You should be running 2 Zopes - one for each CPU since Python doesn't really take advantage of SMP. I can't comment on the threads issue (I assume that you are running the ZSS on another box, which is similar to my setup, so I'm interested in finding out the answer to this myself), but I can suggest that if you do run 2 zopes on the same box, look into the 'schedutils' package for your Linux distro and use the taskset command, which is a utility that uses system calls to set CPU affinity of a process, will allow you to bind each Zope instance (via process to CP to a given CPU to avoid the Python GIL performance penalty. I haven't done this yet, so I'm not sure if you need to have your startup scripts run taskset on all Zope threads? Sean -----Original Message----- From: Chris Muldrow [mailto:cmuldrow@fredericksburg.com] Sent: Wednesday, February 19, 2003 12:42 PM To: Zope Subject: [Zope] Zope and a multiprocessor machine Say I've got a multiprocessor machine on Linux. I've got a ZEO running. Does it make more sense to run one Zope client on that box with 8 threads or two clients with 4 threads? Chris Muldrow _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )