[Attempto] Memory

[Tobias Kuhn]

Hi John,

I am using the Java arguments -Xmx400m and -Xss4m for the public AceWiki instances. Thus, 2048M
seems to be more than enough.

Is only reasoning going slow or everything?

The public AceWiki instances run at reasonable speed but they also get slow when the knowledge base
gets complex. The reasoner Pellet does not always scale nicely.

AceWiki does not use the latest version of Pellet 2.0 but the older 1.5.2 for license reasons. So it
might be that switching to Pellet 2.0 would make AceWiki faster. However, I am not sure whether the
Pellet interface is still 100% the same...

At some point, I considered using the Hermit reasoner which is claimed to be faster than other
reasoners. But there seems to be a bug, or at least it did not work out for AceWiki.


Tobias



John Gilman wrote:
> I've built a small ontology with AceWiki.  I'm running it on 
> Linux/Tomcat with -Xmx in TomCat set to 2048M, and it seems to be very 
> slow.  How much memory do you recommend for a medium size ontology?  Is 
> there some other memory setting I need to change?
> 
> 
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