Re: Proper cherrypy config to run multiple sites on same server

>
> > 1 Cherrypy process for all the sites (with thread pool taking advantage 
> of multi core) 
> > or 
>
> Python thread pools cannot use multiple cores effectively because of the 
> Python GIL 
>
> I have heard this alluded to before.  I would like to understand this 
limitation better - where can I read about it and about what can and cannot 
be done about it?
 

> > 1 Cherrypy process for each site ? 
> > or 
> > 1 Cherrypy process per core ? 
>
> 1 server process per core is right.


Are you saying one process per site and one process per core?  That would 
assume that every "site" is equally busy and that no site ever needs more 
than one core.  I would start by saying one process per SITE and then tune 
the number of threads based on the load each site gets, but this may run 
into these Python-WSGI serialisation and/or Python GIL thread-pool 
issues... In that case you need to start looking at multiple processes per 
SITE for the sites with a heavier demand.

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