The Computer Measurement Group, commonly called CMG, is a not for profit, worldwide organization of data processing professionals committed to the measurement and management of computer systems. CMG members are primarily concerned with performance evaluation of existing systems to maximize performance (eg. response time, throughput, etc.) and with capacity management where planned enhancements to existing systems or the design of new systems are evaluated to find the necessary resources required to provide adequate performance at a reasonable cost. In telecommunication, response time is the time a system or functional unit takes to react to a given input. ... BUSINESS In the business management theory of constraints, throughput is the rate at which a system produces money, in contrast to output, which may be sold or stored in a warehouse. ...