How to calculate Throughput?

[sak]

Ok i know this is a stupid question. But I am sure i can figure this out if i look at it LONG enough. But as of yet i cant seem to figure it out.

I am trying to figure out how do the Internet speed Bandwidth testers get their figures? for example i used www.toast.com/performance and i got the results back as follows:

Loaded 754,928 bytes in 2.022 seconds from 4web-space server. and it calculated my throughtput as 2987 Kb. How did it get those figures?

when i am trying to calculate it I am getting bigger numbers. I think i might be missing some division or something.

And also if say i have a 3megaBITS/Sec connection what is the biggest possible X_KiloBYTES/Sec? as in when i am downloading something from the internet. the download rate is never more than 350Kb/s and i am always wondering how is that calculated.


TIA

 

[Venix]

754,928 / 2.022 = 373357.0722 bytes per second
373357.0722 / 1000 = 373.3571 kilobytes per second
373.3571 * 8 = 2987 kilobits per second

Apparantly they're using 1000 instead of 1024 bytes as a KB. Oh well.

 

[Apologiliac]

WAY too technical

 

[sak]

Hey i figured that out right after i posted the dang msg. i know it was a stupid. I think i had a brain freez for an hour. i was trying to figure it out and I just couldnt. Thanks

 

[futuristicmonkey]

Originally posted by: sak
And also if say i have a 3megaBITS/Sec connection what is the biggest possible X_KiloBYTES/Sec? as in when i am downloading something from the internet. the download rate is never more than 350Kb/s and i am always wondering how is that calculated.


TIA

Your download rate is never more than 350kb/s because the servers you are downloading from don't/won't allocate too much bandwidth to you.

 

[daveshel]

that works better with http://www.toast.net/performance/ although the first was interesting