I have a dedicated server with 4GB RAM running on Debian Squeeze. I created a KVM with 3GB RAM (also running Debian Squeeze) on this server. Debian in KVM is always using between 300 and 500MB RAM.
KVM process takes around 2GB when I start it but it rises continuously. After 3 weeks uptime KVM already takes 3.2GB RAM. What could be a reason for this? Can I do something to keep memory usage on a constant level?