Subj : Re: Performance?
To   : Rickard <rickard@dreambean.com>
From : Igor Bukanov <igor@fastmail.fm>
Date : Thu Jun 19 2003 07:41 pm

Rickard wrote:
> Hi!
> 
> I'm using Rhino as a way to accomplish dynamic extensions (aka portlets) 
> in our CMS, and also as a shell-type tool to access the system.
> 
> Functionality wise everything is the way I want it to be, but the 
> performance is a bit troubling. Most of the time we do 5-10 lines of 
> code to get some data by calling services, then transforming it to be 
> suitable for HTML output. What surprised me is that these small snippets 
> can take about 100ms (and sometimes up to 500ms) to execute.
> 
> I've tried all the usual suspects: doing a shared scope, calling 
> setOptimizationLevel(9) (which made no difference at all), etc.

You should call setOptimizationLevel(-1) to force pure interpreted mode. 
In your case this is exactly what you need since this will avoid 
creation and loading of Java classes which can be extremly slow.

Regards, Igor

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