CentOS is a very popular Enterprise-class Linux Distribution derived from sources freely provided to the public by a well known North American Enterprise Linux vendor. CentOS continues to gain popularity as Windows administrators move to Linux to save money and for the performance gains.
A new feature implemented in CentOS 6 are control groups which are provided by the kernel. Control groups or cgroups, provide a way to control resources used on the system like CPU, memory, bandwidth and other resources. The use of cgroups will allow an administrator to provide precise control over the allocation, prioritizing, monitoring and managing of resources on the server.