Re: help tuning queries on large database - Mailing list pgsql-performance

From Mark Lewis
Subject Re: help tuning queries on large database
Date
Msg-id 1136939286.22590.27.camel@archimedes
Whole thread Raw
In response to Re: help tuning queries on large database  (Ron)
Responses Re: help tuning queries on large database  (Ron)
List pgsql-performance
Ron,

A few days back you mentioned:

> Upgrade your kernel to at least  2.6.12
> There's a known issue with earlier versions of the 2.6.x kernel and
> 64b CPUs like the Opteron.  See kernel.org for details.
>

I did some searching and couldn't find any obvious mention of this issue
(I gave up after searching through the first few hundred instances of
"64" in the 2.6.12 changelog).

Would you mind being a little more specific about which issue you're
talking about?  We're about to deploy some new 16GB RAM Opteron DB
servers and I'd like to check and make sure RH backported whatever the
fix was to their current RHEL4 kernel.

Thanks,
Mark Lewis

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