On Tue, Nov 14, 2023 at 11:06 AM Dave Taht wrote: > As I noted also on the twitter thread for this, were I there, and > dishonest, (particularly were gobs of money on the table) I could easily > have permuted the bandwidth on both tests hugely upwards from a single > laptop by running continuous speedtests. But speedtests are not what we do > day in or out, and reflect normal usage not at all. > > The 83% of people (experts!!!) that were wrong is ... mindboggling. > > PS What wifi standard was at ietf? Is this still the old ciscos? The > headline bandwidths claimed for any version of wifi drop dramatically at > distance and with multiple users present. So it might have taken a couple > laptops out of the thousand there to move the stats in a perverse > direction, now that I think about it. > > Thank you for doing this experiment! While there are certainly also cases > were mass groupings of people totally saturate the underlying mac (more > than the perceived bandwidth - I have seen congestion collapse and a sea of > retransmits even in small wifi gatherings), the only number that seems a > bit off in your test from a typical residential/small office is the > roughly 3.5x1 ratio between down and up. I am willing (for now) to put that > down to engineers doing actual work, rather than netflix. > CORRECTION! 3x1. my fingers wanted it to be 5x1 (which is quite common in many deployments), and then decided on their own to create 3.5x1... While there is no ideal up/down ratio I firmly believe that 5x1 should be the outside asymmetry, and there are compelling reasons. I would be perfectly happy with a 10/10 connection (with bufferbloat fixed), if only there was a way to pay for just that. > I would so love to see more measurements like this at other wifi > concentration points, in offices and coffee shops. Packet captures too!!!! > > On Tue, Nov 14, 2023 at 10:46 AM Livingood, Jason via Nnagain < > nnagain@lists.bufferbloat.net> wrote: > >> On the subject of how much bandwidth does one household need, here's a >> fun stat for you. >> >> >> >> At the IETF’s 118th meeting last >> week (Nov 4 – 10, 2023), there were over 1,000 engineers in attendance. At >> peak there were 870 devices connected to the WiFi network. Peak bandwidth >> usage: >> >> - Downstream peak ~750 Mbps >> - Upstream ~250 Mbps >> >> >> >> From my pre-meeting Twitter poll ( >> https://twitter.com/jlivingood/status/1720060429311901873): >> >> [image: A screenshot of a chat Description automatically generated] >> _______________________________________________ >> Nnagain mailing list >> Nnagain@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/nnagain >> > > > -- > :( My old R&D campus is up for sale: https://tinyurl.com/yurtlab > Dave Täht CSO, LibreQos > -- :( My old R&D campus is up for sale: https://tinyurl.com/yurtlab Dave Täht CSO, LibreQos