Well, I checked my logfile, and my child processes have been running for 2 days. No process has exited, and no process has been created, so globally my ZopeHandler Zope instances are up since Apache startup. About the ZEO persistent client cache, I had not thought about it. It looks like my ZopeHandler Zope instances did not need to flip their cache yet (because they are set to 64M I think), so no file was created until now. But if a file needed to be created, then it may be a problem, as each of the instances would try to use the same filename. I will try to investigate this when I have time to. I am not sure we can share anything between instances. I mean, each instance runs in a completely separate process. Pascal -----Message d'origine----- De : zope-bounces@zope.org [mailto:zope-bounces@zope.org]De la part de Chris Withers Envoyé : mercredi 9 février 2005 10:39 À : Tres Seaver Cc : Zope Mailing List Objet : [Zope] Re: Zope and mod_python Tres Seaver wrote:

This is the major benefit of the approach: sysadmins don't have to monitor / manage a separate daemon.

Well, you still need a seperate daemon for the storage server, but granted, that's one less than the usual setup of Apache - Zope Web - Zope Storage

Another potential benefit is that each child behaves as a single-threaded appserver, with no GIL-contention issues.

:-D

A potential downside is that the child processes will not be able to reused the local ZEO client cache.

Well, I assume they'll keep the same client cache for as long as the child process exists? I guess it would be nice to find a way that child process could use a persistent ZEO client cache, right? Does each child process need to have it's own client cache (I'm guessing the way Pascal currently has it working, that'll be the case, whether it's needed or not...) and if it doesn't, is there any way the processes could share the cache in the "mod_zope" setup? cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk _______________________________________________ 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 ) ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************