"Need to monitor Linux server performance? Try these built-in
command and a few add-on tools. Most Linux distributions are
equipped with tons of monitoring. These tools provide metrics which
can be used to get information about system activities. You can use
these tools to find the possible causes of a performance problem.
The commands discussed below are some of the most basic commands
when it comes to system analysis and debugging server issues such
as:
Finding out bottlenecks
Disk (storage) bottlenecks
CPU and memory bottlenecks.
Network bottlenecks."