HVM vs PV is confusing because as Xen improves the performance characteristics of the two modes change. Brenden Gregg covered the differences in quite some deta

HVM vs PV is confusing because as Xen improves the performance characteristics of the two modes change. Brenden Gregg covered the differences in quite some detail in a recent blog post [1]. Basically, if you are running a new enough kernel on the guest os you will get better performance from HVM. [1]: http://www.brendangregg.com/blog/2014-05-07/what-color-is-your-xen.html http://www.brendangregg.com/blog/2014-05-07/what-color-is-yo...