Yesterday was the CentOS Dojo Antwerp 2013, where I delivered a talk about tuning Xen for better performance.
The event was very interesting, lots of talks specially oriented at system administrators, so the Xen.org team didn’t want to miss this great opportunity to speak about Xen, especially considering that, not long ago, the first packages of Xen for CentOS 6 were announced at FOSDEM. More info about the event can be found at the CentOS Dojo wiki page.