Computer performance metrics (things to measure) include availability, response time, channel capacity, latency, completion time, service time, bandwidth, throughput, relative efficiency, scalability, performance per watt, compression ratio, instruction path length and speed up.
Computer performance characteristics include factors such as uptime, processing efficiency, data transmission speeds, system responsiveness, task completion times, service delivery, information throughput, operational effectiveness, flexibility, energy consumption, data compression, and the length of complex instructions being executed.