Very misleading title. This is not about a GC speed up, it is about a reduction in pause time. The GC a itself is eating as many cycles as before (possibly more

Very misleading title. This is not about a GC speed up, it is about a reduction in pause time. The GC a itself is eating as many cycles as before (possibly more due to the cost of making things incremental) and they are clear about this in the article.