Xen community announced on March the release of its new stable Xen 4.1 release. Xen is a virtual machine monitor that supports execution of multiple guest operating systems with unprecedented levels of performance and resource isolation. Xen is Open Source software, released under the terms of the GNU General Public License.
With the recent release of Xen 4.1 the Xen community has delivered the world's most advanced hypervisor, which serves as an open source industry standard for virtualization. Xen supports a wide range of architectures, from Intel Itanium to Power PC and industry standard x86 servers and clients.
The new release of Xen supports the following features:
- A re-architected XL toolstack that is functionally nearly equivalent to XM/XEND
- Prototype credit2 scheduler designed for latency-sensitive workloads and very large systems
- CPU Pools for advanced partitioning
- Support for large systems (>255 processors and 1GB/2MB super page support)
- Support for x86 Advanced Vector eXtension (AVX)
- New Memory Access API enabling integration of 3rd party security solutions into Xen virtualized environments
- Even better stability through our new automated regression tests
Source: http://blog.xen.org/index.php/2011/03/25/xen-4-1-releases/
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