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Re: [Lsf-pc] Linux kernel impact on PostgreSQL performance - Mailing list pgsql-hackers

From Robert Haas
Subject Re: [Lsf-pc] Linux kernel impact on PostgreSQL performance
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Msg-id CA+TgmoZqA4wiqeZ_WR9Naf09dnObVQ6-204+vKuyAUtbi1Ei+A@mail.gmail.com
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In response to Linux kernel impact on PostgreSQL performance  (Mel Gorman <mgorman@suse.de>)
Responses Re: [Lsf-pc] Linux kernel impact on PostgreSQL performance  (Trond Myklebust <trondmy@gmail.com>)
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On Mon, Jan 13, 2014 at 3:53 PM, Trond Myklebust <trondmy@gmail.com> wrote:
> O_DIRECT was specifically designed to solve the problem of double buffering between applications and the kernel. Why
areyou not able to use that in these situations?
 

O_DIRECT was apparently designed by a deranged monkey on some serious
mind-controlling substances.  But don't take it from me, I have it on
good authority:

http://yarchive.net/comp/linux/o_direct.html

One might even say the best authority.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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