RPI3 swap experiments

[Trev]

>> bob prohaska wrote on 30/06/2018 09:39:
>> In my notes I don't find an RPi3 test case for 2GB swap, only 1, 2.3 and 3.
>> I _think_ 2 GB is enough, based on a ~1.4 GB peak, but apparently didn't test it.
>> Apologies for the misinformation!

Just for info: A successful make -j4 buildworld using swap (2G) and 
/usr/obj (20G) on an external USB mechanical disk drive on the RPi3B+ 
used a maximum swap of 1130MB in multi-user with almost nothing else 
running apart from my logging script calling top, head, gstat and grep 
every second or two.

Now running a make -j4 buildworld with 2G of swap on a USB memory key 
plugged into a powered USB hub...