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.

  • catch22@startrek.website
    link
    fedilink
    English
    arrow-up
    20
    ·
    2 years 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.

  • Pixel@lemmy.ca
    link
    fedilink
    English
    arrow-up
    3
    ·
    2 years ago

    Cool writeup. I remember implementing BBR many years ago when I was trying to bypass the Great Firewall for an extended stay. Helped deal greatly with the huge congestion on Chinanet backbone at the time, but it’s less of an issue these days now that foreigners can use CN2.

    • Gooey0210@sh.itjust.works
      link
      fedilink
      English
      arrow-up
      2
      ·
      2 years ago

      Sorry, what is CN2?

      If it’s any solution CCP provides, I wouldn’t trust it anyway

      The great firewall situation was always interesting, because if you would use a roaming Sim, then you will be able to access anything

      • Pixel@lemmy.ca
        link
        fedilink
        English
        arrow-up
        3
        ·
        2 years ago

        The great firewall situation was always interesting, because if you would use a roaming Sim, then you will be able to access anything

        Roaming SIMs work because the APN sets a network routing path outside of China.