Duo V2 out of memory prevention?

Update 2 -Looks like that processes that are 'niced' are more likely to be killed due to the calculation of the out-of-memory killer. It also appears that readynas is configured to run apache-ssl with a nice value. This is generally a good idea, but it also means it is more likely to kill apache-ssl than it is to kill minidlna.
So far my best bet is (1) to not use minidlna at all or (2) make sure those processes are 'niced' more strongly than apache-ssl. Moreover, if the real culprit memory hog can be killed that should also mean that the system would become/remain responsive... I hope?
Here's the rather unelgant script I've put in /etc/rc2.d/S99renice to try to accomplish this

#!/bin/bash
#renice minidlna -> high value = low priority and more like to be killed by OOM (out of memory manager)
if [ ! -z "`pidof minidlna`" ]
then
	renice -n 10 `pidof minidlna`
	echo "Reniced minidlna to 10"
else
	echo "minidlna not running while trying to renice"
fi
#renice sshd -> low value = high priority and less likely to be killed by OOM
if [ ! -z "`pidof minidlna`" ]
then
	renice -n -1 `pidof sshd`
	echo "Reniced sshd to -1"
else
	echo "sshd not running while trying to renice"
fi