Dear list:
I have a problem I cannot handle yet, and need to solve it as soon as possible. Would be very greatful with anybody who can help me.
I have a 512/512 link to internet, that I want to share between several computers. I have eth0, with a public IP address, conected to Internet, and also, eth1, with a private IP address, for network with the surfing computers. I have a main class with the whole 512kbit, then 2 child classes in this way (you can see the complete script at the end):
class 1: rate = ceil = 64kbit, prio 0, for VOIP class 2: rate = ceil = 448kbit, for SURFING
Class 2 is subdivided again in about 20 classes, for 20 surfing computers, this way:
class 3: rate = 18kbit, ceil = 448kbit, prio 1, SURF
I have a classical problem (I think). As you can see, first 64kbit are for VOIP, so, it is necesary the best quality, and the minimal delays. 64Kbit is pretty enough for 1 VOIP channel (it is supposed to really use no more than 20kbit). And also, the 64kbit class has the highest priority. Nevertheless, specially when all 20 users are surfing, or some user are browsing weight pages, or when 2 or more users are downloading at the same time, I cannot get VOIP to work properly, because quality becomes very poor. I have made all kind of imaginable test, probes and combinations, trying to test with different burst values for classes, attaching sfq qdiscs to all leaf classes, then only to surfing classes, then only to VOIP classes, and even, gaming with R2Q/Quantums, that would not be necessary, because 64Kbit is very more than enough.
So please, does anyone have any idea how to completely separate VOIP and SURFING, making 2 independent channels, without one service affect to other ??
Very thanks in advance.
If you are still able to read, after having read all this stuff, here goes my script as is now...
Best Regards to everybody.
Ricardo.
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#!/bin/bash
tc qdisc add dev eth1 root handle 1: htb default 121 r2q 1 tc qdisc add dev eth0 root handle 1: htb default 20 r2q 5
tc class add dev eth1 parent 1: classid 1:1 htb rate 512kbit ceil 512kbit tc class add dev eth0 parent 1: classid 1:1 htb rate 512kbit ceil 512kbit
tc class add dev eth1 parent 1:1 classid 1:10 htb rate 64kbit ceil 64kbit prio 0 tc class add dev eth0 parent 1:1 classid 1:10 htb rate 64kbit ceil 64kbit prio 0
tc class add dev eth1 parent 1:1 classid 1:20 htb rate 448kbit ceil 448kbit prio 1 tc class add dev eth0 parent 1:1 classid 1:20 htb rate 448kbit ceil 448kbit prio 1
# PER MACHINE OR IP CLASSES
tc class add dev eth1 parent 1:20 classid 1:90 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:91 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:101 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:102 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:103 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:104 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:105 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:106 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:107 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:108 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:109 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:110 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:111 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:112 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:113 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:114 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:115 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:116 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:117 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:118 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:119 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:120 htb rate 18kbit ceil 448kbit prio 1 tc class add dev eth1 parent 1:20 classid 1:121 htb rate 18kbit ceil 448kbit prio 1
# SFQ QDISCS PER LEAF CLASS
# VOIP tc qdisc add dev eth0 parent 1:10 handle 10: sfq perturb 10 tc qdisc add dev eth0 parent 1:20 handle 20: sfq perturb 10
#SURFING tc qdisc add dev eth1 parent 1:10 handle 10: sfq perturb 10 tc qdisc add dev eth1 parent 1:90 handle 90: sfq perturb 10 tc qdisc add dev eth1 parent 1:91 handle 91: sfq perturb 10 tc qdisc add dev eth1 parent 1:101 handle 101: sfq perturb 10 tc qdisc add dev eth1 parent 1:102 handle 102: sfq perturb 10 tc qdisc add dev eth1 parent 1:103 handle 103: sfq perturb 10 tc qdisc add dev eth1 parent 1:104 handle 104: sfq perturb 10 tc qdisc add dev eth1 parent 1:105 handle 105: sfq perturb 10 tc qdisc add dev eth1 parent 1:106 handle 106: sfq perturb 10 tc qdisc add dev eth1 parent 1:107 handle 107: sfq perturb 10 tc qdisc add dev eth1 parent 1:108 handle 108: sfq perturb 10 tc qdisc add dev eth1 parent 1:109 handle 109: sfq perturb 10 tc qdisc add dev eth1 parent 1:110 handle 110: sfq perturb 10 tc qdisc add dev eth1 parent 1:111 handle 111: sfq perturb 10 tc qdisc add dev eth1 parent 1:112 handle 112: sfq perturb 10 tc qdisc add dev eth1 parent 1:113 handle 113: sfq perturb 10 tc qdisc add dev eth1 parent 1:114 handle 114: sfq perturb 10 tc qdisc add dev eth1 parent 1:115 handle 115: sfq perturb 10 tc qdisc add dev eth1 parent 1:116 handle 116: sfq perturb 10 tc qdisc add dev eth1 parent 1:117 handle 117: sfq perturb 10 tc qdisc add dev eth1 parent 1:118 handle 118: sfq perturb 10 tc qdisc add dev eth1 parent 1:119 handle 119: sfq perturb 10 tc qdisc add dev eth1 parent 1:120 handle 120: sfq perturb 10 tc qdisc add dev eth1 parent 1:121 handle 121: sfq perturb 10
# FILTERS
# VOIP tc filter add dev eth0 protocol ip parent 1:0 prio 0 u32 match ip src 216.118.226.244 flowid 1:10 tc filter add dev eth1 protocol ip parent 1:0 prio 0 u32 match ip dst 216.118.226.244 flowid 1:10
# SURFING tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.2 flowid 1:90 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.3 flowid 1:91 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.101 flowid 1:101 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.102 flowid 1:102 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.103 flowid 1:103 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.104 flowid 1:104 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.105 flowid 1:105 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.106 flowid 1:106 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.107 flowid 1:107 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.108 flowid 1:108 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.109 flowid 1:109 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.110 flowid 1:110 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.111 flowid 1:111 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.112 flowid 1:112 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.113 flowid 1:113 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.114 flowid 1:114 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.115 flowid 1:115 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.116 flowid 1:116 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.117 flowid 1:117 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.118 flowid 1:118 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.119 flowid 1:119 tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip dst 192.168.0.120 flowid 1:120
# END
I haven't read the script properly, but generally three points come to mind.
You need to back off more from link speed - total ceils to about 80% and share that between interactive and bulk.
SFQ default queue length is too long to be used as you want - use esfq or change the length to 16 in the source code (see www.docum.org FAQs).
You should really only send bulk to SFQ - It will behave better than a fifo if you mix traffic - but at the low rates you set it will still cause too much delay for interactive (small UDP/TCP).
Andy.
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