Optimizing XenServers and Hosts

I found this useful post about doing some optimizations for your Xen hosts and guests:

Link

Unfortunately, I had some trouble finding where to make the mods on the host.  The location you will need is /boot/extlinux.conf.  I think this may be the RedHat location...

Also, these lines are very long, and if you edit them with nano, for instance, you may screw up the file.  I did this once, and the machine would no longer boot.  You have been warned.  So use vi.  (Weren't you always looking for a good excuse to learn vi?)

I just added the kernel param to the 'xe' section.