Performance Requirements Speed. Any human interface must quickly provide an initial response. Normal human tolerance is about 2 seconds. For Control Room operators this reduces to about 0.5 seconds. Changing panels with the current SCP interface has a normal response time of well under 1 second.
Functions provide some feedback that they are active.
Many functions are limited by SLCnet bandwidth or can saturate the network resulting in total system performance impacts. Local computer memory is fairly important. You want sufficient memory for buffers again to minimize network traffic. Performance on certain heavily loaded Feedback micros is sometimes a problem with user response times. Despite its apparent primitiveness from the contemporary viewpoint, this interface which combined a rapidly navigable set of panels with separate graphical and error message windows has proved surprisingly effective and durable.