Whoisnext, check this:
Rates Tutorial
Rates Calculator
Also, sv_mincmdrate and sv_maxcmdrate are for Source servers (CSS:S and later), not GoldSource (CS 1.6/CZ)
"cmdrate" on 1.6 is client side only.
Having those on server.cfg does nothing.
Like ex_interp or any other cl_commands are client side only, so, having this too on server.cfg does nothing and dont force nothing on players.
If you want all players to play at a fixed rate you should use min and max commands at the same value.
EX:
You want players to play with rate 100000.
You will set in server.cfg >
sv_maxrate 100000
sv_minrate 100000
NOTE that not everyone may have a decent connection capable of supporting high rates.