On 03/17/2010 02:15 PM, Hildebrand, Nils, 232 wrote: > Hi, > > just two questions: > 1. Is there anything faster than XEN-paravirtualization? > > 2. Why XEN 5? > XEN 3 is quite stable, too. > > I have 31 DomUs up and running on a single Box - and have a strong feeling that even 60 will run flawless. > But: All of them are Para-Virtualized. > > I have no problem with disk IO-Bottlenecks since my DomUs are not Database-Servers - so there is mostly static information in the filesystems. The term "paravirtualization" is becoming quite dated. Even if you install a KVM guest without that option if you choose the virtio driver inside then you still end up with "paravirtualized" I/O. With the advent of things like nested page tables and SR-IOV the "fully virtualized=slow, paravirtualized=way faster" logic is no longer necessarily true at least not for every aspect of the system. Regards, Dennis (Disclaimer: So far I'm running all my virtualized servers on Xen but use KVM exclusively at home. Eventually I plan to migrate to KVM on the servers too but at the moment I'm not in a hurry but that is not because i think KVM isn't up for the task but because there is no urgent need to do so.) _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos-virt