[tracker1]

Agreed... while monitoring isn't everything, not just alerts, but a dashboard and reports can provide insights and early warnings before things start falling over.

A single 80% CPU spike isn't anything to worry about by itself... but if it is prolonged, frequent and accompanied with significant influence on p95/99 latency and response, it could be a critical warning that you need to either mitigate an issue or upgrade soon.

I would be more inclined to set limits on response latency, or other metrics that would be impactful to users as to what is tolerable, and use that as critical alert levels. The rest you can use reports on to get say hourly or half-hourly windows in terms of where performance hits are, what the top values were for latency in addition to p95/p99, etc.

[yansoki]

Thanks tracker...very insightful