Clocksource tsc unstable with CentOS 6.4 on Proxmox 2.3 / KVM

[NoOne1337]

Hi @all,

I've set up a promox 2.3 node with a CentOS 6.4 KVM VM, but I got the following messages in my dmesg:

Clocksource tsc unstable (delta = 67615874 ns). Enable clocksource failover by adding clocksource_failover kernel parameter.
Clocksource tsc unstable (delta = -114042029 ns). Enable clocksource failover by adding clocksource_failover kernel parameter.
Clocksource tsc unstable (delta = 67615812 ns). Enable clocksource failover by adding clocksource_failover kernel parameter.
...
Clocksource tsc unstable (delta = -114042052 ns). Enable clocksource failover by adding clocksource_failover kernel parameter.
Clocksource tsc unstable (delta = 67615887 ns). Enable clocksource failover by adding clocksource_failover kernel parameter.

[root@vmtest001 ~]# cat /sys/devices/system/clocksource/clocksource0/current_clocksource
kvm-clock
[root@vmtest001 ~]# cat /sys/devices/system/clocksource/clocksource0/available_clocksource
kvm-clock tsc hpet acpi_pm

Did someone has an idea how to fix this?

--
NoOne1337

 

[zBrain]

1. Make sure /boot is mounted (if necessary)
2. In /boot/grub/grub.conf add "clocksource_failover=acpi_pm" to the end of the kernel line
3. Reboot

Aternatively, try "clocksource=acpi_pm"