RPI3 swap experiments ["was killed: out of swap space" with: "v_free_count: 5439, v_inactive_count: 1"]

[John Kennedy]

On Sun, Aug 12, 2018 at 10:32:48AM -0700, John Kennedy wrote:
> ... Bob, are you doing anything clever to track/graph resources over time?
> ... Load seems lower than it normally does (~4 > for a -j4) and it seems a
> bit more swappy than I remember it being (r337443). ...

Clever, *lightweight* tracking.

Looking at what is actively resident and the size of some of my monitoring
tools, chopping out some monitoring (even at ~20M a pop) makes the system
much more productive.  A "watched pot never boils" type of situation.