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Date: Fri, 27 Mar 2009 13:02:49 -0700
From: Julian Elischer <julian@elischer.org>
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To: Scott Long <scottl@samsco.org>
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Cc: Sergey Babkin <babkin@verizon.net>, freebsd-hackers@freebsd.org,
	attilio@freebsd.org, phk@phk.freebsd.dk,
	freebsd-current@freebsd.org, prashant.vaibhav@gmail.com
Subject: Re: Improving the kernel/i386 timecounter
	performance	(GSoC	proposal)
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Scott Long wrote:
> I've been talking about this for years.  All I need is help with the VM 
> magic to create the page on fork.  I also want two pages, one global
> for gettimeofday (and any other global data we can think of) and one
> per-process for static data like getpid/getgid.

interestingly it is even feasible to have a per-thread page..
it requires that the scheduler change a page table entry tough.