[ Thanks to Lee
Schlesinger for this link. ]
“Control groups, or cgroups, is a kernel feature designed to
aggregate tasks to allow for hierarchical resource management and
allocation. While control groups have been in the Linux kernel for
a few years, their implementation in CentOS appears for the first
time in the recently released version 6. Here’s how you can take
advantage of control groups to improve your systems’
efficiency.“In cgroups terminology, every system resource – CPU,
memory, disk input/output, bandwidth – is called a subsystem
or resource controller. We’ll use subsystem, but if you think
“resource controller,” you’ll have the right idea – they
literally control the system’s resources.”