Edu versus Speakeasy Speedtest

Scott Berkman scott at
Thu Apr 29 11:12:13 CDT 2010

2 things.

1:   (See the section on
inaccurate results over 20Mbps and that the test is meant for "residential
broadband services")

2:  Speakeasy is a commerical ISP for both residential and business users.
That means it is in their best interest to encourage you to purchase their
services.  I have no issues with Speakeasy and have used them personally
with great success in the past (great support but prices are a little high
for most residential users), but why would you test one provider's service
with a sales tool from another (competing) provider and expect accuracy?


-----Original Message-----
From: Bret Clark [mailto:bclark at] 
Sent: Thursday, April 29, 2010 12:05 PM
To: nanog at
Subject: Re: Edu versus Speakeasy Speedtest

All the new OS's (IE Windows7) automatically adjust TCP window size.

Personally I've never found those website speed test to be that accurate 
on fast connections (over 15Mbps full duplex).  The only way to really 
confirm bandwidth is by running IPERF.

Robert Glover wrote:
> Adjust your TCP window size.
> -----Original Message-----
> From: "Murphy, William" <William.Murphy at>
> Date: Thu, 29 Apr 2010 10:53:01 
> To: nanog at<nanog at>
> Subject: Edu versus Speakeasy Speedtest
> I work for an Edu with multi-gigabit Internet connectivity and I get
> questions from users saying "Why am I only getting 14Mb when I run this
> speed test?"  I have got to believe that the various Internet speed tests
> (Speakeasy or dslreports) are rate limited to prevent someone from
> them down.  I am able to get 300-400Mb running from a PC inside my network
> to NDT servers located on Internet2, so that tells me my border and
> network is healthy.  Can someone on this list shed some light regarding
> reliability and accuracy of these various speed tests especially for an
> with lots'o bandwidth?  Thanks.
> Bill Murphy
> University of Texas Health Science Center - Houston

More information about the NANOG mailing list