Comment 6 for bug 143422

may be I wasn't exact enough, but we've often seen a problem with the early binding. what happens is, the load balancer thinks the backend is back to life when it sees the backend's listen port is open. then it starts sending request to that backend, which still might need quite a while until it's really ready to start handling request (think of checking the zeo cache). on a busy site the queue of unahandled requests can grow quite fast, which results in users needing to wait a long time for their responses; and if the queue grew big enough some might even get timeouts.