Re: [Xen-users] Best practice for Dom0

["M.A. Williamson" <maw48@xxxxxxxxx>]

> - Does it prefer that i use Dom 0 only for Xen Hypervisor ?
Dom0 doesn't run the hypervisor, it runs *on* the hypervisor; the only 
difference from other domains is that it's allowed to access your network, 
disk, graphics devices directly.
But it's good practice not to run unnecessary services in dom0 - put them 
in domUs instead. Dom0 has root-equivalent privileges on every domU on the 
machine.
> - If yes, how much ram i need to reserv for Dom0  ?
I think 128Meg is solid for a lot of people, but it varies depending on if 
you're doing RAM-intensive things in dom0.
> - Are there a link between amount of ram in Dom0 and number of virtual
> machine run on this computer ?
The more RAM you give to dom0, the less RAM is available for other domains. 
RAM for domUs comes from the host system, not from dom0.
Cheers,
Mark

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