Hello list, I am now using hfsc for QOS. I have something like this: tc qdisc add dev ethx root handle 1: hfsc default 9 tc class add dev ethx parent 1: classid 1:1 hfsc ls m2 70mbit ul m2 70mbit tc class add dev ethx parent 1:1 classid 1:9 hfsc ls m2 7mbit #DNS stuff follows tc class add dev ethx parent 1:1 classid 1:2 hfsc rt m1 12mbit d 1ms m2 1mbit #Half-life tc class add dev ethx parent 1:1 classid 1:3 hfsc rt m1 24mbit d 1ms m2 2mbit #Some packets with important flags like SYN SYN,ACK small ACKs tc class add dev ethx parent 1:1 classid 1:4 hfsc rt m1 12mbit d 1ms m2 1mbit #www traffic tc class add dev ethx parent 1:1 classid 1:5 hfsc ls m2 20mbit #for every client i do this tc class add dev ethx parent 1:5 classid 1:$wwwclient hfsc rt m2 128kbit ls m2 128kbit .... And so on for everybody... #bulk traffic tc class add dev ethx parent 1:1 classid 1:6 hfsc ls m2 30mbit #for every client i have ... tc class add dev ethx parent 1:6 classid 1:$bulkclient ls m2 128kbit ... so on for everybody... This setup works ok, but unfortunately with not enough knowledge about what i am doing. The rt classes are meant to guarantee a bandwidth at an rate (m2). I also used m1 and d parameter, but without thinking what they really do. After reading http://www.tik.ee.ethz.ch/~crossbow/rp/plugins/hfsc.html I can say m1 and d has nothing to do with m2 (m1 is calculated based on that formula), unlike the way i did that, using d as 1ms and m1 as 12 times greater than m2. After saying those, i have some questions, hopefully the'll clarify most of my wanders regarding HFSC: 1. How m1 and d really behave, should they be considered and calculated based on the formula from the link above? Or is just a way to define how the speed increase or decrease from m1 to m2 and viceversa into a periodic function (with d as the T). 2. How m1 and d behave when used in different service courves types (ls, rt and ul). 3. If i use both rt and ls parametters, is ls used for the remained bandwidth? (i guess Yes) 4. Is it ok to consider the default class as i would do with HTB? I mean, i usually make the default class in HTB very small and if i see it does pretty much traffic, then there is something wrong. In HFSC many exemples gives 10% of bandwidth to default class. 5. In my setup, does classes from bulk traffic will ever get the maximum of the "most" parent class (70mbit)? Thanks in advance. _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
