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Re: Turn off Hyperthreading! WAS: 60 core performance with 9.3 - Mailing list pgsql-performance

From Shaun Thomas
Subject Re: Turn off Hyperthreading! WAS: 60 core performance with 9.3
Date
Msg-id 53F506B5.1040507@optionshouse.com
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In response to Re: Turn off Hyperthreading! WAS: 60 core performance with 9.3  (Josh Berkus <josh@agliodbs.com>)
Responses Re: Turn off Hyperthreading! WAS: 60 core performance with 9.3  (Peter Geoghegan <peter.geoghegan86@gmail.com>)
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On 08/20/2014 02:13 PM, Josh Berkus wrote:

> So we're definitely back to "If you're using PostgreSQL, turn off
> Hyperthreading".

That's so strange. Back when I did my Nehalem tests, we got a very
strong 30%+ increase by enabling HT. We only got a hit when we turned
off turbo, or forgot to disable power saving features.

--
Shaun Thomas
OptionsHouse, LLC | 141 W. Jackson Blvd. | Suite 800 | Chicago IL, 60604
312-676-8870
sthomas@optionshouse.com

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