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[Xen-devel] Max. PV and HVM Guests

To: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Max. PV and HVM Guests
From: "Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>
Date: Sun, 8 Nov 2009 19:45:01 +0800
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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.

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
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