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[News] Linux Virtualisation Moves Across CPUs

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Redhat and AMD migrate VMs across CPUs

,----[ Quote ]
| AMD AND REDHAT have just done the so called impossible, and demonstrated VM 
| live migration across CPU architectures. Not only that, they have 
| demonstrated it across CPU vendors, potentially commoditising server 
| processors. Eeek!   



Red Hat sprints past ESX on VM running

,----[ Quote ]
| Red Hat claims it can run five virtual machines (VMs) for every three that
| VMware's ESX runs in the same server hardware. Qumranet technology also
| enables it to run more Windows virtual desktops than VMware, too.
| At a journalists' roundtable in London this week, Benny Schneider, Qumranet
| CEO, said his - now Red Hat's - company's KVM (kernel-based virtualisation
| machine) hypervisor runs 52 VMs in a physical server, in which ESX can host a
| maximum of 35 VMs. Citrix Xenserver is worse: it can only host 30.


Red Hat acquires Qumranet

,----[ Quote ]
| Red Hat Inc has acquired Qumranet Inc, the makers of SolidIce. The
| acquisition of Israel-based company adds a virtual desktop infrastructure
| (VDI) product to Red Hat's product portfolio. Red Hat paid $107 million for
| Qumranet. Qumranet's SolidICE product provides a kernel based virtual machine
| based around the open source KVM project which they also sponsor. The KVM
| project has been incorporated into the mainstream Linux kernel since version
| 2.6.20.


Hypervisor Visionary

,----[ Quote ]
| Benny Schnaider is a man who figures to have some influence in how
| competition in the virtualization market plays out. Schnaider is the CEO and
| co-founder of Sunnyvale, Ca.-based Qumranet Inc., which is the sponsor of the
| Kernel-based Virtual Machine (KVM) technology. KVM is an open source
| alternative to the Xen hypervisor, which recently became an approved
| component of the Linux kernel.
| Endorsed by Red Hat Inc. and Canonical Ltd.'s Ubuntu -- as well as supported
| in hardware by Intel Corp., Advanced Micro Devices Inc. and IBM Corp. -- KVM
| handles both Linux and Windows guest operating systems without preference.


KVM backer takes virtual desktops on the road

,----[ Quote ]
| Qumranet, the well-moneyed entity behind KVM, is asking folks to help it test
| out some new desktop virtualization code that sends applications out from
| headquarters to remote offices.


Red Hat announces embedded Linux hypervisor

,----[ Quote ]
| The Embedded Linux Hypervisor is founded on the Kernel-Based Virtual Machine
| (KVM) project, which has been integrated into the Linux kernel since 2006.
| Red Hat has claimed KVM supports live migration of virtual machines from
| system to system in real-time and also has high availability features.


Ubuntu 8.04 KVM Benchmarks

,----[ Quote ]
| With these few single threaded tests, the results were very close between
| Ubuntu 8.04 and Ubuntu 8.04 running within a virtualized environment powered
| by KVM. In fact, to an end-user, the results between the two environments
| wouldn't even be noticeable.



Ubuntu picks KVM over Xen for virtualization

,----[ Quote ]
| KVM will be built into Ubuntu's next version, called Hardy Heron and due in
| April. "For the Hardy Heron release, we've really picked up the
| virtualization ball. Virtualization is making its way into data centers and
| onto developer workstations everywhere. Even 'regular' users are using it to
| run Ubuntu on Mac OS X all the time," Hansen said. "Virtualization has been
| on our agenda for a long time, but it became a top priority at UDS (Ubuntu
| Developer Summit) in November. We could see that demand for it was growing."      


The truth about KVM and Xen

,----[ Quote ]
| When the distros first shipped Xen, it was done mostly out of desperation.
| Virtualization was, and still is, the "hot" thing. Linux did not provide any
| native hypervisor capability. Most Linux developers didn't even really know
| that much about virtualization. Xen was a pretty easy to use purpose-built
| kernel that had a pretty good community. So we made the hasty decision to
| ship Xen instead of investing in making Linux a proper hypervisor.
| This decision has come back to haunt us now in the form of massive confusion.
| When people talk about Xen not being merged into Linux, I don't think they
| realize that Xen will never be merged into Linux. Xen will always be a
| separate, purpose-built kernel. There are patches to Linux that enable it to
| run well as a guest under Xen. These patches are likely to be merged in the
| future, but Xen will never been a part of the Linux kernel.
| [...]
| Looking at the rest of the industry, I'm surprised that other kernels haven't
| gone in the direction of Linux in terms of adding hypervisor support directly
| to the kernel.
| Why is Windows not good enough to act a hypervisor such that Microsoft had to
| write a new kernel from scratch (Hyper-V)?
| Why is Solaris not good enough to act as a hypervisor requiring Sun to ship
| Xen in xVM? Solaris is good enough to run enterprise workloads but not good
| enough to run a Windows VM? Really? Maybe :-)
| Forget about all of the "true hypervisor" FUD you may read. The real question
| to ask yourself is what is so wrong with these other kernels that they aren't
| capable of running virtual machines well and instead have to rely on a
| relatively young and untested microkernel to do their heavy lifting?

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