Release: Xen Hypervisor version 4.2.0

Posted by virtualization.info Staff   |   Monday, September 17th, 2012   |  
Xen, just announced the release of Xen Hypervisor version 4.2.0
The first version of the product was developed by The University of Cambridge Computer Laboratory and it has been maintained as free software, licensed under the GNU General Public License (GPL). Xen is currently available for the IA-32, x86-64 and ARM computer architectures. It is used by many public cloud and hosting services.
Xen 4.2.0 is the result of 18 months of work on 300K lines of code of development effort, by 124 individuals from 43 organizations.
Among the new Features:
XL is now the default toolstack: Significant effort has gone in to the XL tool toolstack in this release and it is now feature complete and robust enough that we have made it the default. This toolstack can now replace xend in the majority of deployments, see XL vs Xend Feature Comparison. As well as improving XL the underlying libxl library has been significantly improved and supports the majority of the most common toolstack features. In addition the API has been declared stable which should make it even easier for external toolstack such as libvirt and XCP’s xapi to make full use of this functionality in the future.
Large Systems: Following on from the improvements made in 4.1 Xen now supports even larger systems, with up to 4095 host CPUs and up to 512 guest CPUs. In addition toolstack feature like the ability to automatically create a CPUPOOL per NUMA node and more intelligent placement of guest VCPUs on NUMA nodes have further improved the Xen experience on large systems. Other new features, such as multiple PCI segment support have also made a positive impact on such systems.
Improved security: The XSM/Flask subsystem has seen several enhancements, including improved support for disaggregated systems and a rewritten example policy which is clearer and simpler to modify to suit local requirements.
Documentation: The Xen documentation has been much improved, both the wiki. This is in no small part down to the success of the Xen Document Days so thanks to all who have taken part.


blog comments powered by Disqus


virtualization.info Newest articles
Release: Ubuntu 14.04 LTS

April 15th, 2014

Today Canonical announced the new Ubuntu Linux 14.04 LTS with a press release intriguingly focused on its role as an OpenStack platform.
This release, that will be available on…

VMware introduces vCloud Hybrid Service – Disaster Recovery

April 15th, 2014

VMware vCloud Hybrid Service (vCHS) is the VMware’s owned and operated public Infrastructure as a Service (IaaS) platform, launched in 2013 in the US and extended to Europe in February…

Paper: 3D Graphics for Virtual Desktops Smackdown

April 11th, 2014

PQR, a dutch technology company has released a paper titled:"3D Graphics for Virtual Desktops Smackdown". The paper which contains 139 pages is written by virtualization experts, Benny Tritsch, Ruben Spruijt,…

Microsoft releases preview of Microsoft Azure Automation

April 10th, 2014

Microsoft has announced the release of a preview of Azure Automation. Azure Automation provides an orchestration engine for use within Microsoft Azure. Azure Automation allows you to automate the creation,…

Release: Citrix XenClient 5.1

April 10th, 2014

Citrix has released version 5.1 of its client hypervisor XenClient. XenClient consists of two technologies, the XenClient, which is a type-1 client hypervisor running on selected hardware and the XenClient…

Release: Microsoft Virtual Machine Converter 2.0

April 10th, 2014

In October 2012 Microsoft released version 1.0 of its Virtual Machine Converter tool (MVMC) allowing the conversion of VMware based virtual machines (VM’s) to Hyper-V based VM’s and virtual hard…

Paper: What’s New in VMware vSphere 5.5 Networking

April 9th, 2014

VMware vSpere 5.5 was released in September 2013 and introduced a couple of improvements to the networking capabilities of the vSphere platform.
These enhancements could be resumed as follows:

More…

VMware announces Horizon 6, adding Server Based Computing as a solution

April 9th, 2014

VMware today announced the release of version 6 of its end user computing suite: Horizon.
Starting with this version VMware not only provides a Virtual Desktop Infrastructure (VDI) solution based…

VMware elects Paul Sagan in the board of directors

April 8th, 2014

Yesterday VMware announced that David Goulden, CEO of EMC Information Infrastructure and CFO of EMC, has left the board of directors.
Goulden will be replaced by Paul Sagan, former Akamai’s…

VMware announces Q1 vExperts 2014

April 2nd, 2014

VMware vExpert is the program, started in 2009, that “rewards” the individuals who has been recognized as active contributors of the community that rotates around the VMware ecosystem.
The program…

Red Hat releases beta of Enterprise Virtualization version 3.4

April 1st, 2014

Red Hat has released a beta for an upcoming release of Red Hat Enterprise Virtualization (RHEV) platform version 3.4. Red Hat Enterprise Virtualization (RHEV) is Red Hats virtualization platform based…

Release: VMware vCenter Log Insight 2.0-beta

March 27th, 2014

Log Insight is VMware’s product for log aggregation, management and analysis. Introduced in June 2013, Log Insight is kept updated with a fast pace in order to be competitive on…

Release: Citrix XenApp 7.5 and XenDesktop 7.5

March 26th, 2014

In January Citrix announced the upcoming 7.5 version of its Virtual Desktop Infrastructure (VDI) product XenDesktop and desktop and virtualization product XenApp. At that time especially the fact that the…

Amazon makes its WorkSpaces DaaS solution generally available

March 26th, 2014

In November last year, Amazon announced its Desktop as a Service (DaaS) solution WorkSpaces. WorkSpaces offers a fully managed Windows 7 experience running on top of Windows Server 2008. At…

 
Monthly Archive