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Re: [Xen-devel] Dom0 Hang for large VCPU counts > PCPU

  • To: "Zulauf, John" <john.zulauf@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxxxxxxxx>
  • Date: Wed, 24 Jan 2007 19:44:28 +0000
  • Delivery-date: Wed, 24 Jan 2007 11:44:37 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acc/6WSeIoDi05TDRUmkOjJugvswfgAAfEFXAABQQFAAAN4YEw==
  • Thread-topic: [Xen-devel] Dom0 Hang for large VCPU counts > PCPU

On 24/1/07 7:28 pm, "Zulauf, John" <john.zulauf@xxxxxxxxx> wrote:

> Clarifying the initial report:
> Host is 2 core (Core 2 Duo/965 chipset) box with VPCU=PCPU for Dom0.
> Issue occurs when attempting to start an HVM DomU with VCPU >= 24 (though we
> haven't checked 21-23 yet).
> The DomU never(apparently) starts, and Dom0 hard hangs. (i.e. not even the
> numlock key works)
> Given that Dom0 hangs hard when this occurs, we don't have any ideas as to the
> exact cause of death.

Sorry, I misread the initial report.

So the HVM guest doesn't get as far as running hvmloader as far as you know?

Do the Xen debug keys work? (requires you to have a serial line connected)

 -- Keir

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