Are you asking what they _should_ be, or what the typical buffering seen in equipment actually is? On Wed, Mar 9, 2022 at 9:39 AM Michael Menth wrote: > Hi all, > > I don't question the usefulness of AQMs for buffers - on the contrary. > But what are up-to-date buffer sizes in networking gears, especially if > AQMs are not in use? It's hard to find public and information about it. > Anyone can point to a citable source? > > This raises also the question about the deployment of AQMs in networking > infrastructure. I know it's already adopted by some OSs, but what about > forwarding nodes? Any papers about it? > > Kind regards > > Michael > > Am 09.03.2022 um 18:24 schrieb Jesper Dangaard Brouer: > > > > > > On 09/03/2022 17.31, Toke Høiland-Jørgensen via Bloat wrote: > >> Michael Menth writes: > >> > >>> Hi all, > >>> > >>> are there up-to-date references giving evidence about typical buffer > >>> sizes for various link speeds and technologies? > >> > >> Heh. There was a whole workshop on it a couple of years ago; not sure if > >> it concluded anything: http://buffer-workshop.stanford.edu/program/ > >> > >> But really, asking about buffer sizing is missing the point; if you have > >> static buffers with no other management (like AQM and FQ) you're most > >> likely already doing it wrong... :) > > > > Exactly, I agree with Toke. The important parameter is the latency. > > Or the packet sojourn time (rfc8289 + rfc8290) observed waiting in the > > queue. > > > > The question you should be asking is: > > - What is the max queue latency I'm "willing" to experience on this > link? > > > > Hint, you can then depending on the link rate calculate the max buffer > > size you should configure. > > > > The short solution is: > > - just use fq_codel (rfc8290) as the default qdisc. > > > > --Jesper > > > > > > > > -- > Prof. Dr. habil. Michael Menth > University of Tuebingen > Faculty of Science > Department of Computer Science > Chair of Communication Networks > Sand 13, 72076 Tuebingen, Germany > phone: (+49)-7071/29-70505 > fax: (+49)-7071/29-5220 > mailto:menth@uni-tuebingen.de > http://kn.inf.uni-tuebingen.de > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat > -- - Sent from my iPhone.