From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: tim.c.chen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: Clock running at double speed in guest
Date: Sat, 27 Jan 2007 10:57:19 +0200 [thread overview]
Message-ID: <45BB13EF.1020204@qumranet.com> (raw)
In-Reply-To: <1169857906.30807.52.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
Tim Chen wrote:
> I notice that when I am testing kvm, the clock on guest is running at
> twice the speed. Same thing also happen using qemu without kvm.
>
> I look at my wall clock when I issue the command "time sleep 30". When
> the command returns and report 30 sec has elasped, I found that actually
> only 15 sec has passed on the wall clock. Perhaps somewhere an extra
> clock tick was counted.
>
>
That's a known issue, I plan to take a look at it soon.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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next prev parent reply other threads:[~2007-01-27 8:57 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-27 0:31 Clock running at double speed in guest Tim Chen
[not found] ` <1169857906.30807.52.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-01-27 8:57 ` Avi Kivity [this message]
[not found] ` <45BB13EF.1020204-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-01-28 9:37 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160A300FDE-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-01-29 19:44 ` Tim Chen
2007-03-06 13:34 ` Avi Kivity
[not found] ` <45ED6DE9.4060409-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-06 15:56 ` Tim Chen
[not found] ` <1173196568.8383.16.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-03-06 16:52 ` Avi Kivity
[not found] ` <45ED9C56.1050906-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-06 17:19 ` Tim Chen
2007-03-06 16:53 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160ABD6049-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-03-06 17:24 ` Tim Chen
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