Re: [Bloat] Solving bufferbloat with TCP using packet delay

2013-04-03 Thread Juliusz Chroboczek
> - Is TCP using packet delay considered as part of the solution for > bufferbloat? Not on this list, apparently. However, there has been a fair amount of research on that approach in the late noughts. I'd suggest you search for papers on TCP Vegas, TCP-LP and LEDBAT. In particular, LEDBAT is v

Re: [Bloat] Solving bufferbloat with TCP using packet delay

2013-04-03 Thread Juliusz Chroboczek
> But it is hard, and the delay based algorithms are fundamentally > flawed because they see reverse path delay and cross traffic as false > positives. I'm not sure what you mean. All modern delay-based congestion algorithms that I am aware of use one-way delay as an indicator of congestion, not

Re: [Bloat] Solving bufferbloat with TCP using packet delay

2013-04-03 Thread Hagen Paul Pfeifer
* Juliusz Chroboczek | 2013-04-03 20:16:50 [+0200]: >> But it is hard, and the delay based algorithms are fundamentally >> flawed because they see reverse path delay and cross traffic as false >> positives. > >I'm not sure what you mean. All modern delay-based congestion >algorithms that I am awa

Re: [Bloat] Solving bufferbloat with TCP using packet delay

2013-04-03 Thread Juliusz Chroboczek
>> All modern delay-based congestion algorithms that I am aware of use >> one-way delay as an indicator of congestion, not RTT. > It depends on what you define as modern [...] Vegas? Yeah-TCP? Nope. Vegas is some 20 years old, if memory serves. I'm not familiar with Yeah-TCP. (TCP-LP and LEDBAT

Re: [Bloat] Solving bufferbloat with TCP using packet delay

2013-04-03 Thread Simon Barber
Is your TCP mod available? This would be useful on Android phones, to avoid background downloads (e.g. updates) from disrupting applications (Skype). Simon On 03/20/2013 06:01 PM, Jonathan Morton wrote: One beneficial approach is to focus on the receive side rather than the send side. It is