jonesy16 writes "Only a few weeks behind the release of Red Hat Enterprise 5, CentOS announced today the immediate release of version 5 of the free derivative of RHEL 5. Torrents are available for both i386 and x86_64. New features include compiz and AIGLX support as well as better virtualization and thin-client support. Package updates include Apache-2.2, kernel-2.6.18, Gnome-2.16, and KDE-3.5."

czei writes "This just-released research report, Load Testing a Virtual Web Application, looks at the effects of virtualization on a typical ASP Web application, using VMWare on Linux to host a Windows OS and IIS web server. While virtualizing the server made it easier to manage, the number of users the virtualized Web app could handle dropped by 43%. The article also shows interesting graphs of how hyper-threading affected the performance of IIS." The report urges readers to take this research as a data point. No optimization was done on host or guest OS parameters.

An anonymous reader writes "To debug the FreeBSD kernel core dump efficiently, it is best to set up a remote debugging session between a development machine and the target machine, and remotely debug the kernel using serial communication. This article shows you how you can debug as many kernel images as you want; it becomes transparent to users once debugging starts, and your system's performance is not affected at all."

An anonymous reader writes "Vendors and magazines are all over virtualization like a rash, like it is the Saviour for IT-kind. Not always, writes analyst Andi Mann in Computerworld." I've found that when it works, it's really cool, but it does add a layer of complexity that wasn't there before. Then again, having a disk image be a 'machine' is amazingly useful sometimes.

coondoggie sends us a NetworkWorld story on the prospects for Apple gaining market share in the corporation. A number of factors are helping to catch the eye of those responsible for upgrading desktops and servers, the article claims: "Apple's shift to the Intel architecture; the inclusion of infrastructure and interoperability hooks, such as directory services, in the Mac OS X Server; dual-boot capabilities; clustering and storage technology; third-party virtualization software; and comparison shopping, which is being fostered by migration costs and hardware overhauls associated with Microsoft's Vista." On this last point, one network admin is quoted: "The changes in Vista are significant enough that we think we can absorb the change going to Macs just as easily as going to Vista."

An anonymous reader writes "VMWare released a white paper detailing its concerns with license changes on Microsoft software that may limit the ability to move virtual-machine software around data centers to automate the management of computing work. Two choice quotes: '"Microsoft is looking for any way it can to gain the upper hand," said Diane Greene, the president of VMware.' And, '"This seems to be a far more subtle, informed and polished form of competitive aggression than we've seen from Microsoft in the past," said Andrew I. Gavil, a law professor at Howard University. "And Microsoft has no obligation to facilitate a competitor."'"

Rob writes in with an article from CBROnline based on an interview with Microsoft's UK server director. He says the timing of the release of the next version of Microsoft's server OS, dubbed Longhorn, depends on the company getting virtualization ready to go. Microsoft has apparently decided to embed its hypervisor technology into Windows, an OS-centric approach to virtualization shared by XenSource Inc., its open-source rival and partner. This contrasts with the model of virtualizing the hardware layer being pursued by VMWare. The Microsoft spokesman is coy about a release date for Longhorn, saying it could be earlier or it could be later (but it should be in 2007).

Watt's up writes "A new study shows an alarming increase in server power consumption over the past five years. In the US, servers (including cooling equipment) consumes 1.2% of all the electricity in 2005, up from 0.6% in 2000. The trend is similar worldwide. 'If current trends continue, server electricity usage will jump 40 percent by 2010, driven in part by the rise of cheap blade servers, which increase overall power use faster than larger ones. Virtualization and consolidation of servers will work against this trend, though, and it's difficult to predict what will happen as data centers increasingly standardize on power-efficient chips." We also had a recent discussion of power consumption in consumer PCs that you might find interesting.

seriouslywtf writes in with a look at the current state of the question: will people eventually be able to run Mac OS X in a virtual machine, either on the Mac or under Windows? Ars Technica has articles outlining the positions of two VM vendors, Parallels and VMWare. Both have told Ars unequivocally that they won't enable users to virtualize OS X until Apple explicitly gives them the thumbs up. First, Parallels: "'We won't enable this kind of functionality until Apple gives their blessing for a few reasons,' Rudolph told Ars. 'First, we're concerned about our users — we are never going to encourage illegal activity that could open our users up to compromised machines or any sort of legal action. This is the same reason why we always insist on using a fully-licensed, genuine copy of Windows in a virtual machine — it's safer, more stable, fully supported, and completely legal.'" And from VMWare: "'We're very interested in running Mac OS X in a virtual machine because it opens up a ton of interesting use cases, but until Apple changes its licensing policy, we prefer to not speculate about running Mac OS X in a virtualized environment,' Krishnamurti added."

Gr8Apes writes "AMD has showcased their new 65nm Barcelona quad-core CPU. It is labeled a quad-core Opteron, but according to Infoworld's Tom Yeager, is really a redefinition of x86. Each core has a new vector math processing unit (SSE128), separate integer and floating point schedulers, and new nested paging tables (to vastly improve hardware virtualization). According to AMD, the new vector math units alone should improve floating point operation by 80%. Some analysts are skeptical, waiting for benchmarks. Will AMD dethrone Intel again? Only time will tell."

