After running well for two months, my VM has suddenly slowed to a crawl. I
cannot identify the problem - can anyone suggest what to try or how to
I apologize if this is a double post. My first post did not seem to go
Platform = Intel dual core CPU and board supporting VT, 8 GB RAM, VPC 2007.
Host = Vista x64.
Guest = Win XP Pro x86, 2 GB RAM, with hardware virtualization enabled.
VHD = dynamically sized, max 64 GB, current 39 GB, on an independent
physical drive with 89 GB free space.
The Task Manager of the host typically reports 3-10% CPU usage.
The Task Manager of the guest reports 20-100% CPU usage. On the Processes
tab, the only usage is System Idle Process (80%), explorer.exe (10%), and the
Task Manager itself (10%).
I perform many installations and uninstallations on the VM, mostly new
builds of my customer's software. Except for that, I did not install software
or reconfigure the VM recently.
The problem is intermittent. The guest performance is occasionally good, but
usually slow. The host performs fine.
Defragmenting the guest did not help. I did not try defragging the host
because Vista runs a scheduled defrag every week.