Proving Gig Speed

Matthew Crocker matthew at
Mon Jul 16 18:06:50 UTC 2018

I'm on a Mac and launch 40 speedtests at the same time and monitor interface bandwidth


for i in `./speedtest-cli --list | cut -f1 -d')' | head -n 40`; do ./speedtest-cli --server $i & done

I've been able to saturate 10G links with this method

Matthew Crocker
Crocker Communications, Inc.

´╗┐On 7/16/18, 1:59 PM, "NANOG on behalf of Chris Gross" <nanog-bounces at on behalf of CGross at> wrote:

    I'm curious what people here have found as a good standard for providing solid speedtest results to customers. All our techs have Dell laptops of various models, but we always hit 100% CPU when doing a Ookla speedtest for a server we have on site. So then if you have a customer paying for 600M or 1000M symmetric, they get mad and demand you prove it's full speed. At that point we have to roll out different people with JDSU's to test and prove it's functional where a Ookla result would substitute fine if we didn't have crummy laptops possibly. Even though from what I can see on some google results, we exceed the standards several providers call for.
    Most of these complaints come from the typical "power" internet user of course that never actually uses more than 50M sustained paying for a residential connection, so running a circuit test on each turn up is uncalled for.
    Anyone have any suggestions of the requirements (CPU/RAM/etc) for a laptop that can actually do symmetric gig, a rugged small inexpensive device we can roll with instead to prove, or any other weird solution involving ritual sacrifice that isn't too offensive to the eyes?

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