1. The instrumentation for this was all developed for cpview. Not aware of another tool that uses it.
2. Not sure precisely which timers you’re looking for, but I believe some of them would impact tables on the gateway. You’d see them in the headers of the various tables they impact (e.g. connections). Otherwise, they’re all global properties settings on management. It would help to know precisely what you’re trying to achieve here (ie why is dumping all the timers “interesting”).
3. Only way I know is to look at the relevant log files to see if they are increasing. There is no global “hey, I’m in debug mode” indicator beyond that.