I was reading the thread about Zope vs AOLServer and performance and threading and all that. I've done some work with other interpreters embedded in the apache child processes (tcl, mod-perl) so I started wondering if this would work for zope. Somewhere I think there is a Python interpreter embedded a'la mod-perl. If not, I'm pretty sure it can be done without too much grief, using mod-perl and mod-dtcl as starting points or examples. It seems to me this would allow utilization of multiple processors, esp for apps with a database backend, since the work would be split up over n frontend apache server processes and n backend database processes (at least for oracle an PostgreSQL)[1]. All without worrying about threading... But... What happens when multiple processes attempt to access the zame ZODB Data.fs file? Is it multi-process safe? Thread safe? How big are the sections protected by the mutexes? (or more importantly how long do they take to execute). Thanks, -- cary [1] m apache talking to n database backend process, m > n, might be even nicer in some cases. Gotta write that PostgreSQL backend multiplexor someday.