Re: [Xen-users] hi all..... probleme with clocksource

[Gémes Géza <geza@xxxxxxxxxxx>]

amina elbekkali írta:
>
> HI everybody, i wish you are all fine
>
> I'm actually working in a project based on xen 3.2 wich was installed
> in debian lenny 5.0
>
> afeter being installed (the hypervisor); i created a first virtual
> machine and  things were going verry well still i rebooted the dom0
> (the host); afet that; the virtual machine shell display this strange
> and unending messages:
>
>
>  5933.125364] clocksource/0: Time went backwards: ret=2ee31f49829
> delta=-5892086159522 shadow=2ee2e490302 offset=3abce2e
> [ 5933.125368] __ratelimit: 3750 messages suppressed
> [ 5933.125368] clocksource/0: Time went backwards: ret=2ef5bfb10b8
> delta=-5887086125075 shadow=2ef584efaba offset=3ac4ee1
> [ 5933.125372] __ratelimit: 3750 messages suppressed
> [ 5933.125372] clocksource/0: Time went backwards: ret=2f0860093fd
> delta=-5882086153422 shadow=2f082551c87 offset=3abacf7
> [ 5933.125376] __ratelimit: 3750 messages suppressed
> [ 5933.125376] clocksource/0: Time went backwards: ret=2f1b006c737
> delta=-5877086136724 shadow=2f1ac5b47ff offset=3abb52a
> [ 5933.125380] __ratelimit: 3750 messages suppressed
> [ 5933.125380] clocksource/0: Time went backwards: ret=2f2da0c691a
> delta=-5872086157233 shadow=2f2d660c71e offset=3abd321
> [ 5933.125383] __ratelimit: 3750 messages suppressed
> [ 5933.125383] clocksource/0: Time went backwards: ret=2f40412b64a
> delta=-5867086133889 shadow=2f40066b202 offset=3ac3d66
>
> ................................................
>
> on the net, i found that the probleme can be solved; i should just
> follow this tutorial:
>
> http://tuttodebian.blogspot.com/2008/05/xen-clocksource0-time-went-backwards.html
>
> unfortunately after this 4steps:
>
> #cat /etc/sysctl.conf | grep xen
> xen.independent_wallclock=1
>
> # cat /sys/devices/system/clocksource/clocksource0/current_clocksource
> xen
>
> # cat /sys/devices/system/clocksource/clocksource0/available_clocksource
> xen jiffies
>
> # echo jiffies >
> /sys/devices/system/clocksource/clocksource0/current_clocksource
>
> i couldn't find in the configuration file of the virtual machine the line:
>
> extra = 'xencons=tty clocksource=jiffies'
>
> so the probleme still exist.
>
> please if someone was once able to solve this problem. please post me
> the solution i will be grateful.
>
> regards
> ------------------------------------------------------------------------
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
If you are using pygrub to boot your DomU, then you should add every
configuration related to the DomU kernel, like clocksource=jiffies to
the kernel command line on your grub config file. Tipicaly on Debian
system it is: /boot/grub/menu.lst on the DomU.

Regards

Geza

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