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Re: [Xen-devel] Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely high jitter/noise? runs stable/quiet under non-xen kernel.
From: mail ignored <0.bugs.only.0@xxxxxxxxx>
Date: Mon, 18 Jan 2010 13:50:41 -0800
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Xen User-List <xen-users@xxxxxxxxxxxxxxxxxxx>
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On Mon, Jan 18, 2010 at 11:29 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> What was the default clocksource for you, showing the bad ntpd
> behaviour?

from above,

  > On Sun, Jan 17, 2010 at 1:33 PM, Keir Fraser
<keir.fraser@xxxxxxxxxxxxx> wrote:
  >> What platform timer does Xen say is initialised during boot?
  >
  > xm dmesg | egrep -i "timer|clock"
  > (XEN) ACPI: PM-Timer IO Port: 0x808
  > (XEN) ..TIMER: vector=0xF0 apic1=0 pin1=2 apic2=-1 pin2=-1
  > (XEN) Platform timer is 14.284MHz HPET
  > (XEN) HPET: 4 timers in total, 3 timers will be used for broadcast
  > (XEN) mcheck_poll: Machine check polling timer started.

, looks like HPET,

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