Memory is another important component of system performance. All files and data that are currently being used are kept in the system main memory for faster access. The CPU performance also depends on the availability of enough memory. Swap, on the other hand, is an extension to main memory. Swap is part of persistent storage, such as hard drives or solid state drives. It is utilized only when the system is low on main memory.
In this chapter, we will learn how to monitor system memory and swap utilization.
You may need
sudo privileges for some commands.
In the last recipe, we used commands
vmstat to monitor CPU utilization. These commands also provided details of memory usage. Let's start ...