I am running 3 Virtual Machines under KVM in Ubuntu 11.10. I have read some info on how to optimize the kernel of the Host for Virtualization, that's ok for me, but I need to compile a custom kernel for all VMs (for specific configurations for my work), and would like to know what options should I include or not include for better perfomance.
By Example: 1) what about the CPU configuration? /proc/cpuinfo tells me that my model of cpu is QEMU Virtual CPU version 0.14.1 should I use the configuration of the PC?
2) Networking
3) Specific Hardware
4) Anything else that could make my VMs lighter and faster
Additional info: two of my VMs works basically as webservers and the other as a load-balancer.