Speedtest Results speedtest.net vs Mikrotik bandwidth test

Wed Apr 3 23:12:49 UTC 2013

On 3 Apr 2013, at 23:41, Warren Bailey <wbailey at 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 at foobar.org> 
> Date: 04/03/2013 3:35 PM (GMT-08:00) 
> To: Warren Bailey <wbailey at satelliteintelligencegroup.com> 
> Cc: Valdis.Kletnieks at vt.edu,nanog at nanog.org 
> Subject: Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test 
> 
> 
> On 3 Apr 2013, at 23:20, Warren Bailey <wbailey at 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 at foobar.org> 
>> Date: 04/03/2013 3:04 PM (GMT-08:00) 
>> To: Valdis.Kletnieks at vt.edu 
>> Cc: nanog at nanog.org 
>> Subject: Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test 
>> 
>> 
>> On 3 Apr 2013, at 22:48, Valdis.Kletnieks at 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