David Goldblatt d701a085c2 Fast path: allow low-water mark changes.
This lets us put more allocations on an "almost as fast" path after a flush.
This results in around a 4% reduction in malloc cycles in prod workloads
(corresponding to about a 0.1% reduction in overall cycles).
2020-03-12 11:54:19 -07:00
..
2020-02-19 16:03:16 -08:00
2018-08-09 13:16:54 -07:00