> On 19 Sep, 2023, at 1:52 am, dave seddon <dave.seddon...@gmail.com> wrote: > > I'd love to understand the difference between the tests I've been doing and > your tests. > • How many TCP flows did you have please ( cake performance seems to > drop significantly with increased number of TCP flows, although I need to do > more testing to understand why )?
It's almost certainly related to the extremely tight AQM settings you imposed on it, and on no other AQM you tested. > • What was the RTT? I think this was just in a LAN environment, to gauge the capabilities of the machine just as you're doing. We insert a delay in the middle when testing other things, such as the performance and fine-scale behaviour of a qdisc/CC combination. > • Load tool? I believe Pete was using iperf3 for this, or possibly Flent which delegates to netperf. These days he's developing something new along the same lines. A simple test using one or more of Flent's standard tests should be enough to replicate these results, at least approximately. I would also recommend using ECN, but you should get at least reasonable results without it, provided the AQM is set sanely. - Jonathan Morton _______________________________________________ Cake mailing list Cake@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cake
