Quantitative Evaluation of Embedded Systems

Latency as a throughput constraint

Latency through periodic scheduling

μ = 22ms

STinput = 34ms Toutput = 8ms

D34ms

δ

Adding a feedback loop

μ = 22ms

STinput = 34ms Toutput = 8ms

D34ms

L

δ

βα

Periodic schedule is unchangediff

MCM is unchanged

Latency as a throughput constraint

μ = 22ms

S D?

L

δ

βα

βμ ≥ Toutput + Eoutput + α – Tinput

Delayed latency ≤ Toutput + Eoutput – Tinput + δμ≤ (β+δ)μ – α