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Linux as a Hypervisor

,----[ Quote ]
| I'm also pleased of how the 2.6.24 kernel of my Penryn laptop that suspends
| with s2ram automatically with acpid when I close the lid, and it consumes
| only 0.5watts until I open the lid again. It continues playing YouTube video
| and audio inside KVM whenever I open the lid with only a few lines of KVM
| being aware of the suspend and resume to disable vmx/svm mode while the CPU
| is suspended.
|
| I noticed that the design that requires the lowest effort to quickly reach
| equal or superior features usually wins the marketplace as it tends to be the
| most efficient and stable over time. I guess this is why we're not using IA64
| laptops just yet.
`----

http://www.linuxplanet.com/linuxplanet/reports/6503/1/


Recent:

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.
`----

http://news.zdnet.co.uk/software/0,1...9436036,00.htm


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.
`----

http://www.phoronix.com/scan.php?pag...nchmarks&num=1


Related:

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."
`----

http://www.news.com/8301-13580_3-986...=2547-1_3-0-20


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?
`----

http://blog.codemonkey.ws/2008/05/tr...m-and-xen.html


KVM and Xen cofounders engage in war of words

,----[ Quote ]
| Maybe, but Pratt was responding to his KVM’s competitors’ claims that Xen’s
| days are numbered because of KVM’s tight integration with the Linux kernel.
`----

http://blogs.zdnet.com/virtualization/?p=415
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