Any tool other than Valgrind to monitor memory usage for running processes on Linux?

Question

This answer to this question says that there is no way to bind Valgrind to an already running process.
Are there any other Linux tools that can report memory usage but can connect to an already running process?

Answer 1

You can use tools like pmapor ps_mem.py to get more detailed information about using executable processes in memory than you get from top. You will not get all the attractive features from Valgrind, such as detecting memory leaks, etc.

Answer 2

All application data must be in

/proc/<PID>/