[155518] in North American Network Operators' Group
RE: Testing 1gbps bandwidth
daemon@ATHENA.MIT.EDU (J.J. Mc Kenna)
Tue Aug 14 12:11:08 2012
From: "J.J. Mc Kenna" <JMcKenna@intelletrace.com>
To: "Justin M. Streiner" <streiner@cluebyfour.org>, "nanog@nanog.org"
<nanog@nanog.org>
Date: Tue, 14 Aug 2012 16:09:11 +0000
In-Reply-To: <Pine.LNX.4.64.1208141119410.12324@whammy.cluebyfour.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Have you looked at M-lab? XO and Global Crossing(Lvl3) now use this a their=
primary. XO still has some servers on various nodes, but they only get tu=
rned up for testing on a case by case basis. AboveNet has a larger presence=
in Europe, but no testing servers I've found yet.
J.J. Mc Kenna
=A0=A0=A0
On Tue, 14 Aug 2012, Eric Wieling wrote:
> Is there a speedtest.net-like site you like?
The problems can be:
1. Finding one that gives consistent results, as others have already noted.
2. Finding one that is topologically close to you. Me testing from my offi=
ce in Pittsburgh, PA to a server in Washington, DC isn't necessarily an acc=
urate test if I have to jump through 4-5 different ASs to reach it.
3. Path asymmetry can skew your test results. The path between you and the=
test server is not necessarily (often isn't) the same as the path from the=
test server back to you, and problems on the return path might not be as r=
eadily visible to you, when you only have access to a full suite of diagnos=
tic tools at only one end.
Sometimes speed-test sites are fine for basic benchmarking, but I wouldn't =
treat the results as gospel of rely on them alone to prove/disprove whether=
a provider is delivering the bandwidth I contracted for.
jms
> -----Original Message-----
> From: Nick Hilliard [mailto:nick@foobar.org]
> Sent: Tuesday, August 14, 2012 11:09 AM
> To: nanog@nanog.org
> Subject: Re: Testing 1gbps bandwidth
>
> On 14/08/2012 15:43, valdis.kletnieks@vt.edu wrote:
>> case trying to use one of the speedtest.net servers - we had a clear=20
>> 10G path out through like 3 AS's in a row, the bottleneck was=20
>> speedtest.net's server. :)
>
> you'll have to forgive me for being the cynical type, but I gave up on Sp=
eedtest the day they reported 146Mbit/sec download over a link which was ha=
rd-wired to 100Mbit/sec full duplex, and later that day they reported 2Mbit=
from another nearby server to the same box. I figured a stddev of 2 order=
s of magnitude wasn't going to give me figures accurate enough for my requi=
rements.
>
> But hey, this is the Internet: ymmv, ianal, lolwut, bbq.
>
> Nick
>
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>
>
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