From the NannyMUD documentation

LAST CHANGE

2000-12-08

COMMAND

NAME
        Gauge - See how much CPU/time a command costs.


LOCATION
	Wizmod, module 'default'.

SYNTAX
	Gauge 

DESCRIPTION
	This command will report the CPU cost (in evaluated nodes) and the
	CPU time and system time, in milliseconds. The command itself costs
	1000 evaluated nodes or so.