New version of Xen hypervisor arrives for the cloud and enterprise

Grazed from ZDNet.  Author: Steven J. Vaughan-Nichols.

Xen, one of the oldest open-source hypervisors, has long been popular with major cloud services such as Amazon Web Services, Rackspace Public Cloud, and Verizon Cloud. Now, with improved performance, quality, security and scalability that today’s cloud and enterprise data-center computing workloads demand.

In particular, for x86-based solutions this latest version offers improved cache monitoring technology. This, in turn, helps to resolve the "noisy neighbor" dilemma. A noisy neighbor is a virtual machine (VM), which demands more than its fair share of system resources thus slowing down other VMs.  The other significant new features and capabilities in Xen Project Hypervisor 4.5 include:…


Major performance enhancements: Xen now includes a new Project Hypervisor (PVH) bare-metal virtualization mode, which supports running as dom0 with Linux platforms on Intel CPUs. Dom0 is Xen’s first running operating system. You can think of it as the host operating system for Xen’s production virtual machines (VM)s…

Read more from the source @ http://www.zdnet.com/article/new-version-of-xen-hypervisor-arrives-for-the-cloud-and-enterprise/