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Speed Test Drama

Posted: Wed Apr 02, 2008 4:39 pm
by Kamalmawa
OK.. I' ve seeing lot of ppl complaining about their speed after running speed test using Broadband speed test web sites specially ozspeedtest using Exetel mirror. So I decided to do a little 15min research on my line on this here is the result:

Tested with,

Operational Mode ADSL2+
Upstream 812 kbps
Downstream 22818 kbps
Noise Margin (Upstream) 15.8 db
Noise Margin (Downstream) 9.0 db
Attenuation (Upstream) 2.9 db
Attenuation (Downstream) 0.0 db

All these results was taken between 3.15PM and 3.30PM in Melbourne Time


Internet Explorer 7
Test run on 02/04/2008 @ 02:16 PM
Mirror: Exetel
Data: 9 MB
Test Time: 10.53 secs
Your line speed is 7.18 Mbps (7178 kbps).
Your download speed is 897 KB/s (0.88 MB/s).

Mozilla FireFox
Test run on 02/04/2008 @ 02:17 PM
Mirror: Exetel
Data: 9 MB
Test Time: 7.96 secs
Your line speed is 9.5 Mbps (9501 kbps).
Your download speed is 1.16 MB/s (1188 KB/s).


Internet Explorer 7

Mozilla FireFox


Internet Explorer 7

Mozilla FireFox

4. Downloading a file through Download Managing software

This is the speed test which I prefer. Downloading a file using software like FDM(Free download Manger) from a high speed server (eg: Microsoft download site)
I get maximum of 1.75Mb transfer rate sometimes but this is the average..

So according to this I think we can't always get 100% accurate results from these websites. Specially I have noticed sometimes ozspeedtest gives me 5178 kbps line speed. Also noticed Firfox browser shows some better results.

Tested PC:
AMD Athlon 64 X2 Dual Core 6000+
4GB 800Mhz RAM
Windows Vista 64-bit

Hope this helps you to test your speed issues.. Don't forget to leave any comments.. :wink:

Posted: Wed Apr 02, 2008 8:27 pm
by CoreyPlover
Thank you for the effort you have gone to here, it is well appreciated. I have noticed similar things where ozspeedtest is highly volatile (as is for intermittent periods) and my Opera browser gives consistently and reproducibly lower speeds for some web based tests when compared to Firefox and IE browsers.

I think one of the best ways of measuring speeds is via a download manager which downloads a single file using multiple streams (like FDM) or even better, downloading mutliple files from independent servers simultaneously.

A separate issue with speeds currently is, of course, slow speeds after midnight. Kamalmawa, perhaps you can perform similar comparisons during off-peak times. I am particularly interested in how disparate (if at all) the results are between a single web speed test is compared to a download which is requesting multiple sections of a file simultaneously (or even better, multiple files simultaneously).

Posted: Thu Apr 03, 2008 7:31 am
by James D
You can always try

This is a speed test set up on the exetel server.

Posted: Thu Apr 03, 2008 9:13 am
by CoreyPlover
James D wrote:You can always try
That is one that I had the greatest disparity between browsers: When performing 10 back-to-back alternating tests, Opera consistently gave 1.5Mbps, IE & Firefox consistently gave 8Mbps:

Posted: Thu Apr 03, 2008 2:25 pm
by Dazzled
Interesting. Ten minutes ago I compared browser speeds on Linux. My copper line is not exactly exciting, but Opera got 3.43 Mb/s; Firefox straight afterwards managed 4.47.

wget, on the other hand, reported an average of 557 KB/s.

How does Exetel (or other site) compute these speeds? Does the divisor (time) include a "dead" period at either end of the actual data transfer while the server and download client sort themselves out?