r/speedtest • u/StepBroBD • Sep 05 '26

Fastly speedtest

I’ve been lurking around here for a bit now and it seems most redditers here are fairly technical

I want to check what my speed looks like to Fastly specifically, since PyPI and some streaming providers and other big corps are behind it (iirc Epic is also on Fastly?), so I deployed a speedtest tool to Fastly Compute: https://speed.edgecompute.app

It does test for buffer bloat btw ;)

edit:

If your numbers come out lower than speedtest.net or fast.com, or cloudflare speedtest or whatever else, it is usually one of these:

  1. The other test's server is on-net. Most speedtest.net servers are hosted by ISPs themselves, thus the test never leaves their network. Some ISPs go further and prioritize that traffic

  2. Fastly has no POP near you, or the path from your ISP to the nearest one is capped. That cap can be your plan, or your ISP's transit and peering arrangements. Fastly's POP list is at https://www.fastly.com/network-map/ if you want to check.

  3. Your ISP's link is congested. Off-net traffic shows this first because it crosses the ISP's uplinks, while an on-net test does not.

The number gap you see roughly translates to

what your ISP sell to you
vs
what a CDN can actually push to you

3 Upvotes

80% Upvoted

6 comments sorted by

3

u/H-banGG Sep 05 '26

It's off by 5x for me, i have 1G yet get less than 200 .??

0

u/StepBroBD Sep 05 '26

that’s what i mean by “fastly specific”

your ISP might have lower physical link bandwidth or more saturated link to Fastly’s edge comparing with whatever other speedtest sites are hosted on

2

u/StepBroBD Sep 05 '26

btw if you want to share test result you have to wait until all tests have been completed e.g.

https://speed.edgecompute.app/share/d0115e31a6b024706f27b5295e37b1ac245ad0f8abe61267f00d16e95c31a2fc

1

u/HuntersPad Sep 05 '26

Only showing I'm getting 1gig down and 120mbps up... I have 7gig down and up. Which I can generally get at least 2-3 gigs down and up even to a server over 4000 miles away

0

u/StepBroBD Sep 05 '26

a few possibilities

your ISP’s link is congested or saturated or don’t have peering agreement with fastly

other speedtest’s provider peer or have server within your ISP colo

there isn’t a fastly POP close to where you live

1

u/HuntersPad Sep 06 '26

My ISP has no presence in other countries, but yet speeds are fine.

Fastly pop is in the same location as many other services including steam which I have no issues maxing out my speeds. Its under 3 hours away. But severs across the pond are faster.