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Increase your Linux Server Internet Speed with TCP BBR Congestion-Control (www.cyberciti.biz)

submitted 7 months ago by HumanPerson@sh.itjust.works to c/selfhosted@lemmy.world

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I recently found this on Reddit while looking into why jellyfin is effected so much by latency. I found that this worked and thought I would share it because it is generally applicable, takes five minutes to setup, and helps a lot with bandwidth on higher latency connections. I admit I am not sure of the technical stuff behind this, so if anyone would like to chime in that would be much appreciated.

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[–] catch22@startrek.website 24 points 7 months ago* (last edited 7 months ago)

Cool! This seems like an good write up on it

https://atoonk.medium.com/tcp-bbr-exploring-tcp-congestion-control-84c9c11dc3a9

Bottleneck Bandwidth and Round-trip propagation time (BBR) is a TCP congestion control algorithm developed at Google in 2016. Up until recently, the Internet has primarily used loss-based congestion control, relying only on indications of lost packets as the signal to slow down the sending rate. This worked decently well, but the networks have changed. We have much more bandwidth than ever before; The Internet is generally more reliable now, and we see new things such as bufferbloat that impact latency. BBR tackles this with a ground-up rewrite of congestion control, and it uses latency, instead of lost packets as a primary factor to determine the sending rate.