Well, I will check the options I used to compile python (I think it was default options). But I think that threading is mainly required for the Zope Servers (HTTP, FTP, WEBDAV), which is precisely the part of the functionality we move to Apache in the attempt I did (each child process runs a Zope instance that only has one thread, i.e. that only handles one request at a time and that only has 1 connection to ZEO). Another place where threads were needed is ZODB, but again, in my attempt, ZODB is handled in an external ZEO instance. Pascal -----Message d'origine----- De : David Bear [mailto:David.Bear@asu.edu] Envoyé : mardi 8 février 2005 17:35 À : Pascal Peregrina Objet : Re: [Zope] RE: Zope and mod_python this is interesting. Last I tried, mod_python was NOT thread enabled, and therefore would NOT work with zope which needed a threaded version of python. Has mod_python gone threaded now? On Tue, Feb 08, 2005 at 11:43:46AM +0100, Pascal Peregrina wrote:

The targeted architecture is : Apache2/mod_python/ZopeHandler <-> ZEO

At startup Apache initialize a pool of child processes (the processes that handle requests). Each Apache child process starts a python interpreter (mod_python does it) which in turns initialize an embedded Zope instance.

Child processes are reusable, so if you correclty set the pool in Apache, the python processes should live as long as Apache itself.

Note that I am not an Apache/mod_python specialist. It's just that when I wanted to try running Zope with mod_python, I found on the web that apparently noone had done it before, and even that in odler versions of mod_python it was clearly stated that it was impossible to achieve. So I just decided to expose what I did to the community, to get feedback.

My installation has now been running for 5 days, and I have still no issues, both browsing my site or using the ZMI.

Pascal

-----Message d'origine----- De : Chris Withers [mailto:chris@simplistix.co.uk] Envoyé : mardi 8 février 2005 11:36 À : Pascal Peregrina Cc : 'zope@zope.org ' Objet : Re: [Zope] RE: Zope and mod_python

Pascal Peregrina wrote:

...

This is because each request is handled in a dedicated Apache process, which is linked to an independent python process.

Hmmm, how and where are connections made to the ZODB? Is there still a long-running process with this method?

Chris

-- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk

********************************************************************** 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 **********************************************************************

_______________________________________________ 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 )

-- David Bear phone: 480-965-8257 fax: 480-965-9189 College of Public Programs/ASU Wilson Hall 232 Tempe, AZ 85287-0803 "Beware the IP portfolio, everyone will be suspect of trespassing"