Running Windows 2008 Server SP1 64bit on a VM. The guest has 4GB RAM installed. If I look at Task Manager, it tells me approx 3.5 GB physical memory is being used. I launched Perfmon and checked the following two counters (figures in brackets for average: i. Commited Bytes : 2.5 GB ii. Pages Output/Sec: 0 iii. Available Mbytes: 420 I'm confused :) According to the above, I'm not paging as the Commited Bytes is less than the available RAM. Pages Output/sec confirms this. But then why do I only have 400MB RAM spare? Shouldn't this be much more? To add to this, Task Manager says I have: Total: 4094 Cached: 2935 Free: 80 Could someone confirm the best counter to use to see whether I really am running low on memory? Was reading http://support.microsoft.com/kb/2160852

First question, what process use the memory ? and secondly, did you installed guest tool/driver (like vm tool)MCP | MCTS 70-236: Exchange Server 2007, Configuring Twitter - @yagmoth555 () Blog: http://www.jabea.net | http://blogs.technet.com/b/wikininjas/

you are probably best to ask in a forum for the VM platform first.

you are probably best to ask in a forum for the VM platform first.