An anonymous reader writes "Mac users wanting to run Vista on their Macintosh, alongside Mac OS X programs, will have to buy an expensive version of Vista if they want to legally install it on their systems. The end-user license agreement for the cheaper versions of Vista (Home Basic and Home Premium) explicitly forbids the use of those versions on virtual machines (i.e., Macs pretending to be PCs)." Update: 02/08 17:50 GMT by KD : A number of readers have pointed out that the Vista EULA does not forbid installing it via Apple's Bootcamp; that is, the "tax" only applies to running Vista under virtualization.

diegocgteleline.es writes "After two months of development, Linux 2.6.20 has been released. This release includes two different virtualization implementations: KVM: full-virtualization capabilities using Intel/AMD virtualization extensions and a paravirtualization implementation usable by different hypervisors. Additionally, 2.6.20 includes PS3 support, a fault injection debugging feature, UDP-lite support, better per-process IO accounting, relative atime, relocatable x86 kernel, some x86 microoptimizations, lockless radix-tree readside, shared pagetables for hugetbl, and many other things. Read the list of changes for more details."

snoukka writes "I just bought a new HP nx9420 laptop in order to use it with Linux, XEN, and windows on XEN. I was very disappointed when I noticed that the processor had this feature but VT is disabled in BIOS by HP and cannot be enabled! Disabled!? It's like buying a car with turbo and finding out after buying it that this turbo 'feature' was disabled." The forum thread goes back to last August and is still live. The latest post from an HP rep indicates that new firmware for the nx9420 should be available later this week in which the ability to switch on VT is enabled. It's not clear whether other HP products, in which VT was also disabled, will also get new firmware.

paltemalte writes to tell us that VirtualBox has gone open source. InnoTek released their virtualization product as open source and launched virtualbox.org to help cultivate the community and allow further development of the software.

mcalwell writes with an article about the Kernel-based Virtual Machine (or KVM for short) in the release candidate Linux 2.6.20 kernel. From the article: "[T]he Linux 2.6.20 kernel will include a full virtualization (not para-virtualization) solution. [KVM] is a GPL software project that has been developed and sponsored by Qumranet. In this article we are offering a brief overview of the KVM for Linux as well as offering up in-house performance numbers as we compare KVM to other virtualization solutions such as QEMU Accelerator and Xen."

IndioMan writes to point us to an overview of virtualization — its history, an analysis of the techniques used over the years, and a survey of Linux virtualization projects. From the article: "Virtualization is the new big thing, if 'new' can include something over four decades old. It has been used historically in a number of contexts, but a primary focus now is in the virtualization of servers and operating systems. Much like Linux, virtualization provides many options for performance, portability, and flexibility."

It looks like the newest version of the Linux kernel (2.6.20) will include KVM, the relatively new virtualization environment. From the article: "Thanks to its approach KVM already runs in the current kernel, without any extensive bouts of patching and compiling being required, after the fairly simple compilation of a module. Virtual machines that run unmodified operating systems are meant to appear in the host as a simple process and work independently of the host kernel. In a fashion comparable to that of Xen a modified QEMU is used for the supportive emulation of typical PC components of the virtual machines."

Verunks writes "Parallels has released a new beta of its virtualization product for Mac OS X. This new release includes one major new feature, something Parallels calls Coherency: "Shows Windows applications as if they were Mac ones. Try it and enjoy best of both worlds truly at the same time. No more switching between Windows to Mac OS." Check out this Screenshot" More interesting to me is the Boot Camp support so you can have a single partition to run IE7 in Parallels to test compatibility of a website but reboot to play video games that need a little more juice.

davidmcg writes "Finally, Microsoft has made steps to make testing IE6 and IE7 easier for Windows users. Previously, you had to pay for an additional Windows license to legally run both versions of IE for testing purposes. Now Microsoft is making available free Windows XP/IE6 images available for VirtualPC (also free as MS is competing with VMWare). This means that you can run IE6 in a virtual machine while running IE7 on your host machine. The drawback is that the download is set to expire April 2007 ... although we are promised new versions will be released. What Microsoft doesn't mention is that Virtual PC also runs on Windows 2000 (and IE7 doesn't). Therefore it's possible to install this Windows XP VPC image on your Win2k machine. You can then update IE6 on the XP image to IE7, testing IE7 without upgrading from Win2k. This is all-around excellent news for web developers."

raffe writes "Here is a Q&A with Ron Hovsepian CEO of Novell. He describes 'a love-hate thing' between the two companies." From the article: "This past May, I picked up the phone and called Kevin Turner, the COO at Microsoft. I knew Kevin when he was the CIO at Wal-Mart. I said, "Kevin, I'd like to have a conversation about what the customer needs. If you could put back on your old hat as a customer, if I came in and started talking to you about virtualization on Linux, and this Microsoft guy showed up and started talking to you about virtualization on Windows, what would you say to us?""