Quantitative Evaluation of Embedded Systems

1. Quantitative Evaluation of Embedded Systems Latency as a throughput constraint

2. Latency through periodic scheduling Toutput = 8ms Tinput = 34ms D S δ 34ms μ = 22ms

3. Adding a feedback loop L Periodic schedule is unchanged iff MCM is unchanged β α Toutput = 8ms Tinput = 34ms D S δ 34ms μ = 22ms

4. Latency as a throughput constraint βμ ≥ Toutput + Eoutput+ α – Tinput Delayed latency ≤ Toutput+ Eoutput– Tinput+ δμ≤ (β+δ)μ– α L β α D S δ ? μ = 22ms