I'm rather hoping that Postgres isn't the problem, but I can reliably hang my Zope site using what I think should be fairly reasonable code. Could you try something for me - make a ZSQL query, a PythonScript, and a DTML document, and in the pythonscript do this: print context.standard_html_header(context,context.REQUEST) for v in context.SQL_query(param1='whatever'): print context.dtml_document(context,REQUEST, p1=v.p1, p2=v.p2, p3=v.p3, <etc...> p13=v.p13, p14=v.p14, p15=v.p15, p16=v.p16) print context.standard_html_footer(context,context.REQUEST) return printed The DTML document just has to contain anything: <P>Placeholder text</P> Then call the PythonScript (access it's URL) as *fast* as you can (say as fast a reasonable machine can generate the query). The more fields the SQL query returns (and thus the more named parameters to the DTML document), the easier it is to crash. I get a mix of semi-hangs (child 4 threads dying), hangs (one of the 4 dies, Zope locks up in handling a SIGSTOP as told by "strace -p pid -d", or coredumps with sigsegv). And no, there are no hardware problems. This only happens in very specific circumstances, but I can show you a page where it happens all the time. *Something* is going on, and it's crippling my development. Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Steve Drees [mailto:drees@the-bridge.net] Sent: 04 April 2001 20:15 To: Mayers, Philip J; 'Daniel Rusch'; zope@zope.org Subject: RE: [Zope] Help: Zope is extremely slow

That sounds suspiciously like the "Zope dying" problem that a lot of people seem to be having. You aren't by any chance using Postgresql are you?

Postgres is not necessarily the problem. Zope is solid as a rock at www.wejustrock.com and it is using postgresql.