From the NannyMUD documentation

LAST CHANGE

2008-07-08

FUNCTION

NAME
        _reset_cost - Get the cpu used for an object.


SYNTAX
        int _reset_cost()

DESCRIPTION
        This efun returns the number of eval nodes used by the
        code so far since the last call_other().
        
        When used from the master object (/obj/master), this efun
        resets the eval-cost so far. If used from any other object,
        it does not.


SEE ALSO
        _object_memory in efun/object_related/_object_memory


SEE ALSO
        _object_stat in efun/object_related/_object_stat