fixedlatency
Fixed latency, also known as deterministic latency, is a property of a system in which the time from an input event to the corresponding output is guaranteed to stay within a fixed bound. The bound is typically independent of input value and system load, and the latency is predictable and repeatable. This is in contrast to systems with variable latency, where the delay can fluctuate and jitter can occur.
Fixed latency is a core requirement in hard real-time and safety-critical domains, such as industrial automation,
Achieving fixed latency typically involves deterministic design: time-triggered or fixed-priority scheduling, bounded processing times, fixed-size buffers,
Validation relies on worst-case analysis and measurement of the latency bound (worst-case latency) and jitter. Techniques
Trade-offs include potential inefficiency under light loads, increased design complexity, and higher cost due to reserved
See also deterministic systems, real-time scheduling, jitter, latency, time-triggered architecture, time-sensitive networking, RTOS, WCET.