Re: [Xen-users] Desynchronize clock

To:	"Ulrich Windl" <ulrich.windl@xxxxxxxxxxxxxxxxxxxx>
Subject:	Re: [Xen-users] Desynchronize clock
From:	"Nicholas Lee" <emptysands@xxxxxxxxx>
Date:	Sat, 10 Mar 2007 21:48:36 +1300
Cc:	"xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Delivery-date:	Sat, 10 Mar 2007 00:47:50 -0800
Dkim-signature:	a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=FXRZJpxH8O5bOfJSfItN32BwdQ+FjbwVTN6PhdqsCa8Ahr4QBLGS1jIIArvR/qZ0jW/ZSd6izAQS7d17Jfax27KoFwLUa0BYA8eSK7g4W6TEX31b/yDfiM+/fY2f73Ujq0nHp+4zD/7J214i4gAeqVwRVhKPkaaKwcYVSGUL/co=
Domainkey-signature:	a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=rTF+1reqeH3YKeZ/yhzryp1TPJsDmKCgsX0Oxx2TsmLB6XZMqcrGKgTNxag9qgHBKbbJM7sQukq1xEKWne5EHJwt4nHUlXjnyzakHxP4QQ3Vwix/PB62tGWAYknJdftIMCUL03L0ZmdiEtIu/dZpnLD7sSdh0WwZEX6XhqDIbsE=
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxx
In-reply-to:	<45EFD935.30412.1DF4D7A2@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
List-help:	<mailto:xen-users-request@lists.xensource.com?subject=help>
List-id:	Xen user discussion <xen-users.lists.xensource.com>
List-post:	<mailto:xen-users@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References:	<60D45469A1AAD311A04C009027B6BF680614683A@SERVER20> <45EFD935.30412.1DF4D7A2@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender:	xen-users-bounces@xxxxxxxxxxxxxxxxxxx

On 3/8/07, Ulrich Windl <ulrich.windl@xxxxxxxxxxxxxxxxxxxx> wrote:

I know it does not help you, but in VMware I see exactly the same: When starting a
VM, the time displayed is correct, but when you don't have "VMware tools set up
for time sync", the clock is back half an hour or so within a few hours.

A have a historical problem with clocks displaying the wrong time ;-)

There is a good discussion of this here:
http://rextang.net/blogs/work/archive/2006/12/21/4516.aspx
and
http://kb.vmware.com/KanisaPlatform/Publishing/329/1420_f.SAL_Public.html

I'm not sure that Xen/HVM uses the similar method as vmware for time sync but I think one of the keys in increasing HZ. I'm not sure how at all HVM would work with clocks and windows. Maybe the PV drives have this functionality like vmware-tools.

Nicholas

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

WARNING - OLD ARCHIVES

xen-users

Re: [Xen-users] Desynchronize clock