How to enter various nvram boot-args

Solution 1:

If you want both arguments in one command, you can use a space to separate:

sudo nvram boot-args="vm_compression=1 serverperfmode=1"

Guess I found a way to do it. Open Terminal and run

sudo nvram boot-args="vm_compressor=1"
sudo nvram boot-args="$(nvram boot-args) serverperfmode=1"

then use nvram boot-args to check

$ nvram boot-args       
boot-args       vm_compressor=1 serverperfmode=1