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[Xen-users] Re: [Xen-devel] Max. PV and HVM Guests

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: [Xen-users] Re: [Xen-devel] Max. PV and HVM Guests
From: "Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>
Date: Mon, 9 Nov 2009 11:35:02 +0800
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, space.time.universe@xxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
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Yes. I will try to see if there's a traceback.

Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My Primary Blog: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Secondary Blog: http://enmingteo.wordpress.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe@xxxxxxxxx
Mobile Phone (Starhub Prepaid): +65-8369-2618
Street: Bedok Reservoir Road
Country: Singapore

On Sun, Nov 8, 2009 at 9:50 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
On Sun, Nov 08, 2009 at 07:45:01PM +0800, Mr. Teo En Ming (Zhang Enming) wrote:
>    Hi,
>    I have observed that there is a maximum limit to the number of PV or HVM
>    virtual machines you can start before dom0 hangs or crashes.
>    For Fedora 11 Linux x86-64 PV guests, dom0 will crash when I start the 7th
>    instance. Max I can start is 6 without crashing.
>    For CentOS 5.2 Linux x86-64 HVM guests, dom0 will crash when I start the
>    4th instance. Max I can start is 3 without crashing.
>    I have 6 GB of DDR2-800 with Intel Pentium Dual Core E6300 2.8 GHz on
>    Intel DQ45CB motherboard.
>    Are the above limits reasonable considering the hardware specifications of
>    my computer?
>    I am using Xen 3.5-unstable changeset 20143 with pv-ops dom0 kernels
>    2.6.30-rc3, 2.6.31-rc6,,, and My host
>    operating system is Fedora 11 Linux x86-64.

Dom0 or Xen shouldn't crash for starting guests.
Sounds like a bug somewhere.

Any errors/tracebacks? Do you have serial console configured?

-- Pasi

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