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I am looking for a CPU (possibly other resources) chart (being continually drawn) where I can hover/click on any place in history (e.g. spike) and it shows me which processes were using which cores, e.g. at 17:57:05 most of CPU were using Firefox with 25% of core #1, 0% of core #2 (other processes following, at least few top ones).

Something similar to this:

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Have a look at the Prometheus/Grafana combination. Prometheus is for collecting data (and some visualisation), Grafana is for visualization + dashboards.

Installation and configuration can take a while, though.

The Munin monitoring tool is still in the ubuntu repositories, I think, but it only gives you plots (no drill-down information)

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