>> On Sat, Oct 22, 2011 at 8:14 PM, Edward Ned Harvey >> <lop...@nedharvey.com> wrote: >> >> Actually, 802.11 is about 50% wasted overhead, even in a perfectly clean >> environment (where you use insulated coax to directly wire the antenna of >> one system to the antenna of another system). In reality, there is noise >> and slower traffic, which slows everybody down because the bandwidth is >> shared. >> >> So only in the absolute perfect world, full of free drugs and hookers >> handing out money and winning lottery tickets, using present technology, >> could you even *dream* of going any faster than 100Mbit on 802.11. When >> they advertise 300Mbit+, it's pure marketing, raw idealistic bandwidth, not >> even close to measurable usable or realistic bandwidth. >> > > From: tech-boun...@lists.lopsa.org [mailto:tech-boun...@lists.lopsa.org] > On Behalf Of Dan Parsons > > Obligatory iperf output from Macbook Air over 5GHz 802.11n to a Linux > machine connected via gigabit ethernet to a latest-generation Airport > Extreme: > > [ ID] Interval Transfer Bandwidth > [ 4] 0.0-10.0 sec 181 MBytes 152 Mbits/sec
Sounds like you're using a 300Mbit router, in a rural or suburban setting, in a wooden house with a dugout basement and the router is centrally located... Or while everyone else is asleep (somehow no traffic from the apartment upstairs or downstairs interfering) getting about 50% overhead, while the microwave isn't running and there are no vacuum cleaners in use, while nothing else is happening on your wifi at the same time, right? The linux machine is on a wire. The only traffic is generated to/from your laptop, which is nearby the airport with perfect signal quality (not penetrating any brick walls or elevator shafts, no significant reflections from nearby concrete or metal walls or floors) AKA, in the absolute perfect circumstance, this is what you see. Measured 152 Mbit/sec _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
