Headroom and saturation points
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
know how much margin each component has.
Planned topics
- Headroom: unused capacity before the component degrades.
- Find saturation by load test: CPU, connections, I/O, locks, queue depth.
- Components saturate at different loads; the lowest headroom is the first bottleneck.
- Plan headroom for failure: if one node dies, can the rest cope?
Draft outline details
Demonstration
a table per component: current peak, tested limit, headroom percent, N-1 headroom.
Check your understanding
Which component limits the system?
Show answer
The one with the least headroom at the target load.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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