Question

A system contains the following periodic tasks: T1 = (5, 1), T2 = (7, 1, 9), T3 = (10, 3), and
T4 = (35, 7).
a. If the first frame size constraint is ignored, what are the possible frame sizes?
b. Use the largest frame size you have found in part (a),

Answer 1

Answer on Question #53655, Engineering / Other

Task: A system contains the following periodic tasks: $T1 = (5, 1)$ , $T2 = (7, 1, 9)$ , $T3 = (10, 3)$ , and $T4 = (35, 7)$ .

a. If the first frame size constraint is ignored, what are the possible frame sizes?

Answer:

1. $f \geq \max(e_i), 1 \leq i \leq n$

This step is ignored, here.

2. $f$ divides at least one of the periods evenly:

$f\in \{2,5,7,10,14,35\}$

3. $2f - \operatorname{gdc}(f, p_i) \leq D_i, 1 \leq i \leq n$

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