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Date: Tue, 13 Feb 2007 15:55:41 -0800 (PST)
From: Christoph Lameter <clameter@sgi.com>
To: Vojtech Pavlik <vojtech@suse.cz>
cc: Andi Kleen <ak@suse.de>, Arjan van de Ven <arjan@infradead.org>,
       Jiri Bohac <jbohac@suse.cz>, linux-kernel@vger.kernel.org,
       ssouhlal@freebsd.org, tglx@linutronix.de, johnstul@us.ibm.com,
       zippel@linux-m68k.org, andrea@suse.de
Subject: Re: [patch 4/9] Remove the TSC synchronization on SMP machines
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On Tue, 13 Feb 2007, Vojtech Pavlik wrote:

> The interaction with ntpd can be fixed and I've done it in the past
> once, although the fix wasn't all that nice.

It can be and was fixed by gradually moving time instead of jumping to 
the new time. F.e. the time interpolator on ia64 gradually adapts the 
intervals so that synchronization is obtained.