Monthly Archives: November 2009

Xen Orchestra 0.7 Available

Xen Orchestra 0.7 is now available at .


The new project is an entire code rewrite based on community feedback and the interface is web 2.0.  If you are interested in being a beta tester or evaluating this solution with your hardware please contact the project leader – Olivier LAMBERT at

The code is available at

USB Supported Device Page on Xen Wiki

Xen Community:

At the recent Xen Summit Asia event Noboru Iwamatsu from Fujitsu listed a collection of USB devices that he has tested with Xen for USB Pasthru. To assist everyone in the community in finding previously tested devices, I have created a new page on the Wiki -

Please add any USB devices that you have tested (success or failure) to this page so we can begin creating a list of devices.  Noboru will be adding his devices from his presentation over the next few days but I wanted to make everyone aware of this new wiki page.

Call for papers – Second Workshop on I/O Virtualization (WIOV ’10)

Over the last decade the use of virtualization technology has grown rapidly. Moreover, it is being used in a variety of places, ranging from the data center to the desktop. Although this has spurred great advances in processor and memory virtualization in commodity hardware and virtualization software, I/O virtualization has received far less attention. However, both personal computers and servers may perform significant amounts of I/O. For example, efficient virtualization of graphics hardware has presented significant challenges on the desktop and efficient virtualization of network interfaces has limited server consolidation in the data center.

Following on the success of the First Workshop on I/O Virtualization (WIOV ’08), this one-day workshop is again meant to provide a forum to discuss the challenges of I/O virtualization that cut across the virtual machine monitor, guest operating system, processor, memory subsystem, and I/O subsystem. In that spirit, we welcome papers that describe new challenges in I/O virtualization, papers that describe novel approaches to solving known problems in I/O virtualization, and papers describing real world experiences in the area of I/O virtualization. The final program will consist of both reviewed submissions and invited talks. The invited talks will focus on open problems in I/O virtualization and be accessible to a broad audience.

Topics of interest include (but are not limited to):

* Networking, storage, graphics, and any other form of I/O

* Hardware support for I/O virtualization

* Novel I/O device architectures for virtualization

* Novel software approaches to I/O virtualization

* Software methods for I/O device emulation

* Para-virtualized I/O device driver design for virtualization

* Virtual machine monitors I/O subsystems

Submission Guidelines:

Please submit short papers of no more than 5 pages using 10pt or larger fonts (figures and references are not included in this 5 page limit). Further submission instructions will be available at

Important Dates:

Submission due: January 22nd, 2010

Notification to authors: February 18th, 2010

Camera ready copy due: March 4th, 2010

Xen Summit Asia 2009 Overview

I have successfully navigated my way home from Shanghai, China and have lots to tell about the amazing Xen Summit Asia event at Intel. To help you get a feel for the size of the crowd here is a short clip of people waiting to complete their registration:

This was the largest Xen Summit event for with speakers from 5 countries (3 continents). Xen Summit also featured 2 keynote presentations from influential Chinese virtualization researchers and open source leaders. The event presentations highlighted the substantial technical vision and capabilities of the community. All event presentations in pdf format along with videos of those presentations are available here; NOTE – I am still obtaining final presentation copies and videos from Intel so expect the page to be updated over this week.

I recommend that you view as many of the presentations as possible and thought I would highlight a few of the topics presented:

* Ian Pratt – Xen Community Update
* Keir Fraser – Xen 4.0 Project Update
* Jun Nakajima – Optimizing and Enhancing VM for Cloud Computing
* Jeremy Fitzhardinge – PVOps Dom0
* Jun Kamada – Evaluation and Improvements of I/O Scalability
* George Dunlap – Xen Scheduler – Formal Abstract
* Chuck Yoo – Real Time Support for Xen

Here is a short video of the event room as people were waiting for the initial Day 1 welcome from Bob Liang.

I would like to personally thank the Intel team in China for their great assistance in putting on this event and for Citrix China for their additional sponsorship support. I would also like to thank the community members in China, Japan, and Korea for their great contributions and support of Xen.