Thank you.
I tried a few different sizes for RAM and swap.
I will try to remount /run/shm/ instead.
Could this also be related to this ?:
so Linux users may need to tweak kernel settings in order to run the latest version of steemd.
source: https://steemit.com/steem/@steemitblog/steem-0-16-0-official-release
It is related in that the settings given there are trying to address some of the same issues. The approach outlined by abit here works better.