Re: heavy VBR traffic with HTB

Linux Advanced Routing and Traffic Control

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Ed W wrote:

> Andy Furniss wrote:
>
>> Tiago Bruno Espírito Santo Silva wrote:
>>
>>> Hello!
>>>
>>> I made a simple configuration with HTB, 10% http and 90% Video, where
>>> http can share the available bandwidth left from video.
>>>
>>> But :(... i think HTB it's not very fast and it can't adapt quickly to
>>> the great variation of the MPEG 4 VBR (700M film), and some times it
>>> jerks a bit in great variations of bandwidth. I'm making a download to
>>> have always 100% bandwidth utilization (or near). This setup is running
>>> on a controlled home lan.
>>>
>>> Have any one tried something like that? am i missing some thing?
>>>
>>> Please some one tell me something.
>>
>>
>>
>> You rates/ceils are probably too high you need to allow for overheads
>> - seeing your script would help.
>
>
>
> Actually he said he ws *downloading*, and so he probably doesn't have
> control over the incoming stream.
>
> Remember that you can only really control outgoing rates properly -
> incoming streams you control indirectly and all you can do is ignore
> the sender for a while and hope he stops sending you stuff so
> quickly... So this is probably your problem - HTB reacts instantly,
> but the sender keeps sending stuff for perhaps several seconds until
> you stop answering him and then backs off - there is a reaction lag
> and there is not much you can do about it really.
>
> Ed W


Thanks for the responses!

Well i'm out this days but i'll try to test again when i go back home,
I'll send the scripts later this week.

I have 3 PCs, something like this:

A<===>R<===>B

Where R is the router with 2 ethernet cards...so i have in A a http
server (tcp) and VLC streaming (udp) to B, i think i can control the
outgoing traffic from A to B in the "R"outer.

You are saying to me that with this configuration if the rates/ceils are
well chosen, the video streaming must work with no jerks even if the
bandwidth is at 100% (or near).


Thanks for your help
Tiago



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