Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely high jitter/noise? runs stable/quiet under non-xen kernel.

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Jan 13, 2010 at 10:10:32AM -0800, mail ignored wrote:
> On Wed, Jan 13, 2010 at 10:08 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> > What dom0 kernel you were running again? I can't remember anymore.
> 
> np.
> 
> it's distro-provided -- opensuse 11.2's,
> 

OK.. so you might want to report a bug to the opensuse bugzilla.

>  uname -a
>  Linux test 2.6.31.8-0.1-xen #1 SMP 2009-12-15 23:55:40 +0100 x86_64
> x86_64 x86_64 GNU/Linux
> 
>  lsb_release -a
>  LSB Version:
> core-2.0-noarch:core-3.2-noarch:core-4.0-noarch:core-2.0-x86_64:core-3.2-x86_64:core-4.0-x86_64:desktop-4.0-amd64:desktop-4.0-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch
>  Distributor ID: SUSE LINUX
>  Description:    openSUSE 11.2 (x86_64)
>  Release:        11.2
>  Codename:       n/a
> 
>  rpm -qa | grep -i ^xen-3
>  xen-3.4.1_19718_04-28.1.x86_64
> 
> > Looks like it didn't like when cpus were removed on-the-fly.
> 
> which is fine, i suppose, as long as we can get it to stick at boot.
>

"dom0_vcpus=1 dom0_vcpus=pin" options should do it.
Verify with "xm dmesg" that there parameters are really there.

-- Pasi


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