--- Steffen Schwigon <schwigon@[...].de>  wrote:

>  Hi!
>  
>  I'm about to intermix a Perl web application with SWI-Prolog.
>  Currently Language::Prolog::Yaswi seems to be useful.
>  
>  The prolog part ought to solve only one particular problem,
>  everything else is a mod_perl driven web app.
>  
>  Now I'm not sure about its performance. I expect about 1 to 3
>  requests
>  per second at peak times and I don't know yet how long my prolog
>  programm will take.
>  
>  Does Language::Prolog::Yaswi start a new "pl" process for every
>  query? 

No. It uses SWI-Prolog as a library, and the queries run inside the
perl process. L::P::Y just converts data structures between perl and
prolog. The overhead is relatively small, though it depends on how
big the data structures passing through the interface are.

Cheers,

  - Salvador


		
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