[CentOS-virt] Mixed dom0/domU usage?

Wed Feb 4 09:03:36 UTC 2009
Dennis J. <dennisml at conversis.de>

I'm wondering about the impact of using both dom0 and domU's on a server at 
the same time. I'm worried about the performance impact of running a Mysql 
server in a domU and now I'm thinking about moving the Mysql part of a LAMP 
setup into dom0 and running a few Apache guests as domUs. Since the Apaches 
will serve mostly from an NFS share they won't have much impact on the disk 
i/o so the database should be able to utilize the local storage without 
much interference from the guests. The plan is to limit dom0 to let's say 
4gb of ram and then use the rest of it for the VMs.

Has anyone experinece with this kind of "mixed" setup (physical/virtual). 
Are there any known problems with this approach?