CS:GO: how to show and hide ping and FPS?

In CS:GO, you can display and hide ping and FPS using console commands. To display information about ping and FPS, run the following command in the console:
net_graph 1

This command will display information about ping, FPS and other network connection parameters. To hide this information, run the following command:
net_graph 0

Note that the console commands are not case sensitive, i.e. net_graph 1 and net_graph 1 have the same meaning. Also remember that in order to execute console commands in CS:GO, you need to open the console by pressing the ~ (tilde) key. This key is located on the keyboard below the Esc key and to the right of the 1 key.