From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir@xensource.com>
Subject: Re: [Patch] Fix the slow wall clock time issue in x64
	SMPVista
Date: Wed, 10 Jan 2007 13:49:34 +0000
Message-ID: <C1CA9F6E.7693%keir@xensource.com>
References: <666CC8FCE3247C4DA876BA979059781A5C288B@pdsmsx401.ccr.corp.intel.com>
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To: "Cui, Dexuan" <dexuan.cui@intel.com>, Keir Fraser <keir@xensource.com>, xen-devel@lists.xensource.com
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On 10/1/07 12:00, "Cui, Dexuan" <dexuan.cui@intel.com> wrote:

> I just removed the vcpu_kick() in hpet_timer_fn(), and booted an SMP FC5
> guest:
> I found a warning message on the console:
> 
> Warning: many lost ticks.
> Your time source seems to be instable or some driver is hogging interrupts
> rip __do_softirq+0x4a/0xd2
> Falling back to HPET

Getting this message must just be a weird coincidence. Linux never uses HPET
as its source of periodic tick interrupts.

 -- Keir