
Those parabola "scripts" are just a bunch of arbitrary commands disguised as a service that rely on assumptions without testing anything...I wouldn't recommend them (unless you have the exact same HW & SW config as the developer).
Not everyone want to run all the time with "cpupower frequency-set -g performance"...or have and SSD as /dev/sda...or need 8 virtual midi ports (ok, I'm being picky, this one doesn't harm).
Not saying that the concept is necessarily wrong, but I don't think the implementation is ready for prime time...