Monitoring memory usage is a critical task for any system administrator. In Solaris 10, there are a number of tools that can be used to check memory usage, including the ‘vmstat’ and ‘pmap’ commands. The ‘vmstat’ command provides a summary of memory usage, including the amount of free and used memory, as well as the amount of memory that is being used by the kernel and by user processes. The ‘pmap’ command can be used to display a detailed map of memory usage, showing which processes are using memory and how much memory they are using.
Checking memory usage is important because it can help you to identify potential problems. For example, if you see that your system is running low on memory, you may need to add more memory to the system or take steps to reduce the amount of memory that is being used. Checking memory usage can also help you to identify processes that are using excessive amounts of memory, which can be a sign of a problem with the process or with the system itself.