I didn’t sign up for this abuse. Bellhead eh? Well f**k off! I’ve had enough - bye.
> On 25 Jul 2020, at 18:48, David P. Reed <dpr...@deepplum.com> wrote: > > This idea (dividing the link rate capacity, since "bandwidth" is an incorrect > term not to be promulgated), is absurd, but typical of "bellhead" thinking. > > Per packet latency is the key control variable, even for TCP. That's because > capacity/rate is not controllable by routers, but by routing in a general > Internet situation. > > Latency is controlled by queuing delay in a packet network, not bitrate. And > in mixed traffic, which after all is why traffic is classified in the first > place, by its characteristics and response to increased latency end-to-end, > is the core "control" for the internetwork as a whole. > > So, by promoting thinking about "bandwidth" a whole sequence of > misformulations of network management is embedded into the thinking of those > designing queue management algorithms. > > And make no mistake, queue management is the ONLY knob other than sending > different packets on different routes that one has for routers. > > I don't know who proposed this fractional division, but it is clearly a > bellhead-influenced thinker who thinks all protocols are CBR flows like in > the old phone system. > > But almost no flows in the internet are CBR flows! File transfers are not, > streaming TV is not, web ttraffic is not, game traffic is not. Only > non-statistically multiplexed real-time telephony and *some* video > conferencing is CBR. > > Yet this bizarre idea of dividing "bandwidth" among all categories of flows > pops up. Probably from employees of phone companies or phone equipment > suppliers. Or folks who went to Uni and were trained in "communications" by > former phone engineers. > > Latency, latency, latency. Queue delay, queue delay, queue delay. Not link > speed! Change your brains. > > It's hard fo fight this bellhead crowd (or the bellheadedness in your own > thinking) but think about packets and queues instead. > > My good friend Len Kleinrock didn't invent "Bandwidth Theory"! He invented > Queueing Theory. For a reason. > > On Saturday, July 25, 2020 6:12am, "Kevin Darbyshire-Bryant" > <ke...@darbyshire-bryant.me.uk> said: > > > _______________________________________________ > > Cake mailing list > > Cake@lists.bufferbloat.net > > https://lists.bufferbloat.net/listinfo/cake > > > > > > > On 24 Jul 2020, at 18:42, Kevin Darbyshire-Bryant > > <ke...@darbyshire-bryant.me.uk> wrote: > > > > > > > > > The move from diffserv4 to diffserv5 WAS about de-prioritization. > > > > It was also about minimum bandwidth allocations: > > > > LE: 1/64th > > BK: 1/16th > > BE: 1/1 > > VI: 1/2 > > VO: 1/4 > > > > So worst case, best effort should get 11/64ths in the extreme case of all > > other > > tins in use. > > > > Cheers, > > > > Kevin D-B > > > > gpg: 012C ACB2 28C6 C53E 9775 9123 B3A2 389B 9DE2 334A > > > > Cheers, Kevin D-B gpg: 012C ACB2 28C6 C53E 9775 9123 B3A2 389B 9DE2 334A
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