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From: John Baldwin <jhb@freebsd.org>
To: "Jung-uk Kim" <jkim@freebsd.org>
Date: Tue, 21 Jun 2011 09:10:25 -0400
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org, Bruce Evans <brde@optusnet.com.au>
Subject: Re: svn commit: r222866 - head/sys/x86/x86
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On Monday, June 20, 2011 7:41:00 pm Jung-uk Kim wrote:
> My questions to you:
> 
> a) Why do we care TSC timecounter when it is not invariant where we 
> *know* it is unusable and set to negative quality?

What if the user knows they will not enable CPU throttling so for them the TSC 
is safe?  In that case, TSC is a more efficient timecounter and if the user
constrains the system to make the TSC safe we should let them use it.

-- 
John Baldwin