| From: | Richard Troy <rtroy(at)ScienceTools(dot)com> |
|---|---|
| To: | Richard Huxton <dev(at)archonet(dot)com> |
| Cc: | <creimer(at)brturbo(dot)com(dot)br>, <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Context switch storm |
| Date: | 2006-11-03 14:10:21 |
| Message-ID: | Pine.LNX.4.33.0611030607350.1126-100000@denzel.in |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
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?
Thanks,
Richard
--
Richard Troy, Chief Scientist
Science Tools Corporation
510-924-1363 or 202-747-1263
rtroy(at)ScienceTools(dot)com, http://ScienceTools.com/
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