Fwd: Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely high jitter/nois

[jim burns <jim_burn@xxxxxxxxxxxxx>]

----------  Forwarded Message  ----------

Subject: Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely high 
jitter/nois
Date: Wed January 13 2010, 9:36:53 pm
From: jim burns <jim_burn@xxxxxxxxxxxxx>
To: mail ignored <0.bugs.only.0@xxxxxxxxx>

On Wed January 13 2010 9:28:12 pm you wrote:
> hi
> 
> On Wed, Jan 13, 2010 at 5:55 PM, jim burns <jim_burn@xxxxxxxxxxxxx> wrote:
> > All of the SuSE /etc/init.d/boot.xxx scripts execute before any services
> > start to run - and thus in particular, before xend is started. You will
> > have to create a simple service, put it in /etc/init.d, and put a soft
> > link to it, called something like S99local, from /etc/init.d/rc5.d (for
> > runlevel 5, etc.) back to /etc/init.d/local. The 99 ensures that it will
> > be the last service executed.
> 
> i'm surprised if this'll in fact be the case, as both
> 
> >  /usr/sbin/xenpm set-scaling-governor ondemand
> >  /usr/sbin/xenpm set-scaling-governor performance
> 
> in the boot.local script clearly take effect @ boot.  just NOT the last cmd
> 
> >  /usr/sbin/xm sched-credit -d Domain-0 -w 512
> 
> in any case, np dealing with it.
> 
> thanks.

Then xenpm must communicate directly to the hypervisor, and not depend on 
xend. I noticed that your 'xm dmesg' output showed it worked, but your weight 
wouldn't of worked, since 'xm' depends on xend.

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