Message-ID: <45DF8D36.3080001@hagander.net>
Date: Sat, 24 Feb 2007 01:56:22 +0100
From: Magnus Hagander <magnus@hagander.net>
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To: Geoffrey <esoteric@3times25.net>,  pgsql-performance@postgresql.org
Subject: Re: which Xeon processors don't have the context switching
 problem
References: <45DF3B15.1070609@3times25.net> <20070223193854.GA9763@uio.no>
	<20070223195318.GG20242@alvh.no-ip.org>
In-Reply-To: <20070223195318.GG20242@alvh.no-ip.org>
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Alvaro Herrera wrote:
> Steinar H. Gunderson wrote:
>> On Fri, Feb 23, 2007 at 02:05:57PM -0500, Geoffrey wrote:
>>> In searching the archives, I can't find any specific info indentifying 
>>> which Xeon processors don't have this problem.
>> AFAIK the cut-off point is at the Woodcrests. They are overall much better
>> suited to PostgreSQL than the older Xeons were.
>>
>> It's slightly unfortunate that AMD and Intel cling to the Opteron and Xeon
>> names even though they're making significant architecture changes, but that's
>> life, I guess.
> 
> AFAIR Intel has been calling their server processors Xeon since Pentium
> Pro's, at least.
> 
Almost. Xeon was the new name for the "Pro" series. Instead of Pentium
II Pro, we got Pentium II Xeon. The whole Pentium Pro line was a server
line, which is why initial Pentium-II CPUs were significantly slower for
server apps than the much older ppro (which still runs pg at a
reasonable speed if you have enough of them and a low budget, btw)

//Magnus