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 09:27:22AM -0800, mail ignored wrote:
> forgot to ask ...
> 
> > And this to configure the weight:
> >        xm sched-credit -d Domain-0 -w <weight>
> 
> where/what is the "right" place/method to set those for survive across boot?
> 
> grub? in /etc/init.d/(late boot script)?
> 

/etc/rc.local maybe.. you need to do it after xend has started.

> > You might want to give dom0 for example weight of 384 or 512,
> > so it'll have more weight than the guests (the default weight is 256).
> 
> > You can use this for xen.gz in grub.conf:
> > dom0_vcpus=1 dom0_vcpus_pin
> 
> how is maxcpus=N different?  is that a 'normal' kernel construct?  do
> i still need it, if using dom0_vcpus?
>

you don't need Linux kernel maxcpus= option when you specify Xen hypervisor 
dom0_vcpus=X. 
Dom0 Linux kernel won't see more than X CPUs then.

-- Pasi


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