I tried using VMWare with AMD-v

For using VMware with VT, We should use 64bit OS according to its document.
#I hoped it is same with AMD-v

So, I introduced 64bit CentOS and evaluate it by compiling xen.

Result is that performance improvement was only about 6%.
#I might have been not able to enable AMD-v :-+
#This improvement might have been difference between 32bit Linux and 64bit Linux