3 ms·

Refcounting is significantly slower under most circumstances. You are literally putting a bunch of atomic increments/decrements into your code (if you can't pro

by gf000 11mo ago

Refcounting is significantly slower under most circumstances. You are literally putting a bunch of atomic increments/decrements into your code (if you can't prove that the given object is only used from a single thread) which are crazy expensive operations on modern CPUs, evicting caches.

LtWorf 11mo ago
Under most circumstances function local variables aren't passed to other threads, or passed at all.
- gf000 11mo ago
  And? That's a small, optional optimization done by e.g. Swift. Also, I don't know how it's relevant to Go which uses a tracing GC.
  - LtWorf 11mo ago
    It's not "small" if it accounts for most of the allocations :)