Jens, Thanks for your input.
Unfortunately, I am out of the office this week. When I return I will be trying to resolve this issue. I don't believe it has squat to do with my Database at all, so I will be setting up some scenarios where I am making simultaneous requests, requiring no DB access. I will echo the data to my screen, hopefully I will see an interwoven jumble of characters as my web server is sending text "simultaneously" to multiple clients. If I don't see an interwoven jumble of stuff representing the various threads, then my problem is more fundamental than DB contention. I appreciate everyone's help. Jon Emmons On Fri, May 23, 2008 at 1:55 PM, Andreas Jung <[EMAIL PROTECTED]> wrote: > > > --On 23. Mai 2008 12:31:50 -0500 Jens Vagelpohl <[EMAIL PROTECTED]> > wrote: > > >> On May 23, 2008, at 11:49 , Jon Emmons wrote: >> >>> Another thought I had, is that Zope has only one python interpreter >>> running, >>> pretty much forcing all processing to be serial by default given >>> what you've >>> just said. >>> >> >> Sorry, that's all baloney. Just like blindly hiking the number of threads >> or the ZODB database connection pool size. Zope can handle more than one >> concurrent request. >> >> I would take a close look at the Zope database adapter for your >> relational database you are using. Some are not thread-enabled and will >> serialize database access. >> > > Not much to be added. Either your backend server blocks further requests > (as indicated earlier by a database lock) or some extension module is > holding the GIL. We have seen situation where Python did not perform a > thread switch while working on a complex regular expression operation in one > thread (preventing a thread switch over ten seconds and longer). > > Andreas > _______________________________________________ > 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 ) > >
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