On 2010-07-21 02:21, Patrick Mahan wrote: > I am the first to admit I don't understand ALTQ and it's impact on QoS but > that said, I am trying to learn. > > I have the following three systems. All systems are running FreeBSD > 8.0-p2 Release. > I am attempting to learn how AltQ can be used to prioritized and setup > banddwith > pipelines. > > At the end of this message is the topology and all (I hope) the relevent > info for > someone to help me understand what is happening. > > I have setup AltQ on em0 on NPX3 with a queue set to run at 1.9Mbps. > However, in > testing by generating UDP traffic on NPX4 and having it received on NPX3 > I am > seeing (what I believe) to be really low throughput scores for queue > test7788 > (see the pf.conf below). > > pfctl -vv -s queue shows the bandwidth starts at 4.84 Kb/s, not 1.9 Mbps > I was > expecting. > > Am I > > 1. Not driving the datastream high enough to eat 1.9 Mbps (what should I > run as > my iperf -b value? > > 2. Miss configuring AltQ? > > or > > 3. There is a bug in AltQ? > > Thanks for the education - > > Patrick > > > Network topology: >
According to the following PR, ALTQ doesn't work with em(4) in 8.0-p2. A patch has been submitted for later versions but since I haven't upgraded myself because of this issue, I'm not sure exactly what version you need. http://www.freebsd.org/cgi/query-pr.cgi?pr=138392 Regards Morgan _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
