Richard Troy wrote:
On Fri, 3 Nov 2006, Richard Huxton wrote:
It's memory bandwidth issues on the older Xeons. If you search the
archives you'll see a lot of discussion of this. I'd have thought 8.1
would be better than 7.4 though.
Hmmm... I just checked; one of our production systems is a multi-cpu Xeon
based system of uncertain age (nobody remember 'zactly). While we haven't
seen this problem yet, it's scheduled to take over demo-duty shortly and
it would be an embarassment if we had this trouble during a demo... Is
there any easy way to tell if you're at risk?
Try:
- multiple clients
- query doing sorts that fit into work_mem
--
Richard Huxton
Archonet Ltd
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