Tuesday, October 20, 2020

FTTH 1Gbps speedtests and discrepancies

Hey all, I work for a new FTTH ISP in the UK. We have a Speedtest server in our DC in London (3ms from customers), and with our EXFO EX1 speedtester and certain laptops we're able to get our full offering of 950/950Mbps - No problem. (all tests I'm discussing are HARDWIRED as of course wireless is a completely different story)

However, things get a bit weird sometimes. I went to one of our customer's houses and tested with all of their machines and got varied results, never consistent (400/900, 800/500, etc). These were all Win10 laptops - one of them quite recent with a decent Ryzen 3700. From his house, my EXFO tester got an excellent 950/950 consistently.

So, clearly this customer has a perfect service - and it is just their machines. Unfortunately, I really cannot provide any good explanation for this to the customer. Typically I claim their device isn't high-powered enough and is CPU limited, but in this instance that was certainly not the case.

Therefore, my presumption is the bottleneck is actually to do with either the NIC chipset/drivers or Win10 OS. Does anyone know what the true bottleneck is?

I find it really shocking that even in 2020 a lot of PCs can't handle hardwired gigabit connections.



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