--On 23. Mai 2008 12:31:50 -0500 Jens Vagelpohl <jens@dataflake.org> 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