5 ms·

Lots of people here have already mentioned the Netflix fast.com test, which is indeed good. But also worthy of recommendation IHMO is the Cloudflare one (speed

Lots of people here have already mentioned the Netflix fast.com test, which is indeed good. But also worthy of recommendation IHMO is the Cloudflare one (speed.cloudflare.com). Main reason I say that is its one of the few that measures jitter (or at least openly exposes the measurement).

vmception 5y ago
Fast doesnt do upload
- jtc331 5y ago
  It actually does -- you just have to click "Show more info".
- traceroute66 5y ago
  > Fast doesnt do upload It does but it's hidden, you have to hit "Show more info" (once the main test has finished). A bit stupid, but I'm sure some committee thought it was an awesome idea to do it that way.
  - vmception 5y ago
    Where is this on mobile? I went to fast.com Is it after the speed test is over?
    - traceroute66 5y ago
      > Is it after the speed test is over? Yeah, you have to let it run thorough first, then the button appears. (At least on desktop, I can't remember what it does on mobile)
  - WanderPanda 5y ago
    Makes sense to me. The point is that the speed test traffic pretends to be netflix traffic which is mainly download. The upload to other servers could be limited by the ISP while being unlocked for netflix with low cost (because people don‘t upload a lot towards netflix). So there is less signal in the fast.com upload speed measurement
butz 5y ago
Interesting, while fast.com and speed.cloudflare.com got the same download speed, upload speed was much lower on cloudflare, but cloudflare used test server, that is geographically closer.
dataflow 5y ago
CloudFlare one is giving me less than 1/3 the download speed fast.com shows, and in fact, testing by downloading a Linux ISO [1], the latter seems to be the correct one. I don't know what CloudFlare's test is doing (their server is geographically nearby) but I obviously can't trust their measurement. [1] https://mirrors.edge.kernel.org/archlinux/iso/2022.04.05/archlinux-2022.04.05-x86_64.iso https://mirrors.edge.kernel.org/archlinux/iso/2022.04.05/arc...
- FrenchDevRemote 5y ago
  That's probably due to your ISP imo, they're known to favor some routes/servers Or the cabling to the cloudfare server is worse than to other servers
  - dataflow 5y ago
    My ISP is unlikely to be a problem. I literally get higher speeds downloading from servers across the world in Australia [1] than from CloudFlare's benchmark. Something around CF's side is funny, not mine. I'm looking at the network tab, it seems like they send a ton of small requests instead of a large one... which might point in the direction of the problem. [1] https://syd.mirror.rackspace.com/archlinux/iso/2022.04.05/archlinux-2022.04.05-x86_64.iso https://syd.mirror.rackspace.com/archlinux/iso/2022.04.05/ar...
    - MinorTom 5y ago
      The issue is likely not with Cloudflare, but with the connection between your ISP and Cloudflare. That's why this speed test is relevant - if your ISP can't manage to make good, settlement free* connections (=peering) to Cf it's not a good ISP. Example: Rackspace Sydney (AS58683) has (likely paid) peering with AS7474, who has peering with German Deutsche Telekom (AS3320). Peering with DT is significantly more expensive than many others because they have a regional monopoly. * Cloudflare is present at many regional Internet Exchanges and any good ISP connects to these, too. Some don't, however, like Deutsche Telekom.
      - 5y ago
max23_ 5y ago
TIL, I didn't know Cloudflare has one and usually use fast.com Nice to see the tests are breakdown with more info when hovering or expanding them.
fsflover 5y ago
There is also a test based on free software: https://librespeed.org/ https://librespeed.org/.

vmception 5y ago

Fast doesnt do upload

jtc331 5y ago
It actually does -- you just have to click "Show more info".
traceroute66 5y ago
> Fast doesnt do upload It does but it's hidden, you have to hit "Show more info" (once the main test has finished). A bit stupid, but I'm sure some committee thought it was an awesome idea to do it that way.
- vmception 5y ago
  Where is this on mobile? I went to fast.com Is it after the speed test is over?
  - traceroute66 5y ago
    > Is it after the speed test is over? Yeah, you have to let it run thorough first, then the button appears. (At least on desktop, I can't remember what it does on mobile)
- WanderPanda 5y ago
  Makes sense to me. The point is that the speed test traffic pretends to be netflix traffic which is mainly download. The upload to other servers could be limited by the ISP while being unlocked for netflix with low cost (because people don‘t upload a lot towards netflix). So there is less signal in the fast.com upload speed measurement

butz 5y ago

Interesting, while fast.com and speed.cloudflare.com got the same download speed, upload speed was much lower on cloudflare, but cloudflare used test server, that is geographically closer.

dataflow 5y ago

CloudFlare one is giving me less than 1/3 the download speed fast.com shows, and in fact, testing by downloading a Linux ISO [1], the latter seems to be the correct one. I don't know what CloudFlare's test is doing (their server is geographically nearby) but I obviously can't trust their measurement. [1] https://mirrors.edge.kernel.org/archlinux/iso/2022.04.05/archlinux-2022.04.05-x86_64.iso https://mirrors.edge.kernel.org/archlinux/iso/2022.04.05/arc...

FrenchDevRemote 5y ago
That's probably due to your ISP imo, they're known to favor some routes/servers Or the cabling to the cloudfare server is worse than to other servers
- dataflow 5y ago
  My ISP is unlikely to be a problem. I literally get higher speeds downloading from servers across the world in Australia [1] than from CloudFlare's benchmark. Something around CF's side is funny, not mine. I'm looking at the network tab, it seems like they send a ton of small requests instead of a large one... which might point in the direction of the problem. [1] https://syd.mirror.rackspace.com/archlinux/iso/2022.04.05/archlinux-2022.04.05-x86_64.iso https://syd.mirror.rackspace.com/archlinux/iso/2022.04.05/ar...
  - MinorTom 5y ago
    The issue is likely not with Cloudflare, but with the connection between your ISP and Cloudflare. That's why this speed test is relevant - if your ISP can't manage to make good, settlement free* connections (=peering) to Cf it's not a good ISP. Example: Rackspace Sydney (AS58683) has (likely paid) peering with AS7474, who has peering with German Deutsche Telekom (AS3320). Peering with DT is significantly more expensive than many others because they have a regional monopoly. * Cloudflare is present at many regional Internet Exchanges and any good ISP connects to these, too. Some don't, however, like Deutsche Telekom.
    - 5y ago

max23_ 5y ago

TIL, I didn't know Cloudflare has one and usually use fast.com Nice to see the tests are breakdown with more info when hovering or expanding them.

fsflover 5y ago

There is also a test based on free software: https://librespeed.org/ https://librespeed.org/.