On 28/05/2020 16:29, Wojciech Lesiak wrote:
I have double checked it and can't see any. Just to let you know that
parallel download is closing the circuit.
Does the far end have 2 routers into a switch? Is one router at 1G, and
one at 400M. And by fluke 2 downloads comes over 2 routers?
I'd test for bufferbloat too. How much does the ping time go up
when you are doing a single download? How much for multiple?
I had a leased line with all kind of go slows and latency. Turned out to
be bufferbloat caused by an optic not compatible with whatever it was
plugged into. Actually improved download speeds and latency by using
fq_codel with ECN on ingress.
(The ISP fixed their end eventually)
Is there a chance that in going from 500 to 1000, then the slowdown from
say the ISPs 10G network to your 1G network has moved from something
fair with small buffers, to something unfair with a massive buffer?
(usually see this at lower speeds though)
--
Tim Bray
Huddersfield, GB
[email protected]
+44 7966479015
