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Re: 4MBs transfer rate followed seconds later by reduction to 0.8MBs

From: Daniel Stenberg <>
Date: Thu, 9 Feb 2017 23:33:20 +0100 (CET)

On Thu, 9 Feb 2017, David Niklas wrote:

> I'm at the ITEXPO (asterisk) in US -> Florida -> Ft Lauderdale. Whenever I
> connect to get a file I get a massive transfer speed of 4MBs (unless I am
> already downloading something in which case the speed is slower), after
> roughly 5s the speed drops down to 0.8MBs

That sounds like behavior totally imposed by something outside of curl - some
sort of "traffic shaping". curl has no behavior that makes it change speeds in
any particular way after a certain time (unless you artificially limits its
rate). And your description matches nothing I've ever experienced.

If you download a huge file from localhost instead you can verify for

Received on 2017-02-09