WARNING - OLD ARCHIVES

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/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] Time went backwards 885 ms

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Time went backwards 885 ms
From: Carsten Schiers <carsten@xxxxxxxxxx>
Date: Fri, 27 Mar 2009 10:18:37 +0100
Delivery-date: Fri, 27 Mar 2009 02:19:28 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Dear all,

I thought this might be worth again to report:

After rebooting a 3.3.1/2.6.18.8 environment on my AMD 4050e, I received a 885ms delta just
after powernow-k8 loaded:

Mar 26 21:28:37 data kernel: powernow-k8: Found 2 AMD Athlon(tm) Dual Core Processor 4050e processors (version 2.20.00)
Mar 26 21:28:37 data kernel: powernow-k8:    0 : fid 0xd (2100 MHz), vid 0xe
Mar 26 21:28:37 data kernel: powernow-k8:    1 : fid 0xc (2000 MHz), vid 0xf
Mar 26 21:28:37 data kernel: powernow-k8:    2 : fid 0xa (1800 MHz), vid 0x11
Mar 26 21:28:37 data kernel: powernow-k8:    3 : fid 0x2 (1000 MHz), vid 0x16
Mar 26 21:28:37 data kernel: Timer ISR/1: Time went backwards: delta=-885437842 delta_cpu=6562158 shadow=11822142480 off=436198 processed=12708016520 cpu_p
rocessed=11816016520
Mar 26 21:28:37 data kernel:  0: 12704016520
Mar 26 21:28:37 data kernel:  1: 11816016520

Find full xm dmesg, xm info, and syslog of boot attached.

Otherwise, the environment is more stable; Time went backwards appear roughly every 2-3 days,
mostly when there is a 1,0->2,1GHz jump when munin asks for CPU. It is reduced in addition by a
4 sec sampling time of the ondemand govenor.

Will test 3.4 as soon as released.

BR,
Carsten.


Attachment: syslog.txt
Description: Text document

Attachment: xmdmesg.txt
Description: Text document

Attachment: xminfo.txt
Description: Text document

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
<Prev in Thread] Current Thread [Next in Thread>