Mention Pressure metrics #4739
Description
What needs to be documented?
For all vendors, we are going to release Pressure metrics, alongside the existing Resource metrics (CPU, RAM, Disk ...)
What is Pressure?
Pressure indicates the percentage of time your app’s tasks were delayed due to resource contention. This means they needed CPU, memory, or disk access but had to wait because those resources were fully occupied.
For example, 6.8% pressure means that tasks were blocked from making progress for 6.8% of that period of time.
How to understand Pressure:
- High pressure suggests performance bottlenecks, even if resource usage looks fine.
- Low pressure with high resource usage suggests efficient resource allocation without noticeable delays, even if the resource is fully allocated
Additional context
Flowchart created by @ralt to clarify how to interpret, and act upon, high pressure.
