Comment Re: This obsession with everything in RAM needs to (Score 1) 161
Garbage collection necessarily wastes memory by factor of 1.5 to 2.
The collection itself also slows down the program, and in some languages cannot even happen asynchronously.
Finally, the most important aspect for program performance is locality and memory layout, something you cannot even optimize for in a language where every object is a pointer to some memory on a garbage-collected heap.