Slightly offtopic... Has anyone really experienced starving of low priority traffic with PRIO qdisc? In my setup, I never achieved that, though I also wanted exactly that situation. I gave both the classes same amount of traffic at the same time. High prio got more bandwidth, but no starvation, even after I sent more traffic than the link capacity. > -----Original Message----- > From: lartc-bounces@xxxxxxxxxxxxxxx [mailto:lartc-bounces@xxxxxxxxxxxxxxx] > On Behalf Of Christian Benvenuti > Sent: Friday, June 15, 2007 3:32 PM > To: lartc@xxxxxxxxxxxxxxx > Subject: Re: PQ questions > > Hi, > > > > Your config does not prevent an higher priority class from starving > > > a lower priority class. > > > > Exactly. That is requirement. > > OK > > > Those stats are nice to have, but the ones I must have are for how many > > bytes/packets are enqueued at whatever time I check the queues. > > That information is there. Here is an example: > (b=bytes p=packets) > > #tc -s -d qdisc list dev eth1 > > qdisc prio 1: root bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 > Sent 85357186 bytes 59299 pkt (dropped 0, overlimits 0 requeues 0) > rate 0bit 0pps backlog 0b 35p requeues 0 > +-> This field is not initialized for this > qdisc type > qdisc pfifo 10: parent 1:1 limit 1000p > Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) > rate 0bit 0pps backlog 0b 0p requeues 0 > ^^^^^^^^^^^^^ > qdisc pfifo 20: parent 1:2 limit 1000p > Sent 85357120 bytes 59298 pkt (dropped 0, overlimits 0 requeues 0) > rate 0bit 0pps backlog 50470b 35p requeues 0 > ^^^^^^^^^^^^^^^^^^ > qdisc pfifo 30: parent 1:3 limit 1000p > Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) > rate 0bit 0pps backlog 0b 0p requeues 0 > ^^^^^^^^^^^^^ > > > I have tried to configure PQ to have two queues per filter with no > success. > > What do you mean? > > > Is it even possible to have (what I'll call) hierarchical PQ? I have yet > to > > find it. > > Something like this? > > tc qdisc add dev eth1 handle 1: root prio > tc qdisc add dev eth1 parent 1:1 handle 10 prio > tc qdisc add dev eth1 parent 1:2 handle 20 prio > tc qdisc add dev eth1 parent 1:3 handle 30 prio > > Regards > /Christian > [ http://benve.info ] > > > _______________________________________________ > LARTC mailing list > LARTC@xxxxxxxxxxxxxxx > http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
