Swap space is a portion of a computer’s hard disk that is used as virtual memory. When a computer runs out of physical memory (RAM), it can use swap space to store data that is not currently being used. This can help to improve the computer’s performance by reducing the amount of time that is spent swapping data between RAM and the hard disk.
There are several ways to check the size of the swap space on an AIX system. One way is to use the vmstat command. The vmstat command displays a variety of information about the system’s memory usage, including the size of the swap space. To use the vmstat command, type the following at a command prompt: