On Wed, Oct 21, 2009 at 7:01 AM, Joerg Pommnitz <pommnitz@xxxxxxxxx> wrote: > ath5k phy0: no further txbuf available, dropping packet. > The timing makes it very likely that the hostapd on wlan1 disturbed the iperf run on wlan0. Is this a known problem? Is there something I can do to help track this down? It is a known problem - please do try to track it down. I think a good place to start is looking at the creation of tx descriptors, particularly for the beacon and CAB queues, and make sure they are properly released. Maybe printing out a high-water mark of the created vs available descriptors when transmitting packets would be a useful data point. BTW the reason all traffic stops is that we stop the queues but don't re-enable them in that case -- we should probably set a timer or something to recover from that situation. -- Bob Copeland %% www.bobcopeland.com -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html