The timer.c is very interesting reading indeed. I am tempted to hack the timeout facility and bump the slot length to 1μs and see what it does (besides breaking all time-related APIs 
). My guess is that the timer wheel would introduce quite some load on the CPU compared to 1ms slots but I might be wrong.
I have no need for ns precision. Tens of microseconds are fine for my case. Stepping down to milliseconds would, however, introduce an inherent throughput issue as timeouts are part of nearly every operation within the app.
Again, many thanks for great pointers!
