[mythtv-users] How much RAM for a 'Xen' backend-only virtual server

[Gordon McLellan]

Thomas,

I agree that if you are going to virtualize, you have to go all the
way with it.   I guess I need more information about what other tasks
the OP's server is performing before jumping to the conclusion that a
DomU just for myth is not needed.

My box is running between six and eight DomU's at any given time.
Some of them are LAMP servers for friends, development machines for
myself, as well as having one machine that handles my network
services, one that runs an Astaro firewall, and a couple odd Windows
machines I boot from time to time.  I had virtualized myth in the
hopes that when its storage crashed, rebooting the virtual machine
would be easier, but alas, the crash finds its way into Dom0 and takes
everything down with it.

Gordon


On Mon, May 5, 2008 at 1:19 PM, Thomas Fjellstrom <tfjellstrom at shaw.ca> wrote:
>
>  As to why you might want the backend in a DomU, well any cpu use on the host
>  kernel will lag out the IO on the guests. With Xen you really _want_ to put
>  as much as possible into VMs, and leave the Dom0 as empty as possible.
>