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Date:      Fri, 19 Dec 2014 17:41:01 +0000
From:      "Poul-Henning Kamp" <phk@phk.freebsd.dk>
To:        John Baldwin <jhb@freebsd.org>
Cc:        "freebsd-arch@freebsd.org" <arch@freebsd.org>, Adrian Chadd <adrian@freebsd.org>, Jilles Tjoelker <jilles@stack.nl>
Subject:   Re: Change default VFS timestamp precision?
Message-ID:  <82135.1419010861@critter.freebsd.dk>
In-Reply-To: <7567696.mqJ3jgzJgL@ralph.baldwin.cx>
References:  <201412161348.41219.jhb@freebsd.org> <77322.1418933100@critter.freebsd.dk> <77371.1418933642@critter.freebsd.dk> <7567696.mqJ3jgzJgL@ralph.baldwin.cx>

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In message <7567696.mqJ3jgzJgL@ralph.baldwin.cx>, John Baldwin writes:

>Yes, and multiplication is cheaper than division.  It's not a power of
>two (so more than a single bitshift), but possibly in the noise compared
>to the work in bintime() itself.

But why not use nanosecond resolution given that the cost is cheaper ?

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.



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