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Re: setting bandwidth

From: cowwoc <cowwoc@bbs.darktech.org>
Date: Sun, 28 Jul 2013 15:52:36 -0400
Message-ID: <51F57684.1050302@bbs.darktech.org>
To: Martin Thomson <martin.thomson@gmail.com>
CC: Kiran Kumar <g.kiranreddy4u@gmail.com>, public-webrtc@w3.org, Silvia Pfeiffer <silviapfeiffer1@gmail.com>

     How do WebSockets deal with this problem? Do they even try to?


On 28/07/2013 1:10 PM, Martin Thomson wrote:
> This really isn't the place for lessons in congestion management on 
> the internet. Maybe you can start out by searching for "congestion 
> collapse". Get back to us when you can explain why TCP works like it does.
> On Jul 28, 2013 5:06 PM, "cowwoc" <cowwoc@bbs.darktech.org 
> <mailto:cowwoc@bbs.darktech.org>> wrote:
>     On 28/07/2013 3:30 AM, Martin Thomson wrote:
>>     On 27 July 2013 09:40, cowwoc<cowwoc@bbs.darktech.org>  <mailto:cowwoc@bbs.darktech.org>  wrote:
>>>     I expect an immediate sharp video experience.
>>     I suspect that no matter what we do, you will be disappointed.  The
>>     thing is, what you describe is likely to generate congestion and there
>>     is no way that a browser platform should permit an application to do
>>     that.
>         I don't understand the congestion argument, so please help me
>     understand.
>         What will happen if we start at 3MBit, versus slowly
>     increasing bandwidth usage up to 3Mbit in the following cases?
>      1. The pipe is a synchronous 2MBit line
>      2. The pipe is a synchronous 4MBit line
>         For case #1, if the initial fence is minBandwidth = 3MBit, I
>     expect the callback to get invoked right away and it either
>     aborting the application or reducing the video resolution and
>     minimum bandwidth. In the case of a gradual ramp-up, I expect the
>     same end-result (callback getting invoked) but it will take longer
>     to occur and will take place at the 2MBit mark.
>         For case #2, I expect both scenarios (immediate vs ramp-up) to
>     be identical.
>         Did I miss anything?
>     Thanks,
>     Gili
Received on Sunday, 28 July 2013 19:53:07 UTC

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