Compare the two ends of this window

commit ref when n center lo hi min max
3cb1c03d master 2 days ago 10 104.9k 104.8k 104.9k 104.8k 104.9k
64cae3af master 1 day ago 10 104.9k 104.9k 104.9k 104.9k 104.9k

Values in allocs/op.