It’s official — Xen is now live at Linode. It’s been a long road, almost four years in fact, but, with the help of our community, the most recent beta program has finally proven Xen to be ready for action.
What does Xen mean for you? Xen has less overhead compared to UML. Xen Linodes have 4 processors. They support kernel modules. They support 32 and 64 bit kernels. We’re running the latest Xen version (3.2.1) which means we can support paravirt_ops kernels (pv_ops), which means we can have kernels newer than 2.6.18 (which a lot of our competitors force you to use). In short, Linodes will be much, much faster under Xen.
From here on, all new host hardware will be deployed running Xen. New accounts should land on these machines, but there’s still a chance a new Linode will land on a UML host. If this happens, or you are already on a UML host and want to move over, just submit a ticket. However, it’s just a matter of time before all our machines are running on Xen — we’ll announce the upgrade schedule in the next few weeks.