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 <[email protected]> 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:[email protected]
http://kn.inf.uni-tuebingen.de
_______________________________________________
Bloat mailing list
[email protected]
https://lists.bufferbloat.net/listinfo/bloat
