Paul Grinberg wrote:
Hi,
I'd like to suggest a tool that I am usually using to check bandwidth
speed.
It is called "iperf". It does not rely on usual HTTP download (most
online checkers use it), but rather on pure TCP session bandwith.
Your ISP maybe permits high HTTP downloads, but then throttles SSH or
ESP based traffic.
I think if you really want to measure, then you'll have to go with
iperf.
Best,
Paul
Interesting! Thanks for the tip!
-----Original Message-----
From: fedora-list-bounces@xxxxxxxxxx
[mailto:fedora-list-bounces@xxxxxxxxxx] On Behalf Of Chris Tyler
Sent: Friday, August 14, 2009 12:42 PM
To: Community assistance, encouragement, and advice for using Fedora.
Subject: Re: Testing upload/download bandwidth speeds for verification
On Fri, 2009-08-14 at 08:29 -0700, Daniel B. Thurman wrote:
I have been testing my residential ISP/DSL-Landline
connections and wanted to make sure that I was getting
what I am paying for. Supposedly, one can use the various
website based "speed test" tools to determine their upload
and download speeds.
Are these "speed test" tools credible and can they
be trusted?
Of the several sites I have tried, they all more or less
seemed to be in close agreement with one another in
terms of the bandwidth speeds, i.e. my connection
speed is quoted at 768KB/s up and 3MB/s down,
and the farther away from central, the more reduced
is the speeds are.
The average speed tools says that I have measured
speeds of 720-30 KB/s up and 2.0-5MB/s down.
Why is it however, that when downloading software
from the various Linux/M$ and other downloads sites
I am seeing on average, speeds of 200-320(max) KB/s
and never see anything much faster than that?
Yes. 3 megaBITs per second is just over 300 kiloBYTEs per second. There
are 8 bits per byte, plus there's packet and protocol overhead, so a
10:1 ratio between the numbers is normal.
So, does that mean I am wasting money by going from
768KB/s Up / 768KB/s Down to 768KB/s Up / 3MB/s
Down since I will never obtain download speeds faster
than the Upload limit of 768KB/s ???
No, if you downgraded to 768 kilobit/sec service you would expect a
maximum download speed of around 75-80 kilobytes per second.
-Chris
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