Pervasive RC is the most costly GC. But it is fine where not pervasive, and even some places where it is. RC is about the last thing you would worry about slowi

Pervasive RC is the most costly GC. But it is fine where not pervasive, and even some places where it is. RC is about the last thing you would worry about slowing down your Python program. I RC'd a thing in a program, five years back. The program had a linked list in it. Increments and decrements happened on a scale of minutes. I did not agonize over it.