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Re: [Xen-devel] time still going backwards

To: Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] time still going backwards
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Wed, 13 Oct 2004 08:25:36 +0100
Cc: Tim Freeman <tfreeman@xxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 13 Oct 2004 08:32:17 +0100
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In-reply-to: Your message of "Wed, 13 Oct 2004 03:18:36 BST." <E1CHYir-0006dD-00@xxxxxxxxxxxxxxxxx>
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If you're getting APIC errors then all other bets are off, quite
frankly. Do you get any of these messages on a native Linux 2.4
kernel?

 -- Keir

> > xm dmesg:
> > 
> > (XEN) APIC error on CPU0: 00(02)
> > (XEN) APIC error on CPU1: 00(02)
> 
> Odd. Probably not terminal, though.
> 
> > Xen0 dmesg, just two error messages:
> > Timer ISR: Time went backwards: -59799000
> > Timer ISR: Time went backwards: -48699000
> 
> Interesting. So both both the xenU domains are reporting a 14s
> skip, and dom0 is reporting a larger skip (though this may be a
> different incident).


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