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From swirl <swirl...@yahoo.com>
Subject Re: Running Uima in Tomcat (memory issue)
Date Wed, 17 Jul 2013 08:19:59 GMT
Richard Eckart de Castilho <richard.eckart@...> writes:

> 
> Am 17.07.2013 um 05:11 schrieb swirl <swirlobt@...>:
> 
> > I am wrapping a Uima analysis engine in a Tomcat JSF webapp.
> > 
> > This AE loads and parses a large model file (300Mb).
> > 
> > I can call the AE and run it using SimplePipeline.runPipeline() via the 
> > webapp UI.
> > 
> > However, the large model took up a large memory chunk that won't go away 
even 
> > after the AE is run to completion. 
> > 
> > Does Uima do any clean up of in-memory object instances after the AE is 
> > completed?
> 
 
> In a webapp context, to avoid long initialization times, I would
> recommend creating an instance of the AnalysisEngine and keep it
> around. Use some queuing to make sure it never used by more than
> one request at a time. UIMA AEs are not really thread safe.  
> No worries about garbage collection here, because the AE will
> live as long as your application is running.
>  

Thanks Richard for your quick and informative response.

You mentioned keeping around a instance of the AE, sorry for the noob 
question but what is the method you propose? 

This? http://stackoverflow.com/questions/5668820/sharing-a-class-instance-
between-all-users-with-tomcat 


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