[Zope] Serious write-performance issue with multiple threads.
Tue, 18 Jun 2002 20:59:11 +0200
Arnar Lundesgaard writes:
> The problem has been scarily easy to reproduce, and manifests itself
> whenever multiple persons are working (writing articles etc). As long as
> only one person is working on the site, it has the expected performance.
> Not very fast, a few seconds per write operation, but acceptable.
> However as soon as more people log in and start publishing, we often
> experience hangs which may last for 10-15 minutes on write operations
> that usually takes only a few seconds to perform. In this situation Zope
> doesn't respond to any requests.
Maybe, there are "ConflictError"s. When they occur, Zope
automatically restarts the requests. I have some doubts that
Zope does it in a way that prevents a new "ConflictError" with high
probability. On the other hand, it is not too likely, that
the automatic repetition increases the time by almost two orders...