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From: Chris Friesen <cfriesen@nortelnetworks.com>
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To: Ingo Molnar <mingo@elte.hu>
CC: Con Kolivas <kernel@kolivas.org>,
       ck kernel mailing list <ck@vds.kolivas.org>,
       linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
       Arjan van de Ven <arjanv@redhat.com>
Subject: Re: [ck] Re: [announce] [patch] Voluntary Kernel Preemption Patch
References: <20040711143853.GA6555@elte.hu>
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Ingo Molnar wrote:
> it was reporting more accurate latencies, except that there were strange
> spikes of latencies. It turned out that for whatever reason, userspace
> RDTSC is not always reliable on my box (!).

Would the fact that rdtsc is not serializing have any effect here?  Or would 
that be a small enough error to not have any effect?

Chris