Release: Xen 4.0 – UPDATED

Posted by virtualization.info Staff   |   Monday, April 12th, 2010   |  

xen logo

During the weekend Xen.org finally released Xen 4.0.

It includes a number of very interesting features, even if they are definitively less than the ones listed in the proposed roadmap appeared in August 2009:

  • Fault Tolerance (live transactional synchronization of VM state between hosts)
  • Memory Overcommit (page sharing through the Transcendent Memory feature)
  • Support for live snapshots and clones through the new VHD implementation called Blktap2
  • Support for new Smart NICs with multi-queue and SR-IOV functionality through the network channel implementation called Netchannel2
  • Support for Para-virtualized USB and VGA pass-through
  • Support for Paravirt-ops in the Dom0 (with Linux kernel 2.6.31)
  • Support for up to 64 vCPUs per virtual machine
  • Support for up to 1TB RAM per host
  • Support for Intel Xeon 5600 Series CPUs (codename Westmere)

One significant omission is the integration with Open vSwitch, which launched in August 2009.
The thing is particularly strange considering that the distributed virtual switch is part of the Xen Cloud Platform (XCP), which is based on Xen.
Maybe the product is not yet solid enough, or it doesn’t have enough features, to be included in a mature release of Xen like this one.

Now, it’s just a matter to see how quickly the new engine will be implemented in XCP, Citrix XenServer, Novell SLES and Oracle VM Server, and what kind of additional features these companies will be able to build on top of Xen 4.0.

Update: Xen.org and Citrix reached out to clarify some points about this release, so virtualization.info is able to correct some statements above and add additional information about Xen 4.0.

First: the approach Xen.org has is to continue developing Xen as just a virtualization engine. Anything on top of it and around it should follow its own development. This is why including Open vSwitch in Xen doesn’t really make sense, while bundling it in XCP is more appropriated.

Second: the new features that Xen 4.0 offers will shortly appear in both XCP and Xen Hypervisor for Client Devices (XCI). They should appear in a couple of months or so.
Some of these features then will make their way into Citrix XenServer (which derives from XCP) and the upcoming Citrix XenClient (which derives from XCI). In the case of XenServer, the selected features may not appear before six months.

Third: the VGA pass-through capability is supported by some NVIDIA, ATI and Intel graphic cards, even if there’s not yet a specific list yet that users can check.

Fourth: at the moment Xen.org doesn’t to release any benchmark about Xen 4.0 (compared for example to Xen 3.x or other hypervisors) but such performance analysis may appear at the upcoming Xen Summit.


Labels: ,

blog comments powered by Disqus


virtualization.info Newest articles
Release: VMware vRealize Log Insight 4.5

June 13th, 2017

Log Insight is a log aggregation, management and analysis tool, that VMware first introduced in 2013 and considered a competitor of Splunk.
Yesterday VMware announced the release of version 4.5, available for…

Release: VMware vRealize Automation 7.3

June 6th, 2017

Today VMware announced the latest release of its cloud management platform vRealize Automation, former vCloud Automation Center.
VMware vRealize Automation 7.3 release notes can be found at this link.

The…

Paper: Introducing the NSX-T Platform

February 9th, 2017

“We see greater potential strategic opportunity in NSX over the next decade than our franchise product vSphere has had for the past decade.”
said VMware’s CEO Pat Gelsinger talking about…

Paper: VMware vSphere Virtual Machine Encryption Performance

November 22nd, 2016

Encryption of virtual machines is something that has been requested for years by the security community. VMware continued to postpone its implementation due to the negative operational impact that many…

Quest Software leaves Dell

November 1st, 2016

In September 2012 Dell announced to have completed the acquisition of Quest Software, a Californian company with an history in systems management, security, business intelligence and, falling back in our…

Citrix announces Q3 2016 results

October 21st, 2016

Citrix announced its financial results for third quarter 2016.
The revenues for the second quarter were $841 million for an increase of 3% compared to Q3 2015.
Net income was $132…

Release: VMware vSphere 6.5 & Virtual SAN 6.5

October 19th, 2016

2016 edition of VMworld US has been quite turbulent, on the other hand during VMworld Europe, happening these days in Barcelona, the company announced a few more products for the…

Release: VMware vRealize Log Insight 4.0

October 18th, 2016

Log Insight is a log aggregation, management and analisys tool, that VMware first introduced in 2013 and now is usually compared with Splunk.
Yesterday VMware announced Log Insight’s new major…

Release: Windows Server 2016 with support for Window Server & Hyper-V containers

October 13th, 2016

Yesterday Microsoft announced the general availability of Windows Server 2016 which the company defines as a cloud-ready OS.
Beside fancy definitions, one of the most relevant perks of this release…

Release: Oracle VM 3.4.2

September 22nd, 2016

During Oracle OpenWorld 2016 the company released version 3.4.2 of its enterprise virtualization solution.
Oracle VM is available for both x86 and SPARC based processor architectures and uses the Xen hypervisor…

VMworld US 2016 Wrap-up

September 1st, 2016

Today was the last day of VMware’s flagship conference VMworld in Las Vegas, an highly controversial edition which left a good chunk of the audience disoriented if not properly disappointed….

Gartner releases its Magic Quadrant for Cloud Infrastructure as a Service for 2016

August 11th, 2016

Last week Gartner updated its Magic Quadrant for Cloud Infrastructure as a Service (IaaS) for the year 2016. The Magic Quadrant for the year 2015 was released in May last year…

Release: Ansible Tower 3 by Red Hat

August 2nd, 2016

Ansible is one of the four main players in the automation market, younger then the well known Chef and Puppet, has been launched in 2013 in Durham, N.C. and acquired…

IBM announces earnings for Q2 2016

July 19th, 2016

Yesterday IBM announced its results for Q2 2016.

If we compare with the same quarter in 2015 earnings per share, from continuing operations, decreased 22%. Net income, from continuing operations,…

 
Monthly Archive