This can make a big difference, for instance, with databases.
This is actually quite powerful, because traditional tools (ps, analysis of /proc, etc.) have no way to find out the cache memory usage incurred by specific processes. Memory You can limit the amount of RAM and swap space that can be used by a group of processes.It accounts for the memory used by the processes for their private use (their Resident Set Size, or RSS), but also for the memory used for caching purposes.
