[162144] in North American Network Operators' Group
Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test
daemon@ATHENA.MIT.EDU (Nick Hilliard)
Wed Apr 3 19:13:06 2013
X-Envelope-To: nanog@nanog.org
In-Reply-To: <hjnah8b3g5m3186qk8ckp4s5.1365028863298@email.android.com>
From: Nick Hilliard <nick@foobar.org>
Date: Thu, 4 Apr 2013 00:12:49 +0100
To: Warren Bailey <wbailey@satelliteintelligencegroup.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 3 Apr 2013, at 23:41, Warren Bailey <wbailey@satelliteintelligencegroup.c=
om> wrote:
> They may do some magic with bandwidth delay products.. If that was the cas=
e, they may have written it for a standard latency versus something that is u=
nreasonable by interweb standards.=20
I don't know how they calculate bandwidth, but I was surprised that their sy=
stem gave such wrong results under what were effectively lab conditions.=20
Nick
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> Sent from my T-Mobile 4G LTE Device
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> -------- Original message --------
> From: Nick Hilliard <nick@foobar.org>=20
> Date: 04/03/2013 3:35 PM (GMT-08:00)=20
> To: Warren Bailey <wbailey@satelliteintelligencegroup.com>=20
> Cc: Valdis.Kletnieks@vt.edu,nanog@nanog.org=20
> Subject: Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test=20=
>=20
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> On 3 Apr 2013, at 23:20, Warren Bailey <wbailey@satelliteintelligencegroup=
.com> wrote:
>> Try it with upwards of 900ms of variable latency.=20
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> The last crazy result I got was 146mbit/s on a hardwired 100 mbit link an=
d 1-2ms latency to the speedtest.net server I was using at the time (same da=
ta centre). Testing this sort of thing with high latency and jitter is unde=
rstandably hard, but I didn't see a good reason at the time why it should ha=
ve been so badly out with good underlying network characteristics.
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> Nick
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>>=20
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>> Sent from my T-Mobile 4G LTE Device
>>=20
>>=20
>>=20
>> -------- Original message --------
>> From: Nick Hilliard <nick@foobar.org>=20
>> Date: 04/03/2013 3:04 PM (GMT-08:00)=20
>> To: Valdis.Kletnieks@vt.edu=20
>> Cc: nanog@nanog.org=20
>> Subject: Re: Speedtest Results speedtest.net vs Mikrotik bandwidth test=20=
>>=20
>>=20
>> 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 techni=
cally
>> > capable of, feel free to correct me...)
>>=20
>> I've seen speedtest.net give results significantly greater than the physi=
cal bw of the client's network link.
>>=20
>> Nick
