On Sunday 18 April 2010 11:33:44 Espen Berg wrote:
> All guest are Debian lenny with latest upstream kernel, hvm/kvm.
>
> We are using kvm-clock as guest source clock.
>
> cat /sys/devices/system/clocksource/clocksource0/current_clocksource
> kvm-clock
I had to deactivate C1E (AMD CPUs) and use ac
On 04/19/2010 12:29 PM, Gleb Natapov wrote:
On Mon, Apr 19, 2010 at 11:21:47AM +0200, Espen Berg wrote:
Den 18.04.2010 11:56, skrev Gleb Natapov:
That's two different things here:
The issue that Espen is reporting is that the hosts have different
frequency and guests that relay on the tsc as a
On Mon, Apr 19, 2010 at 11:21:47AM +0200, Espen Berg wrote:
> Den 18.04.2010 11:56, skrev Gleb Natapov:
>
> >>That's two different things here:
> >>The issue that Espen is reporting is that the hosts have different
> >>frequency and guests that relay on the tsc as a source clock will
> >>notice th
Den 18.04.2010 11:56, skrev Gleb Natapov:
That's two different things here:
The issue that Espen is reporting is that the hosts have different
frequency and guests that relay on the tsc as a source clock will
notice that post migration. The is indeed a problem that -tdf does
not solve. -tdf only
On Sun, Apr 18, 2010 at 12:22:54PM +0300, Dor Laor wrote:
> On 04/18/2010 02:21 AM, Espen Berg wrote:
> >Den 17.04.2010 22:17, skrev Michael Tokarev:
> We have three KVM hosts that supports live-migration between them, but
> one of our problems is time drifting. The three frontends has diff
Den 18.04.2010 11:22, skrev Dor Laor:
What do you mean by "adopts" ? Note that the cpu frequency
means nothing for all the modern operating systems, at least
since the days of common usage of MS-DOS which relied on CPU
frequency for its time functions. All interesting things are
now done using ti
On 04/18/2010 02:21 AM, Espen Berg wrote:
Den 17.04.2010 22:17, skrev Michael Tokarev:
We have three KVM hosts that supports live-migration between them, but
one of our problems is time drifting. The three frontends has different
CPU frequency and the KVM guests adopt the frequency from the host
Den 17.04.2010 22:17, skrev Michael Tokarev:
We have three KVM hosts that supports live-migration between them, but
one of our problems is time drifting. The three frontends has different
CPU frequency and the KVM guests adopt the frequency from the host
machine where it was first started.
What
17.04.2010 23:52, Espen Berg wrote:
Den 15.04.2010 09:35, skrev Espen Berg:
We have three KVM hosts that supports live-migration between them, but
one of our problems is time drifting. The three frontends has different
CPU frequency and the KVM guests adopt the frequency from the host
machine wh
Den 15.04.2010 09:35, skrev Espen Berg:
We have three KVM hosts that supports live-migration between them, but
one of our problems is time drifting. The three frontends has different
CPU frequency and the KVM guests adopt the frequency from the host
machine where it was first started.
Host1: cat
We have three KVM hosts that supports live-migration between them, but
one of our problems is time drifting. The three frontends has different
CPU frequency and the KVM guests adopt the frequency from the host
machine where it was first started.
Host1: cat /proc/cpuinfo
model name : Inte
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