On 04/29/2014 07:01 PM, Toke Høiland-Jørgensen wrote: > However, as that graph shows, it is quite possible to completely avoid > bufferbloat by deploying the right shaping. And in that case fibre > *does* have a significant latency advantage. The best latency I've seen > to the upstream gateway on DSL has been ~12 ms.
I am not an expert, but I believe that this is due to the use of interleaving. This is a method to improve the strength of forward error correction by spreading out the effects of impulse noise on DSL lines across multiple reed-solomon-protected codewords at the expense of latency. The topic is briefly discussed on the ADSL Wikipedia page. _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
