On Tue, 24 Apr 2018, Toke Høiland-Jørgensen wrote: > Pete Heist writes: > >>> On Apr 24, 2018, at 4:34 PM, Toke Høiland-Jørgensen wrote: >>> >>> Not sure. You do get HOL blocking while a packet is retried, basically. >>> And ath9k will keep trying way after it should have given up (up to 30 >>> retries per packet). If you combine this with a lot of backoff for each >>> transmission (which is also quite likely in a very congested setting), >>> and I suppose it might be possible… >> >> So that means everyone else waits while a packet is sent and re-sent >> to a station with a weak signal, for example? I see how that would >> wreck the latency pretty quick with the number of stations connected, >> plus channel contention with another repeater. It may be a much bigger >> factor than bloat. > > Yup, exactly... https://www.usenix.org/publications/login/april-2013-volume-38-number-2/wireless-means-radio https://www.usenix.org/conference/lisa12/technical-sessions/presentation/lang_david_wireless http://lang.hm/talks/topics/Wireless/Cascadia_2012/ (apologies for never cleaning this up to one set of good audio/video and slides) can you make a map of how well each AP hears every other AP? (iw scan on each device in turn to report the signal strength of the others)