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

submitted 2 years ago by HumanPerson@sh.itjust.works to c/selfhosted@lemmy.world

4 comments fedilink hide all child comments

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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[–] walden@sub.wetshaving.social 0 points 2 years ago (2 children)

Interesting. I'd be interested in hearing other people's experience with this. Is this BBR stuff enabled by default on any distros?

[–] HumanPerson@sh.itjust.works 1 points 2 years ago

I don't know if it is, but it is really as simple as adding to lines to a config file and restarting a service.

[–] Nanabaz2@lemmy.world 1 points 2 years ago (1 children)

According to multiple debian based and ubuntu based and Arch I use. No. Not default. Cubic still is.

My experience was that some days ago I was trying to make my UDP faster, but turned out found out about BBR - for TCP. Well, lucky me - currently some country away from home for family reason. Plex generally takes 40-80s to start a movie/episode for me. And measly about 10s max buffer available - and this is on a 3-5Mbps show.

After BBR (note I have to apply on Proxmox host, my container are unprivileged and can't set this themselves), I got 8-30s max to start a show/movie. And now comfortably sit between some good minutes on buffer. 15-20Mbps quality now playable.

To me personally it was black magic, and I was tossing it in just 2 days ago too

Ask more if question

[–] Untitled4774@sh.itjust.works 1 points 2 years ago

If this is black magic, will I be subject to some sort of witch trial in the near future?