From: Shaun Thomas <sthomas@peak6.com>
To: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: pgsql-performance@postgresql.org
Cc: Claire Chang <yenhsiac@yahoo.com>
Subject: Re: Postgres 8.4 memory related parameters
Date: Thu, 4 Aug 2011 16:58:03 -0500
Message-ID: <4E3B15EB.1020603@peak6.com> (raw)
In-Reply-To: <4E3ACEB4020000250003FB10@gw.wicourts.gov>
References: <1312489633.71838.YahooMailClassic@web31912.mail.mud.yahoo.com>
<4E3ABCFB020000250003FAF4@gw.wicourts.gov>
<4E3B08D3.606@peak6.com>
<4E3ACA8C020000250003FB05@gw.wicourts.gov>
<4E3B13E8.7050002@peak6.com>
<4E3ACEB4020000250003FB10@gw.wicourts.gov>
On 08/04/2011 04:54 PM, Kevin Grittner wrote:
>> it peaked at 2x physical cores, where it ended up being 60%
>> faster than true cores.
>
> Not sure I understand the terminology here -- "physical cores" is
> counting HT or not?
No. So with a dual X5675, that's 12 cores. My numbers peaked at
24-concurrency. At that concurrency, HT was 60% faster than non-HT.
Sorry if I mixed my terminology. :)
--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 800 | Chicago IL, 60604
312-676-8870
sthomas@peak6.com
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To: pgsql-performance@postgresql.org
Cc: sthomas@peak6.com, Kevin.Grittner@wicourts.gov, yenhsiac@yahoo.com
Subject: Re: Postgres 8.4 memory related parameters
In-Reply-To: <4E3B15EB.1020603@peak6.com>
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