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Definition: response time

(1) The time it takes for a pixel to change color. See pixel response time.

(2) In an interactive session, response time is the time it takes for a local computer or remote server to respond with an answer or confirmation after the user presses Enter. In a session that requires multiple entries such as filling out an order form or answering a questionnaire, extremely fast response times are necessary. In a search on the Web, the response time can be a bit slower, but any results that take more than a couple seconds is considered mediocre. See Doherty threshold and real-time system.