I had a linux wireless router. I would like to monitor the queue lengh of the wireless interface. By default, the wifi0 interface is with pfifo_fast qdisc which does not report backlog packet. I replaced pfifo_fast with pfifo: 'tc qdisc replace dev wifi0 root pfifo' Then I use iperf to send UDP pkts faster than the interface can handle but when I read the qdisc, the result is like:
qdisc pfifo 8007: limit 10p Sent 46249560 bytes 30600 pkts (dropped 0, overlimits 0) It is really strange, because over 80% of packets lost is observed by application layer but by qdisc, there is no packet dropped at all and no backlog. Any hints for this result? Thank you, Yang Su _______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
