Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test

[Nick Hilliard <nick () foobar org>]

On 3 Apr 2013, at 23:41, Warren Bailey <wbailey () satelliteintelligencegroup com> wrote:
> They may do some magic with bandwidth delay products.. If that was the case, they may have written it for a standard 
> latency versus something that is unreasonable by interweb standards. 

I don't know how they calculate bandwidth, but I was surprised that their system gave such wrong results under what 
were effectively lab conditions. 

Nick

> Sent from my T-Mobile 4G LTE Device
>
>
>
> -------- Original message --------
> From: Nick Hilliard <nick () foobar org> 
> Date: 04/03/2013 3:35 PM (GMT-08:00) 
> To: Warren Bailey <wbailey () satelliteintelligencegroup com> 
> Cc: Valdis.Kletnieks () vt edu,nanog () nanog org 
> Subject: Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test 
>
>
> On 3 Apr 2013, at 23:20, Warren Bailey <wbailey () satelliteintelligencegroup com> wrote:
> > Try it with upwards of 900ms of variable latency. 
>
> The last crazy result I got was 146mbit/s on a hardwired 100 mbit link  and 1-2ms latency to the speedtest.net server 
> I was using at the time (same data centre).  Testing this sort of thing with high latency and jitter is 
> understandably hard, but I didn't see a good reason at the time why it should have been so badly out with good 
> underlying network characteristics.
>
> Nick
>
>
>
> > Sent from my T-Mobile 4G LTE Device
> >
> >
> >
> > -------- Original message --------
> > From: Nick Hilliard <nick () foobar org> 
> > Date: 04/03/2013 3:04 PM (GMT-08:00) 
> > To: Valdis.Kletnieks () vt edu 
> > Cc: nanog () nanog org 
> > Subject: Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test 
> >
> >
> > On 3 Apr 2013, at 22:48, Valdis.Kletnieks () vt edu wrote:
> > > (If anybody's got evidence of it reporting more than the link is technically
> > > capable of, feel free to correct me...)
> >
> > I've seen speedtest.net give results significantly greater than the physical bw of the client's network link.
> >
> > Nick