Performance isolation
Have you used virtual machines? Than you know that you can restrict how much CPU time and memory they can consume. But who talks about disk I/O? Today, virtual machines can suffocate their neighbours and the host OS by congesting the disk. You can do something about it.
It's not only the competition for I/O resources between virtual machines and host operating system that makes it important to limit the among of I/O that each can perform. It is also interesting for "normal" processes. You could protect your interactive tasks (such as auto-saving in your office application) from the disk load created by a starting application or from the swapping generated by a large program that runs in the background.
For more information please contact Pål Halvorsen
