Blog of spblinux

Found in xen wiki a remark of Jeremy Fitzhardinge about the performance of Xen 4.0 (Xen Summit at Intel Shanghai Nov 19-20, 2009, Slide 7):

Performance still needs attention

• Seems to be ~10-20% hit vs 2.6.18-xen

… but you get a current 2.6.31/32/… Linux kernel.

Preparations to boot a Xen 4.0 dom0  kernel: 2.6.18-to-2.6.31-and-higher

Status of Xen features in Linux kernel: XenParavirtOps

Thanks to the detailed posts on http://bderzhavets.wordpress.com/ [A, B, C ] virt-manager is running xen 4.0 on ubuntu 10.04
(installation of ubuntu server plus apt-get install xubuntu-desktop).

Program virt-manager has to be started as root and switching with su to root shell does not work, the login version su – has to be used (to avoid error: Failed to contact configuration server).

To create a hvm virtual machine virt-install is used:

• virt-install -connect xen:/// -n ti2010 –r 512 –hvm –vnc -f /dev/sdb -c /root/mnt/ti2010.iso –debug –force

Parameter –force is only neccessary if the block device used as hard disk is already part of another vm.

Once the new vm gets displayed in virt-manager all properties of this vm can be edited (click ‘Open’; ‘Add Hardware’, ‘Remove’, …).