I've spent a lot of time searching, but haven't found any concrete (i.e. something I can give to a customer) details on GCC VM clock synchronization. My RHEL Vm's don't have ntp running, but I found a blog page that said the system clock in a VM is automatically synched - but can't find this in the actual GCC docs.
Is it in fact OK to not run ntp, or should I turn it on? If the answer is it's not needed, is there any place where this is definitively stated?