Seems like a needless feature, overcommit, "oh let's make our app faster by pre allocating 2GB of RAM!" says the naive programmers, "Oh let's make our operating

Seems like a needless feature, overcommit, "oh let's make our app faster by pre allocating 2GB of RAM!" says the naive programmers, "Oh let's make our operating system more powerful by allowing overcommit.". Overall, you moved the allocation delay from the app to the OS, which has much less end to end knowledge of how to do it effectively, overcomplicated both layers, achieved practically nothing overall, like a dog chasing it's tail, except now both layers have more garbage code, so it's like an obese dog chasing it's tail!