From what I have read, RAM oversubscription should be supported, however I continue to receive "you are oversubscribing too much RAM, please stop some other antlets to start this one" error message when trying to oversubscribe.
I have read the article here on swap and it looks like I am already configured for swap.
root@rtantsle:~ # cat /etc/fstab | grep swap
/dev/sdb1 none swap sw 0 0
root@rtantsle:~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931.5G 0 disk
├─sda1 8:1 0 2M 0 part
├─sda2 8:2 0 128M 0 part /boot
├─sda3 8:3 0 16G 0 part /
└─sda4 8:4 0 915.4G 0 part
sdb 8:16 0 931.5G 0 disk
├─sdb1 8:17 0 16.1G 0 part [SWAP]
└─sdb2 8:18 0 915.4G 0 part