Xen 1.0 (stable) released

Xen is a virtual machine monitor for x86, which lets you run multiple
operating system images at the same time on the same PC hardware, with
unprecedented levels of performance and resource isolation. Even under
the most demanding workloads the performance overhead is just a few
percent: considerably less than alternatives such as VMware
Workstation and User Mode Linux. This makes Xen ideal for use in
providing secure virtual hosting, or even just for running multiple
OSes on a desktop machine. Home page: http://www.cl.cam.ac.uk/netos/xen

Xen requires guest operating systems to be ported to run over
it. Crucially, only the kernel needs to be ported, and all user-level
application binaries and libraries can run unmodified. We have a fully
functional port of Linux 2.4.22 running over Xen, and regularly use it
for running demanding applications like Apache, PostgreSQL and
Mozilla. Any Linux distribution should run unmodified over the ported
kernel. With assistance from Microsoft Research, we have a port of
Windows XP to Xen nearly complete, and are planning a FreeBSD 4.8 port
in the near future.

Xen is brought to you by the University of Cambridge Computer
Laboratory Systems Research Group. Visit the project homepage to find
out more, and download the project source code or the XenDemoCD, a
bootable `live iso' image that enables you to play with Xen/Linux 2.4
without needing to install it on your hard drive. The CD also contains
full source code, build tools, and benchmarks. Our SOSP paper gives an
overview of the design of Xen, and evaluates the performance against
other virtualization techniques.

Work on Xen is supported by UK EPSRC grant GR/S01894, Intel Research
Cambridge, and Microsoft Research Cambridge via an Embedded XP IFP
award.

Home page : http://www.cl.cam.ac.uk/netos/xen
SOSP paper : http://www.cl.cam.ac.uk/netos/papers/2003-xensosp.pdf

Posted by Ian Pratt 2003-10-01