search for: sfq_depth

...tik.informatik.uni-karlsruhe.de/lehre/seminare/LinuxSe m/downloads/netfilter/iptables-HOWTO.html - From Patricks'' IMQ-page: ---- SFQ is very useful as a leaf qdisc. But by default, its internal queue length is 128 which is too much for small classes or even for not-so-fast links. Changing SFQ_DEPTH in net/sched/ sch_sfq.c to about 10-20 results in flows responding much faster to bandwidth changes. ---- Is that ment for SFQ in general or only in conjunction with IMQ? Thank you. Greetings, Nils

Hi If I use sfq qdisc on a CBQ class I get a lot of dropped packets and the backlog itr almost always to its full value: 128. From the HOWTO I understand that the queue is at 128 packets, and SFQ shows 128/1024 flows , but how can I increase that value ? I have tried ip link set txqueuelen but this only increases the tx queue on the interface. qdisc sfq d468: quantum 1514b limit 128p flows

...#39;'m reading codes in sch_sqf.c in kernel 2.4 of Linux. I find I messed up with the concept of slot, bucket and hash tables. Could anyone explain the data stucture of the hash tables a little to me. Thanks very much. Best, Franklin BTW: I can not understand why the number of entries of dep[SFQ_DEPTH*] should be twice:( _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

What''s wrong... I have Celeron 633MHz nd 768Mb RAM. When I''m running my script everything is OK, but when I''m connecting Internet and LAN link computer is hanging. But when i dissconnect this everything is OK. I have 500 users, 1500 classes and 3000 filters. Is it normal? What should I do?

...now. The problem seems to have been twofold. First of all I had the rate too high for the actual throughput. We have a 1mbit connection to the internet, and after lowering the rate of the parent to 800kbit, and sharing that between the children, it worked. The second thing I did was change the SFQ_DEPTH, which seemed to help a lot too. The SCHED_CPU hack didn''t work, for some reason the clock must be screwed or something. In any case, many thanks for all of this, it will make life a lot easier for some people in our organisation. All the best, .peter ____________________________...

> > SFQ is very useful as a leaf qdisc. But by default, its internal queue > > length is 128 which is too much for small classes or even for > > not-so-fast links. Changing SFQ_DEPTH in net/sched/ sch_sfq.c to about > > 10-20 results in flows responding much faster to bandwidth changes. I''m not sure I understand what problem is being described, but I suspect it''s the same one I''ve observed: in a low rate class a long queue gives a long delay....

Hi again, I was just looking around for ESFQ sources, and I see that the main site is down, and only has kernel 2.6.4 patches. Is ESFQ maintained? If so, where can I find patches for 2.6.10? Thanks, -justin _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/