM, Fieran Mason-Blakley wrote:
>
> > I am having major performance problems with a very simple ontology.
> > There can't be more than about 50 elements in either all told -
> > Entities and Instances that is.  When I say major I mean it is
> > taking 20 seconds to do a user mapping between two elements and
> > after running through that because no suggestions showed up as the
> > documentation suggested, it has slowed to the point where I think it
> > is unlikely I'll be able to save my work.  Knowing how popular this
> > product is I have a hard time believing that I have it configured
> > correctly.
> >
> > Any advice would be appreciated
>
> IIRC the Mac application version of Protege for version 3.3.1 comes
> out of the box with a very small maximum memory allocation.  This
> causes severe performance issues for Java, since time is spent mostly
> in the garbage collector.
>
> You can see if this is the problem by looking at the VM options for
> the applications.
>
> Here's how to do it:
>
> 1.  Select the Protege Application.
> 2.  Right Click (Control-Click) and select "Show Package Contents"
> 3.  Open the "Contents" folder.
> 4.  Double-click on "Info.plist".  It will open in the Property List
> Editor
> 5.  Expand the "Java" item in the window.
> 6.  Expand the "VMOptions" subitem.
> 7.  Check the value of the "-Xmx..." item.
> 8.  Make sure the number is some reasonable amount, like "-Xmx512M" or
> more.
>     Edit the value if necessary to make it bigger. (Double click and
> change the number).
>
> If there is no item like that under VMOptions, then you will have to
> add it:
> a.  Select "VMOptions"
> b.  Click the "Add Child" button at the top of the editor window
> c.  Type "-Xmx512M" (without the quotes) into the box.  You might
> choose a higher number as well.
>
>
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