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