search for: qdiscs

now, i''m learning and try to read a lot of article about tc command in linux for setting traffic shaper. but i''m doubt about In the theory about tc command ... In general, we define class under root qdisc but Is it can be possible ???? If we define another qdisc under root qdisc, Can i do it? because i have just read tc command syntax and i found this point ... syntax: tc qdisc

Hi all, First, let me say I''ve been most impressed with how quickly and professionally people on this list ask and answer questions. Next, let me say that with which I need help is properly configuring strict PQ, and gathering certain stats. Specifically: - I need to create a priority queue with four queues (let''s say they are of high, medium, normal, and low priority) - I

With outbound QoS setting in Libvirt XML, libvirt will add a tc ingress qdisc for traffic shaping. Then if you set VLAN tag to that tap device, this qdisc will automatically gone by no reason. Could anyone shed some lights where should I look into? I'm really confused and got no clue here. Thanks! Steps to reproduce -- # virsh start instance-name # virsh dumpxml instance-name ...

...1) In section 9.4 (Terminology) the definition for "Classes" states that: "A classful qdisc may have many classes, which each are internal to the qdisc. Each of these classes may contain a real qdisc". As far as I can understand, each class can actually contain one _or more_ qdiscs. Furthermore, (at least in the case of CBQ) a class may also contain one or more _classes_ (this really puzzled me. But the HOWTO''s example of a CBQ configuration, and a reading of /usr/src/linux-2.4/net/sched/sch_cbq.c appear to indicate this). (2) In section 9.5.2 ("The qdisc f...

Hello, I''m still new in using tc...I wanna ask... 1. what is the difference between classless and classful qdisc?? when I made a qdisc, are I must create both of that qdisc...??? 2. what is the difference beetween three of the classless qdisc in linux redhat 2.4, sfq pfifo and tbf if I using the htb classful qdisc ??? because when I use htb classful qdisc it means I made a qdisc that

Hi, I am attempting to set up some simple outbound shaping following the LARTC HOWTO. The HTB qdisc seems to work as the documentation says, but my filters don''t seem to be working. All of the packets go to the default queue regardless of what filters I set, it seems. (according to tc -s qdisc show) I am trying to get this working on my openwrt box (whiterussian rc6), but when

Hello I''m doing some qdisc programming and I want to get/read the current ingress rate from a kernel module I was wondering what is the most convenient of achieving this My idea is to load the ingress qdisc and the police filter if necessary. and modify the source to export a structure or function so I can read the ingress rate. How does this sound? Is there a simpler way? With

...blasses for each user, should look like this: 1: htb qdisc | 1:1 htb class /|\ / | \ 10:1 10:2 10:3 prio queues | | | 20: 30: 40: htb qdiscs / | \ 20:1.... 30:1... 40:1... htb classes Then, if I''m right, when there is traffic in prio qdisc 1 to fully load link, users would get it distributed evenly but any low priority connections in qdiscs 2,3... would starve. Which i...

Hi to all of you!!! I am a Computer Science student trying to do the pre-grade thesis. I am trying to develop a free software tool to help administrators to control the traffic. Right now this tool is based on tc and iptables. I am having some problems trying to understand tc and tc examples: - Why in almost every list of tc rules based on htb class, there is a "tc qdisc dev ... root ...

Okay, here is a very simple QOS scheduler that delays packets for 2.6. It is good for testing, and might be useful for people who want to put some class of traffic into a "penalty box". Alexey''s tc command is really easy to extend to new disciplines. There is a version which knows about this scheduler at: http://developer.osdl.org/shemminger/tcp/iproute2-delay.tar.bz2 The

I ''m having a problem identical to one encountered on this list awhile back: >I''m trying to configure dsmark qdisc on 2.6.11.4 user mode linux and >tc from iproute2-2.6.11-050314. > > >I think I have some mismatch in my setup since adding dsmark qdisc >fails *unless* I specify "set_tc_index" argument which I believe should >be optional:

Hello All, I'm trying to figure out why xen-utils-common 3.2 doesn't suport bridging on multiple interfaces. I've been digging around /etc/xen/scripts/network-bridges. And modified it so that during boot, when executed the script writes into /tmp/netbr file, but I commented out code that actually creates bridges. I discovered that this script is called three times during boot, I

Hi all, I''m having some problems setting up qdiscs on a bridge.The config looks a little like this: ifconfig ifb0 up # Bring up the IFB for this bridge. tc qdisc add dev eth2 ingress tc qdisc add dev eth3 ingress tc qdisc add dev ifb0 root handle 1:0 cbq bandwidth 100Mbit avpkt 1000 cell 8 # Raw qdiscs on each bridge port tc qdisc add de...

The following (occuring on debian/testing with kernel-image-2.6.8-2-386 version 2.6.8-13 and iproute version 20041019-3) confuses me: # tc qdisc add dev eth0 root handle 1: prio # tc filter add dev eth0 parent 1: proto ip pref 1 handle 1 fw classid 1:2 # tc filter ls dev eth0 filter parent 1: protocol ip pref 1 fw filter parent 1: protocol ip pref 1 fw handle 0x1 classid 1:2 # tc filter del dev

Hi! I really need help with a u32 filter that won''t match what I think I''m telling it to. The situation is that I have set up an internal computer to change the TOS value of packets sent by certain processes to 0x1E (If anyone known of a better way to mark packets, please tell me. I would love to find some module that adds an IP option with UIDs and GIDs to the packets - does

...lass ? They are so \"intimately tied together\" that i\''m not sure not make the difference. Why can\''t we have a qdsic HTB with a class CBQ within or reverse. - We have classes but is there any heritage (i\''m not sure it is the right word) somewhere: between qdiscs, between classes or between qdiscs and classes. About DSMARK, I don\''t understand the way it works: - What is the (mask, Value) ? What is it used for ? - Does it mark the packet or the structure in the kernel ? - If i can mark the packet, how is it done ? Can i put only \''mini...

Hell I''m new to Qdisc programming and I was wondering, what is the difference between using an internal Qdisc (like e.g. TBF does) vs. not using internal Qdisc (like e.g. SFQ does)? Can someone give me a quick rundown of pro and cons? with regards R.harper _________________________________________________________________ Undgå pop-ups med MSN Toolbar - http://toolbar.msn.dk hent den

ALL: <<diffserv-gred_10-06>> I have attached the current script that I am using. $TC qdisc add dev $EDEV parent 2:20 gred setup DPs 3 default 2 grio $TC qdisc change dev $EDEV parent 2:20 gred DP 1 limit $lim min $minTh max $maxTh avpkt $avgPL burst $bursty bandwidth $netBand probability 0.02 prio 2 $TC qdisc change dev $EDEV parent 2:20 gred DP 2 limit $lim min $minTh max

Hi, I am using netem to add loss and then adding another qdisc within netem according to the wiki. Then i want to change the netem drop probability without having to delete the qdisc and recreate it. I try it but I get invalid argument: thorium-ini hedpe # tc qdisc add dev ath0 root handle 1:0 netem drop 1% thorium-ini hedpe # tc qdisc add dev ath0 parent 1:1 handle 10: xcp capacity 54Mbit