Re: Some performance testing?

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Mel Llaguno <mllaguno(at)coverity(dot)com>, Przemysław Deć <przemyslaw(dot)dec(at)linuxpolska(dot)pl>
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Some performance testing?
Date: 2015-04-08 19:05:19
Message-ID: 55257BEF.1010101@agliodbs.com
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On 04/07/2015 11:07 AM, Mel Llaguno wrote:
> Care to elaborate? We usually do not recommend specific kernel versions
> for our customers (who run on a variety of distributions). Thanks, M.

You should.

http://www.databasesoup.com/2014/09/why-you-need-to-avoid-linux-kernel-32.html

Performance is literally 2X to 5X different between kernels.

--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com

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