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Date: Wed, 09 Nov 2011 23:44:15 +0000
From: Bruce Cran <bruce@cran.org.uk>
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To: John Baldwin <jhb@freebsd.org>
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Cc: arch@freebsd.org, Ed Schouten <ed@80386.nl>,
	Alfred Perlstein <alfred@freebsd.org>,
	Jilles Tjoelker <jilles@stack.nl>, freebsd-arch@freebsd.org
Subject: Re: [PATCH] fadvise(2) system call
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On 08/11/2011 13:00, John Baldwin wrote:
> I think it would be fine to add flags to applications like 'tar' to 
> allow users to alter their behavior in specific use cases when it 
> makes sense. However, I think there are more workloads for 'tar' than 
> the ones you are thinking of and we should be hesitant to change 
> applications to use non- default settings.

Someone's done that for GNU tar on Linux, adding a --no-oscache switch: 
http://www.mysqlperformanceblog.com/2010/04/02/fadvise-may-be-not-what-you-expect/ 
.

-- 
Bruce Cran