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Dear LATRC and devotees, I have developed some Linux queueing disciplines. I developed them for my masters project. You are free to use or distribute my work. Here is the abstract from my dissertation:- This is a project to implement a Mice and Elephants queuing discipline on Linux. My project has three aims. The first aim was to produce a prototype...

...cy 50ms burst 1540 I then attempt a large fetch from another machine via wget (~40 megs) and the rate was clamped down to about 12Kbytes/s. As this seemed too much, I gradually increased the latency up to 200ms which then gave me the expected results (~34Kbytes/s). I then applied this queuing discipline on a machine acting as a gateway/router for a few VLANed subnets. The tbf was applied on interface eth1.615. From another workstation I attempted a wget, and so the traffic had to go through the gateway/router. The download rate went from 16 Mbytes/s down to about 1.6 Mbytes/s, but was much...

I want to implement a new queuing discipline for the tool tc. The new queuing discipline would support the application of multiple threads on the same queue with different kinds of traffic. Each kind of packet will have its own drop probability but while calculating the average queue length, the no. of packets in the queue will be equal to...

i have a question with queuing discipline " if i create many classs with sfq and cbq and ... i would like to know about qos . which queuing discipline will be chosen first. ( not use priority ) (queuing discipline) sfq---------> packet incoming packet outgoing...

Hello, I''m currently searching for any kinds of informations about writing new queue discipline and/or filter modules. I have to write a discipline and/or filter to implement an experimental stateful router which maintain a table for TCP connections. The original code from A. Kuznetsov is provided without comments. It would be wonderful to have a version with comments, do you have any? I'...

Hi, I''m work on traffic shaping and I would like to know if it''s possible to mix differents Queueing Disciplines ?? I would like to combine the proporties of a PRIO discipline with that of a CBQ discipline. I read some documentation and I found nothing about that, can you help me ? I think to try something like that : tc qdisc add dev $DEV root handle 1: cbq … tc class add dev $DEV parent 1: classid 1:1 c...

Hello mailing list, I don´t know how to use HFSC queuing discipline with tcng configuration language. I become always this error: syntax error near "hfsc" Is it possible, that tcng provides no support for this classful hfcs queuing discipline? Please help! thanks ----------------------------------------------------------------------------...

Hi, I have met the problem: when I use the shaping discipline tc qdisc add dev ppp0 parent 1:2 tbf latency 50ms burst 1450 rate 50kbit one of my application (namely, "aMule") starts leaving sockets in "CLOSING" state. These sockets accumulate and do not disappear. Eventually I have so many of these dead sockets that the kernel warns &q...

Hi, In the GRED queueing discipline of linux traffic control, we can define around 16 Virtual Queues with different RED parameters for each one of these. As far as I think, while applying RED on each of the virtual queues, with the grio option set, quave(the average queue length) of a virtual queue with priority= n is given by the s...

Hello, I''am successful using a linux (2.4.20) bridge and the cbq.init_v0.7 script for traffic shaping. But I can only use the queuing discipline tbf (LEAF=tbf). If I try use queuing discipline sfq or none then tc applies the rules but no shaping occurs. Is this problem a normal behavior when using bridging ? I tried to use htb.init (using patched tc binary). It accepts the rules but also no shaping occurs (tested with all queuing discipl...

Hi , I have the problem with HTB queuing discipline.I am giving my setup below. 172.30.179.206 172.30.180.55 LAN | | WAN -----------------| LINUX WITH |-------------- 172.30.179.140 | HTB | 172.30.180.72 FTP SERVER...

Hi, Has anyone used TC in a wireless environment, which is dynamic. I understand that the parameters for queuing are static and cannot be changed unless the queuing discipline is deleted and reloaded with different parameters. If anyone can share any experience, that would be helpful. Thanx. Azim. _______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc

Hello I am trying to attach pfifo_fast to af leaf htb class. But tc segmenetation faults. If I try the failing command throug strace, it shows me that the last thing tc tries to do just before the segmentation fault, is to try to open a file called "/usr/lib/tc/q_pfifo_fast.so". Of course i have tried to find worthfull information around the Internet, but haven''t found

Hi! I''m currently working on Earliest Deadline First qdisc implementation for providing delay bounded real-time services according IntServ architecture under Linux. My first step was simple EDF implementation, that is available from http://www.avalon.ru/~dketov/. If someone interesting in using EDF or just trying and testing it, please go ahead :) Any questions are welcome. Dimitry.

http://www.linuxdoc.org/HOWTO/Adv-Routing-HOWTO.html 9.5 Ingress policer qdisc contains: FIXME: instead of dropping, can we also assign it to a real queue? Has anyone done this? What support is there or alternatively, what''s missing? I''d like to use netfilter to queue packets and then connect that to things like TBF. For instance, suppose we want to process the incoming

Hello Tom! After i read and analyze some docs about IFB i decide that for implement this feature in Shorewall not need more efforts (of course i may be wrong). If we have 'ifb0' device then we must activate ingress discipline on real device (f.e. eth2) and redirect 'egress' from it to 'ifb0'. tc qdisc add dev eth2 ingress tc filter add dev eth2 parent ffff: protocol ip \ u32 match u32 0 0 action mirred egress redirect dev ifb0 And then we can use 'tcrules' and 'tcclasses' for c...

...sts are communicating to each other and all traffic between them is routed through a router which is like the bottleneck and acts as the wireless network environment with the bottleneck capacity as the known wireless link capacity.I was thinking and am currently trying this using the HTB queuing discipline.I wanted to know if this idea can be effectively implemented using the HTB queuing discipline. Also im having some problems with installation and working of tcng on my Suse 9.2 system which is running with a 2.6.8 kernel version.Ok the simulator could not be compiled. But when i tried using th...

I am running a server inside of VMWare, and the clock gains ~30 seconds every 1000 seconds or 1.03X. I need to keep the drift under the magic 1000 limit that ntpd kills its self, but despite setting maxpoll really low I get: Dec 11 23:58:14 host ntpd[4909]: kernel time discipline status change 41 Dec 11 23:59:17 host ntpd[4909]: kernel time discipline status change 1 Dec 11 23:59:17 host ntpd[4909]: time correction of -1123 seconds exceeds sanity limit (1000); set clock manually to the correct UTC time. /etc/ntp.conf: server time.intranet.pdinc.us maxpoll 7 Ideas? If I...

...Vmin. The speed is always changing between Vmax and Vmin. I want to share the actual bandwidth (you don''t not how much, you only know the speed is between Vmax and Vmin) for N clients. The bandwidth should be shared so nobody can get more bandwidth than the others. There is some queue disciplines like esfq and WRR. But theses ones only work if you know the actual bandwidth. HTB works only width fixed bandwidth too. I have studied all shaping and queue disciplines in linux, and I don''t have a real solution yet. Do you have any idea? Santiago -- Este mensaje ha sido analiz...

Hi all, I previously mailed this list explaining that I been given the task of implementing a dynamic traffic shaping scheme on an existing network. I was looking for guidance on how I should approach this but unfortunately I was unable to provide much information about the existing traffic shaping system. I have recently obtained the existing tc scripts though and was hoping someone could help