stripe/einhorn — pull request #30 by samuelmb (2013-10-16 03:05:37+00:00)
Title: Prioritize unacked, unsignaled workers when culling excess workers

When culling workers, prioritize any unacked, unsignaled workers over acked signaled workers - i.e., when we rapidly spin up and spin down the number of workers with successive `inc`s and `dec`s, we choose to kill off the mostly recently launched workers first.