jakesmith/HPCC-Platform — comment on commit 099b768e37865acec0caebe2f3f1ae08dc769d6c
File: thorlcr/graph/thgraph.cpp line 2347
By jakesmith:

There are calls in jlib, that could be used here to fetch physical RAM and use as basis here.
but they are based parsing /proc/meminfo, not sure portable
sysinfo looks like portable method to use.