I have a question about how download DSL speed is measured.
Previously I had 1.5Mb DSL service. When I went to a site such as
SpeakEasy <http://www.speakeasy.net/speedtest/> to measure my d/l
speed, it would show approximately 1.1 - 1.3 Mb which is what I would
expect. However when I would use a .bat script in a WinXP console
window to measure the speed I would only calculate about half that
The .bat script works as follows:
1) turn on a timer
2) use ftp to download a 1.5MB file from the server of my ISP.
3) turn off timer & save elapsed time
4) calculate d/l speed from the known file size and d/l time
I've recently upgraded to 3Mb service and I have seen my d/l speeds
double. However I still see the same relative disparity between the
two methods of d/l speed measurement as described above; i.e. the
speed measured at SpeakEasy is about 2.9Mb/sec but the speed
calculated by the script is about 1/2 that.
Can anyone offer any insight as to why the large disparity?
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