For very busy servers, the internal jobs queue where accepted
sockets are enqueued can grow without limit.
This is a problem for two reasons:
- queueing too much work causes the server to respond with huge latency,
resulting in repetead timeouts on the clients; it is definitely
better to reject the connection early, so that the client
receives the backpressure signal as soon as the queue is
becoming too large
- the jobs list can eventually cause an out of memory condition