A recurring problem in real-time industrial devices is logging: you want to log all the information you need to diagnose a problem, but you don’t want to slow down your system and miss timing constraints, or unnecessarily burden your system when there are no problems. On the other hand, you often don’t know that there is a problem to be diagnosed (and therefore logged) before there is an actual problem, in which case you may be too late to start your logs.
The solution seems obvious: just look a minute or so into the future and, if any trouble is brewing, start logging. But as a wise person once said: “Always in motion the future is.”
In the real world, we need real solutions.
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