3 ms·

Upload on docsis 3.1 cable plant in limited. It is a contention based tdma system. Besides technical limitation, spectrum is just a crappy isp with shady pract

• pas 6y ago
  It's already drastically asymmetric, 940/35. The problem is that the local backhaul node is so oversubscribed that simply maxing out 2 of these upload slots somehow causes a problem for all the other subscribers. The subscriber is already paying 270 USD per month. Holy fuck. That's daylight robbery. https://www.reddit.com/r/DataHoarder/comments/moqskr/spectrum_upset_about_me_using_the_upload_they/gu5lyvn/ https://www.reddit.com/r/DataHoarder/comments/moqskr/spectru...
  • Rebelgecko 6y ago
    At what point do limited upload speeds actually slow down your downloads due to TCP overhead?
    • pas 6y ago
      The (IPv4) ACK packet is 40 bytes, smaller than the minimum frame data for Ethernet (46 bytes, gets padded). Since TCP has exponential window sizing, it can ACK gigabytes in just one go, right? But we would need to know the latency (round trip time) to calculate the max bandwidth delay product (max data in flight).