[aqm] Questioning the goal of a hard delay target

2015-07-03 Thread Bob Briscoe
AQM chairs and list, 1) Delay-loss tradeoff We (Koen de Schepper and I) have designed an AQM aimed at removing the need for low delay QoS classes, initially as a cost/complexity reduction exercise for broadband remote access servers (BRASs). One of the requirements given to us was: * As

Re: [aqm] Questioning the goal of a hard delay target

2015-07-03 Thread Simon Barber
Hi Bob, Very interesting to see this. I had just recently privately proposed an extension to Codel - to auto tune the target parameter. The proposal is to observe the characteristics that are exhibited when target is too large or too small, and make adjustments appropriately. i.e. if you make

Re: [aqm] Questioning the goal of a hard delay target

2015-07-03 Thread Bob Briscoe
Simon, Y, if you're going to start autoadjusting a hard-coded parameter, you have to first question whether it was right to choose that parameter to hard-code in the first place. Bob On 03/07/15 18:34, Simon Barber wrote: Hi Bob, Very interesting to see this. I had just recently

Re: [aqm] Questioning the goal of a hard delay target

2015-07-03 Thread Dave Taht
On Fri, Jul 3, 2015 at 10:42 AM, Bob Briscoe i...@bobbriscoe.net wrote: Simon, Y, if you're going to start autoadjusting a hard-coded parameter, you have to first question whether it was right to choose that parameter to hard-code in the first place. In codel, target was never a hardcoded