| 1 |
On Sunday 02 April 2006 21:06, Sven Köhler <skoehler@×××.de> wrote |
| 2 |
about '[gentoo-user] traffic shaping': |
| 3 |
> Is there any application or script that is easy to configure and does |
| 4 |
> all the necessary things to shape my DSL traffic? |
| 5 |
|
| 6 |
Not at this time. |
| 7 |
|
| 8 |
However, it's actually fairly easy to throw something together with HTB |
| 9 |
that works fairly well. If you are only matching on protocol (TCP or UDP) |
| 10 |
and (source or destination) (IP or port) a custom iproute2 script will not |
| 11 |
be that hard. |
| 12 |
|
| 13 |
tc qdisc created your root HTB(s); tc class creates your child/sibling HTBs |
| 14 |
[classes under the same qdisc can swap bandwidth]; tc filter decides what |
| 15 |
classes receive packets. |
| 16 |
|
| 17 |
Hit the TLDP Advanced Routing HOWTO and just hit the parts about HTB and tc |
| 18 |
filter. Then, go to the HTB site and read the user documentation there. |
| 19 |
Then come back and read the tc filter stuff again -- expect to learn a |
| 20 |
little to a lot about how a packet looks be it IP, TCP, or UDP. |
| 21 |
|
| 22 |
Write some scripts and experiment, you won't get it perfect the first time |
| 23 |
but after a little bit of work you'll find your browsing experience much |
| 24 |
better. Your filtering policies won't match mine, so it's hard to give a |
| 25 |
single script. I find it works best to load up your connection then start |
| 26 |
experimenting with a network monitor in another window -- you'll be able |
| 27 |
to see changes quickly and (at least with HTB) you won't drop packets just |
| 28 |
because you were changing settings. |
| 29 |
|
| 30 |
When it comes down to it, if you are killing your upstream /something/ is |
| 31 |
going to suffer, tc just lets you put the pain where you want it; if you |
| 32 |
regularly saturate your upstream, buy fatter pipes. TC WILL NOT HELP AN |
| 33 |
OVERLOADED DOWNSTREAM since it has no control over what packets are sent |
| 34 |
to you. |
| 35 |
|
| 36 |
If your requirements are fairly simple, send it my way and I'll try to |
| 37 |
write out a script for you; I know I need more practice. |
| 38 |
|
| 39 |
-- |
| 40 |
"If there's one thing we've established over the years, |
| 41 |
it's that the vast majority of our users don't have the slightest |
| 42 |
clue what's best for them in terms of package stability." |
| 43 |
-- Gentoo Developer Ciaran McCreesh |
Archives