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News and Information on Microsoft Products
Parent memory reserve with dynamic memory
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/03/parent-memory-reserve-with-dynamic-memory.aspx'; Most people I know who have spent a lot of time with Hyper-V have had the experience of accidentally taking too much memory away from the parent partition. This happens when they start too many virtual machines – and all of a sudden the performance and responsiveness of the... »
Guest Paging vs. Virtualization Paging and Negative Memory Availability
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/02/guest-paging-vs-virtualization-paging-and-negative-memory-availability.aspx'; Jeff has discussed this at some length over on the virtualization team blog, but as a general rule of thumb we believe that it is much better to have paging occur inside the guest operating system rather than at the virtualization layer (if paging is needed). The simple... »
Looking at Dynamic Memory Performance Counters
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/01/looking-at-dynamic-memory-performance-counters.aspx'; With Windows Server 2008 R2 SP1 we have added a number of new performance counters for dynamic memory. These counters allow you to get some extra insight into what is actually happening with memory on your Hyper-V server. The counters are grouped in two categories. First is “Hyper-V Dynamic... »
Update on Security Advisory 2269637
Hi everyone, Since we released Security Advisory 2269637 on August 23, we've continued to conduct an investigation not only into our own affected products, but also into how we can best help to protect customers given DLL preloading also affects some third-party applications. We'd like to provide an update on our investigation. First, I want to... »
What is “Memory Availability”? (as reported by Dynamic Memory)
When you use dynamic memory with Hyper-V one of the obvious changes to the user interface is the addition of the “Memory Availability” column: This is actually a really useful figure to have handy. What memory available represents is the ratio of how much memory a virtual machine has – compared to how much memory... »
Hyper-V Hotfix Rollup now Available
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/30/hyper-v-hotfix-rollup-now-available.aspx'; I am a bit late in getting this post up (due to being on the road at TechEd Australia & TechEd New Zealand); but last week we released a hotfix rollup package. This package includes the fixes for three of the five issues that I recently blogged about. ... »
Microsoft Security Advisory 2269637 Released
Overview Today we released Microsoft Security Advisory 2269637. This is different from other Microsoft Security Advisories because it's not talking about specific vulnerabilities in Microsoft products. Rather, this is our official guidance in response to security research that has outlined a new, remote vector for a well-known class of vulnerabilities, known as DLL preloading or... »
Heading Down-Under
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/19/heading-down-under.aspx'; I am sitting in an Airport as I write this post. I am currently on my way to Australia – where I will be speaking next week at TechEd Australia 2010. Then the following week I will be heading over to New Zealand for a repeat performance ... »
Using PowerShell to find the virtual processor to logical processor ratio of Hyper-V
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/13/using-powershell-to-find-the-virtual-processor-to-logical-processor-ratio-of-hyper-v.aspx'; For as long as I can remember – I have been talking to people about supported / optimal virtual processor to logical processor ratios with Hyper-V. Or – said with less technical jargon – how many virtual machines, with how many virtual processors, should you run on any given physical computer? ... »
What happens when you Sysprep a system running Hyper-V on Windows Server 2008 R2?
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/12/what-happens-when-you-sysprep-a-system-running-hyper-v-on-windows-server-2008-r2.aspx'; I got asked this question a couple of weeks ago – and I did not know the answer. After a bit of investigation – I now know the answer – and thought I would take the time to share it with the world (if you do not know what Sysprep is –... »
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