Re: Which scales better? J2EE, PHP, or CGIDEV2?

[Thorbjoern Ravn Andersen <ravn@xxxxxxxxxx>]

 Den 07/10/10 20.47, Nathan Andelin skrev:
> > From: Thorbjoern Ravn Andersen
> > If I understand Aaron correctly, the problem is the HTTP server not
> > servicing requests fast enough, not necessarily that there are too few
> > threads. The behaviour described fits with the TCP/IP layer filling up.
> I subscribed the behavior to the HTTP server rejecting connections, probably due
> to limiting the number of threads, and at the same time enabling persistent
> connections.  If you only enable 10 connections, and hold on to each, somebody
> is bound to get rejected.
>
> I've done quite a bit of stress testing, and never encountered a rejected
> connection at the i/OS level; only at the HTTP server level.
I believe the TCP/IP layer refuses connections if the connections are 
not acknowledged fast enough by the listening program.  In your 
situation there should be enough threads that the HTTP-server does not 
deny connections by it self and the load should be  high enough that the 
HTTP-server cannot process the requests fast enough.

What loads (originating systems, simultaneous users, request intervals) 
were you testing with?