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Bufferbloat on variable bandwidth (mobile LTE/5G) #59

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NextBlaubeere opened this issue Jul 22, 2021 · 3 comments
Open

Bufferbloat on variable bandwidth (mobile LTE/5G) #59

NextBlaubeere opened this issue Jul 22, 2021 · 3 comments

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@NextBlaubeere
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Is there any development ongoing for handling bufferbloat with variable bandwidths?

For a lot of volks LTE/5G is the only option for their internet access and therefore have to deal with variable bandwidth.
In my case the download bandwidth varies from 30 to 130 Mbit/s (Download) 30 to 45 Mbit/s (Upload) which makes every algorithm with fixed bandwith unuseable, if you do not want to go with the minimum of 30 Mbit/s.

best regards

@tohojo
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tohojo commented Jul 22, 2021 via email

@dtaht
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dtaht commented Jul 24, 2021

More generally however, so long as the interface presents a "line" rate with minimal buffering to fq_codel, it works, even if it is wildly variable.

So, fq_codel for wifi, does that. But ethernet with hw flow control, or anything that can use bql or aql (which 4g/5g can do)
would just work...

IF fq_codel + aql were running directly on the 4g/5g device driver.

@dtaht
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dtaht commented Jul 24, 2021

I note that I gave up. I just use the presented minimum, because I like my phone calls and videocoferencing to always just work.

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