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
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-------- 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
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-------- 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