Ben Greear <gree...@candelatech.com> writes: > I'm doing a test with 200 virtual stations on each of 6 ath9k radios. > > When I configure stations for DHCP, I see cases where stations on a particular > radio will not transmit anything sometimes. I see no 'XMIT' logs that show > indication of > frames being received in the driver from the upper stack, but if I use > 'tshark' on > a station interface, it shows frames being 'transmitted'. > > I do, however, see this, which looks like it might show > an issue. It looks like whatever 'aqm' is, it has an ever expanding number > of backlog packets:
The aqm is the intermediate queues in mac80211. So this indicates that the driver is not pulling packets for transmission. With that many stations, I wonder whether it is due to the airtime fairness scheduler throttling the station? What is the contents of debug/ieee80211/wiphy2/netdev\:sta30194/stations/00\:0e\:8e\:69\:b8\:f7/airtime while the station is not transmitting? And is it all stations on that particular radio, or only some of them? -Toke
