http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/02/22/378475.aspxThis is a question I get asked a fairly regularly. The scenario is that the user is running Virtual Server on a 4 processor physical computer and is confused as to why they can only assign 25% of CPU resource to a virtual machine. There are a couple ofen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/02/22/378475.aspx#378947Wed, 23 Feb 2005 16:33:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:378947Jason Huber's BlogYour right (as one would expect) and this is exactly what I needed. I can now rethink some of my Virtual Server Layout and get a little bit more from each virtual machine. <br> <br>Thanks again!<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=378947" width="1" height="1">http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/02/22/378475.aspx#378921Wed, 23 Feb 2005 16:09:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:378921Virtual PC GuyHi Jason, <br> <br>If you run more than one virtual machine under Virtual Server - you will use more than 50% total CPU resource. <br> <br>Cheers, <br>Ben<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=378921" width="1" height="1">http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/02/22/378475.aspx#378911Wed, 23 Feb 2005 15:56:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:378911Jason Huber's BlogI asked the original question. And THIS IS UNDER SERVER! <br> <br>Ben was so gracious to respond via email and then blog it. The blog was more concise than the several emails and I think my question is better answered here. Ben - you are a good man for helping out like this. <br> <br>I think it kinda stinks. I can solve the problem to 50% by disabling Hyperthreading, but as a previous commenter noted, I cannot use more than 1 logical processor on a dual processor machine (50% of total CPU). <br> <br>I was hoping that installing several instances of Virtual Server on the same machine would help- but I doubt that it is possible.<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=378911" width="1" height="1">http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/02/22/378475.aspx#378902Wed, 23 Feb 2005 15:46:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:378902Johan EricssonOK. This is Virtual PC... I guess this is just to make the Virtual Server package more attractive... <br>Thanks!<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=378902" width="1" height="1">http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/02/22/378475.aspx#378544Wed, 23 Feb 2005 03:34:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:378544Virtual PC GuyHi Johan, <br> <br>Are you running Virtual Server or Virtual PC? On Virtual PC all virtual machines are run on one physical CPU - but on Virtual Server they can be run on seperate CPUs. <br> <br>Cheers, <br>Ben<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=378544" width="1" height="1">http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/02/22/378475.aspx#378540Wed, 23 Feb 2005 03:26:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:378540Johan EricssonI notice that even multiple virtual machines utilize the same processor. So, even with 2 virtual machines, a 2 processor machine will only get 50% CPU busy... <br> <br>Why is this? Why can't each virtual machine get its own processor...<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=378540" width="1" height="1">