Date: Fri, 16 Mar 2007 10:11:40 +1100 From: "Jan Mikkelsen" <janm@transactionware.com> To: "'Axel Rau'" <Axel.Rau@Chaos1.DE>, <freebsd-amd64@freebsd.org>, <freebsd-database@freebsd.org> Subject: RE: New Opteron box, dedicated to PostgreSQL Message-ID: <000801c76757$4a6cf9e0$0204a8c0@jmlaptop> In-Reply-To: <8CDBEAF9-0945-4CD2-89C4-58AA63850ECC@Chaos1.DE>
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Hi, Axel Rau wrote: > 1. Are there any precautions in fbsd to prevent from excessive page > switching between the memory nodes? > E.g. what happens if file cache pages (heavily used by Pg, > planned 6GB) frequently not found on local node? Not that I'm aware of. FreeBSD doesn't have NUMA awareness. > 2. If there is no good solution for this problem, does it make sense > to stay with one dualcore (soon quadcore) processor? Benchmark and see. > 4. Can I install the system on an Areca raid? Yes. If you are planning to use 6.2-RELEASE, make sure that you get the arcmsr driver from 6-STABLE. The arcmsr driver in 6.2-RELEASE can show I/O errors under high load. Regards, Jan Mikkelsen
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