From: Magnus Hagander <magnus@hagander.net>
To: Geoffrey <esoteric@3times25.net>
To: pgsql-performance@postgresql.org
Subject: Re: which Xeon processors don't have the context switching problem
Date: Sat, 24 Feb 2007 01:56:22 +0100
Message-ID: <45DF8D36.3080001@hagander.net> (raw)
In-Reply-To: <20070223195318.GG20242@alvh.no-ip.org>
References: <45DF3B15.1070609@3times25.net>
<20070223193854.GA9763@uio.no>
<20070223195318.GG20242@alvh.no-ip.org>
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
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To: pgsql-performance@postgresql.org
Cc: magnus@hagander.net, esoteric@3times25.net
Subject: Re: which Xeon processors don't have the context switching problem
In-Reply-To: <45DF8D36.3080001@hagander.net>
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