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Speed Test

speed.cloudflare.com

31–40 of 216 posts

Re: Speed Test

#31
post #28

Where I am, ISPs have arrangements to give intra-country traffic higher speed than inter-country. The nearest cloudflare PoP this chooses is always inside the country, so it gives misleading result.

This is why it's important to consult multiple speed tests, because it's not really a general "internet speed test", rather a "connection speed test" with a particular server.

Re: Speed Test

#32
post #13

Earlier quoted context omitted.

Got a source for ISPs doing that for fast.com? Fast.com is netflix, so the same argument applies there - if you get 300mbps on fast.com you should get it on netflix too

This is why Netflix runs fast.com, so that if an ISP wants to cheat on speed tests, people are still going to get those cheated speeds even when they stream real Netflix videos. Really clever.

And the other way around, if they throttle Netflix then that'll show up in the speed tests.

Re: Speed Test

#33
post #27

Uff. Apparently gives correct readings mostly in Chrome only. I have a 500/500M connection and on the same computer Chrome gives 465/364 and Firefox has 311/303M. EDIT: this was on Linux/intel. On Mac M1Pro it Chrome/FF/Safari all get pretty much the same numbers. Both computers have wired ethernet.

I've ran it multiple times in Chrome only and got vastly different results just there, from 200 to 600 down on a 500 connection. Must be heavily dependant on moment-to-moment network conditions I guess, to the point where it's nigh useless.

Re: Speed Test

#34
post #16

Pretty much spot on for me. 2gig/1gig fiber internet and I got 1.95 Gbps/960 Mbps

Wow that’s fast.

Genuine question: what’s it like having internet that fast?

Because I get 40-50Mbps down and ~16 Mbps down on that tool, and I have fibre to the property (yay, Australia) and I’m so curious to know what’s it like to have a connection that’s actually good.

Re: Speed Test

#35
post #27

Uff. Apparently gives correct readings mostly in Chrome only. I have a 500/500M connection and on the same computer Chrome gives 465/364 and Firefox has 311/303M. EDIT: this was on Linux/intel. On Mac M1Pro it Chrome/FF/Safari all get pretty much the same numbers. Both computers have wired ethernet.

Did you end up on the same server every time? The Atlanta server seems to be OK at the moment.

https://i.imgur.com/SnA9rfH.png

Re: Speed Test

#36

btw, on macOS, you can just enter `networkQuality` into your terminal for a speed test. No third-party website or tool of any kind needed, it's a built-in mac CLI.

Who's it measuring against? An (internet) speed test by its nature requires some remote third-party, if you aren't just testing to your own server

Default is Apple’s infra, but you can choose via a config flag. You can also run your own: https://github.com/network-quality/server

Re: Speed Test

#37
There's no way I'm getting over 500Mbps on my Telekom phone data in this elevator right now.

EDIT: fast.com is showing 1Gbps. There's no way that's true.

Re: Speed Test

#38
post #27

Uff. Apparently gives correct readings mostly in Chrome only. I have a 500/500M connection and on the same computer Chrome gives 465/364 and Firefox has 311/303M. EDIT: this was on Linux/intel. On Mac M1Pro it Chrome/FF/Safari all get pretty much the same numbers. Both computers have wired ethernet.

I think this is likely to be related to the way different browsers implement time.

In an effort to improve security, browsers reduce fidelity & accuracy on results from the `performance.now()` timer methods. If you attempt to call `performance.now()`, and then call it again within 100 microseconds, your second result isn't guaranteed to be in the future compared to the first result.

https://developer.mozilla.org/en-US/docs/Web/API/Performance...

If you're implementing a speedtest feature, you'd likely run `performance.now()` iteratively as your high-resolution-timer, and compare that to the number of bytes downloaded. Browsers that perform more significant coarsing will return worse metric-per-second results in that scenario.

Re: Speed Test

#39
You also probably need some internal/LAN speed measurement tools. When your wifi link is over-crowded, measuring your uplink isn't much use. I use iperf3.

Re: Speed Test

#40

305 Mbps for me. Cringy how slow internet connetivity is in the UK.

Are you in London? My 1Gbps link gives 800-900Mbps in these speed tests, and I'm fine with that. It's a pitty that some of that is unused because I need to use a VPN.

When I lived in a small town, my 500Mbps would give me >400Mbps consistently.

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