ちょっとメモ．
- top: display Linux tasks
- apachetop: display real-time web server statistics
- atop: AT Computing’s System & Process Monitor
- mytop: display MySQL server performance info like `top'
- innotop: MySQL and InnoDB transaction/status monitor
- pg_top: display and update information about the top cpu PostgreSQL processes
- htop: interactive process viewer
- ntop: display top network users
- jnettop: View hosts/ports taking up the most network traffic