We've seen lumpy distributions of requests to workers, which seems to parallel what some other projects have seen [0][1]. The solution (as best we can tell) is to take advantage of the SO_REUSEPORT that eventlet's been setting for us since basically forever [2]. [0] https://lwn.net/Articles/542629/ [1] https://github.com/varnish/hitch/issues/142 [2] https://github.com/eventlet/eventlet/commit/f9a3074a3 Change-Id: I83cdaa2cbd394cbd49609c65bf9c5ed026c55417