Queueing and utilization
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
explain why latency explodes near saturation.
Planned topics
- Utilization is busy time over total time; waiting time grows sharply as it nears 100%.
- Intuition: with random arrivals, bursts queue up and the queue drains slowly when there is little spare capacity.
- Rule of thumb: keep utilization well below saturation (often 60-70% for latency-sensitive paths; verify by test).
- Bounded queues and load shedding protect latency.
Draft outline details
Demonstration
a curve description: wait time flat at 50% utilization, doubling by 80%, exploding past 90%.
Check your understanding
Why not run a service at 95% utilization?
Show answer
Queueing delay grows steeply and tail latency becomes unpredictable.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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