[Nottingham] The arguments with WiFi continue

[Martin]

On 19/05/16 09:31, Jason Irwin via Nottingham wrote:
> On 15/05/16 19:16, Jason Irwin wrote:
>> Minor addendum:
> Further addendum, and this gets weird.
> 
> Ethernet: ~950Mbps, seems legit, it's gigabit throughout the house.
> 5Ghz: ~30Mbps, OK...that's slow.
> 2.4Ghz: ~19Mbps, that's slower....
> 
> Now, for the weirdness.
> First off, I access fast.com over ethernet at get 150Mbps. That's
> expected, that's the speed of my downlink and it proves I'm not hitting
> some limit.
> I access it again over 5GHz from the exact same machine where I just ran
> all the above tests; what speed do I get reported? ~30MBps?
> No, 70+MBps. WTF?
> 
> I would blame DD-WRT but I have used two separate routers, one of which
> isn't DD-WRT, to check my LAN speed and both give the same results.
> 70Mbps still isn't great, but it's twice as fast as the test to my own
> server.
> That make no sense at all, unless "iperf" is giving wonky results or my
> comprehension of networking is even worse than I thought it was!

All very plausible...

Are you missing the effect of sometimes/sometimes-not aggregating the
multiple bandwidths from MIMO and multiple *band* operation?...

This WiFi stuff can get a little convoluted ;-)


Good luck for sleuthing...

Cheers,
Martin



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