USE method
From EverybodyWiki Bios & Wiki
The Utilisation Saturation and Errors (USE) Method is a methodology for analysing the performance of any system. It directs the construction of a checklist, which for server analysis can be used for quickly identifying resource bottlenecks or errors. It can be summarised as: "for every resource, check utilisation, saturation, and errors", and is meant to be used early in a performance investigation, to identify systemic bottlenecks.
Terminology
- resource
- all physical (or software) functional components of the server (CPUs, disks, busses, OS limits...)
- utilisation
- the average time that the resource was busy servicing work
- saturation
- the degree to which the resource has extra work which it can't service, often queued
- errors
- the count of error events
External Links
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