[Xen-users] Time diferrence between dom0 and domU

[Jordi Espasa Clofent <jespasac@xxxxxxxxxxxx>]

Hi all,

In dom0:

xen01ad:/# ls -l /etc/localtime
lrwxrwxrwx 1 root root 33 2009-07-02 10:51 /etc/localtime ->
/usr/share/zoneinfo/Europe/Madrid
xen01ad:/# ntpdate hora.rediris.es
 3 Nov 18:49:46 ntpdate[9558]: adjust time server 130.206.3.166 offset
0.163783 sec

In domU:

xen-ad0006:~# date
Tue Nov  3 18:55:29 CET 2009
xen-ad0006:~# ls -l /etc/localtime
lrwxrwxrwx 1 root root 33 Nov  3 13:24 /etc/localtime ->
/usr/share/zoneinfo/Europe/Madrid
xen-ad0006:~# ntpdate hora.rediris.es
 3 Nov 18:55:44 ntpdate[19800]: step time server 130.206.3.166 offset
-294.467004 sec

As you can see, the time difference between dom0 and domU is aprox 6 min.
¿why?

It's supposed that domUs has the dom0's time.

Info:

* I don't use the independent_wallclock
* xen01ad:/# uname -a && xm info
Linux xen01ad 2.6.18-6-xen-amd64 #1 SMP Tue May 5 09:56:33 UTC 2009
x86_64 GNU/Linux
host                   : xen01ad
release                : 2.6.18-6-xen-amd64
version                : #1 SMP Tue May 5 09:56:33 UTC 2009
machine                : x86_64
nr_cpus                : 8
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2110
hw_caps                :
178bf3ff:efd3fbff:00000000:00000110:00802001:00000000:000037ff
total_memory           : 16383
free_memory            : 4161
node_to_cpu            : node0:0-7
xen_major              : 3
xen_minor              : 2
xen_extra              : -1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.3.1 (Debian 4.3.1-2)
cc_compile_by          : waldi
cc_compile_domain      : debian.org
cc_compile_date        : Sat Jun 28 09:32:18 UTC 2008
xend_config_format     : 4

--
I must not fear. Fear is the mind-killer. Fear is the little-death that
brings total obliteration. I will face my fear. I will permit it to pass
over me and through me. And when it has gone past I will turn the inner
eye to see its path. Where the fear has gone there will be nothing. Only
I will remain.

Bene Gesserit Litany Against Fear.


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