This isn't the whole story, but linking is CPU-intensive and older linkers are mostly single-threaded. A lot of the performance gains come from doing work in pa

This isn't the whole story, but linking is CPU-intensive and older linkers are mostly single-threaded. A lot of the performance gains come from doing work in parallel, which makes for a big improvement on beefy modern multicore CPUs. Rui's given some good talks about Mold if you want more info: https://www.youtube.com/watch?v=hAt3kCalE0Y https://www.youtube.com/watch?v=hAt3kCalE0Y