Is it just me, or are the bin sizes listed from jemalloc (assuming 150 should be 160, and 182 be 192) not dividing each power-of-2 range linearly?
16, 32, 48, 64, 80, 96, 128, 160, 192, 256, 320, 384, …
It looks like, from 64 and up, each power-of-2 range is divided into two quarter ranges and one half range.