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" <[email protected]>
Date: Thu, 29 Apr 2010 10:53:01
To: [email protected]<[email protected]>
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 shutting
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 internal
network is healthy. Can someone on this list shed some light regarding
reliability and accuracy of these various speed tests especially for an Edu
with lots'o bandwidth? Thanks.
Bill Murphy
University of Texas Health Science Center - Houston
