[Zope] Global Interpreter Lock and four processors...

[Chris Petrilli]

> We have a four processor Sun box (each processor scores about 2400 
> pystones, whereas a 500 MHz P3 gets about 5400 pystones).

Isn't Sun hardware impressive? ;-)

> I have three zope installations running, one of which is hosting 
> three subsites. If I create four *binary* installations of Zope 
> (complete with the thread-safe MySQL adaptor and all the other python 
> libraries necessary to run a Zope site), will I run into the global 
> interpreter lock?

You will, but only within each installation.  Each time you start a new
Python interpreter you'll get a new lock :-) This of course that you
also have them all in separate object databases as well.
 
> What I'm saying is if I *don't* use /usr/local/bin/python for my Zope 
> installations, but instead rely on ZOPE_HOME/bin/python, will I be 
> able to spread my Zope sites out over the four processors, or is 
> there a nasty sting in the tail in doing this?

It has nothing to do with which Python you use, but instead that there
are multiple Python's in multiple process spaces.

Chris
--
| Christopher Petrilli                        Digital Creations
| petrilli@digicool.com                 http://www.digicool.com

> 
> thanks in advance,
> tone.
> ------
> Dr Tony McDonald,  FMCC, Networked Learning Environments Project 
> http://nle.ncl.ac.uk/
> The Medical School, Newcastle University Tel: +44 191 222 5888
> Fingerprint: 3450 876D FA41 B926 D3DD  F8C3 F2D0 C3B9 8B38 18A2
> 
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