the stats module keeps track of frequent iterative queries using
probabilistic sampling. the list includes subrequests.
it is useful for tracking over time, prefetching and anomaly reporting

this can coalesce sends/writes in future versions of libuv

this fixes an issue with libuv sometimes crashing with mismatching number
of descriptors with REUSEPORT

when the daemon starts in non-interactive mode, it creates a pipe in the ‘tty/<pid>’ which can be used to interact with it remotely - much wow

e.g. $ socat - UNIX-CONNECT:tty/38284