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

[Moi meme <storm66@xxxxxxxxxxxxxxxx>]

Hello,

The maximum is a direct function of the available memory, every new
machine "eats" some memory and when there is no more memory ......
I had some servers (64bits, 2 quad core and 32Gb Ram) running 19 VM,
2003 server, 2000 Server,Fedora, Debian all in 32bits.
In my own system I have tested with upto 10 VMs of 512M each without
breaking the system.

Regards

JP Pozzi

Le dimanche 08 novembre 2009 Ã 19:45 +0800, Mr. Teo En Ming (Zhang
Enming) a Ãcrit :
> 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, 2.6.31.1, 2.6.31.4, and 2.6.31.5. 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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