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Date: Wed, 17 Feb 2010 22:30:29 +0200
From: John Hay <jhay@meraka.org.za>
To: Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no>
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Cc: freebsd-stable@freebsd.org
Subject: Re: ntpd struggling to keep up - how to fix?
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On Wed, Feb 17, 2010 at 08:03:22PM +0100, Torfinn Ingolfsen wrote:
> On Wed, 17 Feb 2010 19:49:27 +0100
> Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no> wrote:
> 
> > Unfortunately, it isn't enough to keep the machine in sync all the time.
> > But it is better than HPET so I'll keep it.
> 
> This thread is interesting:
> http://lkml.indiana.edu/hypermail/linux/kernel/0903.1/01356.html
> 
> Is there a way in FreeBSD to perform adjustmenst like adjtimex?
> 'apropos adjtime' only gives me a system call, 
> the man pages for hz(9) and hardclock(9) doesn't exist on 8.0-stable
> (or on 7.2-stable).

You can set the timecounter frequency with sysctl. On my one time
server I have these lines in /etc/sysctl.conf

machdep.tsc_freq=132658584
kern.timecounter.hardware=TSC

John
-- 
John Hay -- jhay@meraka.csir.co.za / jhay@FreeBSD.org