The valgrind tool is used to detect memory leaks and memory management problems in programs. When a process is suspected of having a memory leak because it progressively consumes more memory without freeing it, valgrind can be employed to analyze the process and identify where memory is not being appropriately released.

free is a command that displays the amount of free and used memory in the system but does not detect memory leaks in processes.

vmstat reports information about processes, memory, paging, block IO, traps, disks, and cpu activity, but does not specifically analyze memory leaks in individual processes.

mpstat is used to monitor CPU utilization but does not analyze memory leaks in a process.