This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] repeatable time jump

To: Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] repeatable time jump
From: David Becker <becker@xxxxxxxxxxx>
Date: Wed, 29 Sep 2004 13:32:00 -0400
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Delivery-date: Thu, 30 Sep 2004 00:52:11 +0100
Envelope-to: steven.hand@xxxxxxxxxxxx
In-reply-to: <E1CCPWu-00036m-00@xxxxxxxxxxxxxxxxx>
List-archive: <http://sourceforge.net/mailarchive/forum.php?forum=xen-devel>
List-help: <mailto:xen-devel-request@lists.sourceforge.net?subject=help>
List-id: List for Xen developers <xen-devel.lists.sourceforge.net>
List-post: <mailto:xen-devel@lists.sourceforge.net>
List-subscribe: <https://lists.sourceforge.net/lists/listinfo/xen-devel>, <mailto:xen-devel-request@lists.sourceforge.net?subject=subscribe>
List-unsubscribe: <https://lists.sourceforge.net/lists/listinfo/xen-devel>, <mailto:xen-devel-request@lists.sourceforge.net?subject=unsubscribe>
References: <20040928210803.GK921@xxxxxxxxxxx> <E1CCPWu-00036m-00@xxxxxxxxxxxxxxxxx>
Sender: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.6+20040523i
" Close, but not identical. The hwclock time will be written back
" periodically.

How periodically?

" Bizarre. Anything unusual about this machine compared to the
" others that are OK? 

As of now I am getting repeatable time jumps on 4 of 16, plus another 3 that
jump occasionally but not always.

The machines are all IBMs.  IBM x330, x335 and HS20 blades.
The repeatable hosts have 1GB of mem.  THe hosts with only 512 or
256MB ram don't seem to be affected. 
How could memory size matter?

They are running 2.6 in xen0 and xenU, and use the latest sarge
distribution from Debian.

This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
Xen-devel mailing list