[Feature request] Add possibility to see historic data

[BeayemX]

Sometimes when CPU spikes happen it would be nice to see what caused it.
If you miss the seconds where this data is available, you are out of luck.

It would be great if we could click any history graph to select a point in time to show the data at the time.

Additional thoughts

• maybe the scrolling of the graph should stop while a time selection is active
• I am not sure if data is even stored to make it possible
  • if not maybe make optional if it causes quite processing load?
• I am not sure if it should only be done for one category (CPU, Memory, ...) or if it should show the data for the specific time for each category, i.e. if you have a cpu spike you can also take a look at what application was using the most memory at the time

[ljuzig]

Currently data (like top processes) isn't mined when the menu is closed. Continuous data tracking is in the roadmap, but it requires a huge effort so it will take some time. That said, I'm not sure we'll be able to store top processes history data, I will take that into consideration, but it's not something that you can expect soon.