OK, thanks for you response, I understand your point.

But what should I do, if there's a need for better perfomance
and customer says "well, I could buy another CPU or more RAM, but
I have also an extra unused machine here - couldn't we use it
instead of buying new CPU or RAM?" Should I try to explaint him
it's not a good idea?

I thought splitting my app between two machines should also give
me a significant performance even though the serialization overhead, 
shouldn't it?

Pavel

On Thu, 21 Nov 2002, David Ward wrote:

> Maybe I'm coming in late on this thread...
> 
> What *I* don't understand is why you think having your web container on 
> one machine and your ejb's on another would perform better.  Having your 
> servlets run in the same JVM as your ejb's allows your servlets to 
> access them with local interfaces, and you can pass your objects by 
> reference instead of by value (read: serialization unecessary).  You 
> will get much better performance if everything is in the same JVM.  Just 
> beef up your box instead of spending $$$ on two.
> 
> Now, if you want to have Apache serve up some static content and front 
> your app, that's fine (especially if for security reasons you want your 
> app server behind a firewall and your web server in the dmz).  However, 
> it will forward dynamic requests to your app server - where your web 
> container and ejb tier coexist in the same process.
> 
> David
> 
> --
> 
> Pavel Kolesnikov wrote:
> > On Wed, 20 Nov 2002, Dain wrote:
> > 
> > 
> >>There is no reason you have to separate the web container from the EJB 
> >>container.
> > 
> > 
> > I don't understand this - what if I want to run my application
> > on two machines because of performance reasons? What should
> > I do instead of putting my webapp on one machine and my EJBs
> > on the second one?
> > 
> > Pavel
> > 
> > 
> 
> 
> 
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