Dave Collier-Brown <[email protected]> wrote: > Only being able to use 20% of the bandwidth is clearly not good (on 4G > the same algorithms achieve > 50-70%). BBR<https://blog.acolyer.org/2017/03/31/bbr-congestion-based-congestion-control/> > does much better with 5G, achieving 82.5% utilization. An investigation > reveals the problem to be caused by buffer sizes. In the radio portion > of the network, 5G buffer sizes are 5x 4G, but within the wired portion > of the network only about 2.5x (this is with a 1000 Mbps provisioned > cloud server). At the same time the download capacity of 5G is about 5x > greater: "i.e., the capacity growth is incommensurate with the buffer > size expansion in the wireline network." Doubling the wireline buffer > size would alleviate the problem. BBR does better because it is less > sensitive to packet loss/delay.
Is this with one flow or many thousands one would expect a real network to have? Since we want buffers to be empty, it's unclear to me if TxOps are really being lost, or what. -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | IoT architect [ ] [email protected] http://www.sandelman.ca/ | ruby on rails [
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