Date: Wed, 09 Nov 2011 23:44:15 +0000 From: Bruce Cran <bruce@cran.org.uk> To: John Baldwin <jhb@freebsd.org> 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 Message-ID: <4EBB104F.5010000@cran.org.uk> In-Reply-To: <201111080800.32717.jhb@freebsd.org> References: <201110281426.00013.jhb@freebsd.org> <4EB2C9DD.9090606@FreeBSD.org> <20111104160319.GD6110@elvis.mu.org> <201111080800.32717.jhb@freebsd.org>
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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
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