Mongrel users - Sep 2006 - Tracing a HTTP request/response through a scaled server deployment

Would anybody be interested in tracing a HTTP request/response through a 
typical Rails scaled server deployment?

I already posted something similar on the rails list but the post 
appears to have disappeared...

I am happy to write it up if I can get help at certain stages, I 
thinking something like this while might not particualy help people on 
this this list, since you are most likely familiar with deployment, but 
it would be useful to the Rails community in general since deployment is 
the bottleneck for Rails (IMHO). I think a lot of people are not used to 
dealing with HTTP, proxies etc. once it gets beyond a simple webrick 
deploy.

I would like to cover the web server (+ virtual hosts), proxy and the 
application servers and dispatcher. Anything else that I should add?

Thanks, K.