Math: calculating bytes per second

1

This is really bugging me. I should not be having a problem doing this sort of thing. Hopefuly someone here will know what I’m doing wrong.

totalK=getBytesTotal();
I’ve got a loop set up wherein I
A) set oldTime equal to time
B) set oldLoadedK equal to loadedK
C) set time equal to getTimer(). Divided by 1000 to get seconds
D) set loadedK equal to getBytesLoaded();
E) set remainingK equal to totalK minus loadedK

now… I should be able to figure out estimated time remaining.

I’m thinking it’s

estimatedTimeRemaining=(loadedK-oldLoadedK)/(time-oldTime)*remainingK;

but for some reason this doesn’t seem to work. Can anyone tell me if it’s my math, or should I be looking for syntax errors?

2

math looks fine to me.

if you use the whole of what’s loaded rather than just the last loops worth of information, you’ll get a more accurate estimate

sTime is the time when the download commenced.

estTime = (getTimer() - sTime) * (totalBytes/loadedBytes);

3

ok good… at least I’m not just dumb. :slight_smile:

I’ll check for syntax errors and then impliment the change you suggested.

thanks supra

4

oops, just noticed something.

that code i posted will return the estimated total time. to get the remaining time, you’d have to subtract the time which has passed.


elapsedTime = getTimer() - sTime;
remainingTime = elapsedTime * (totalBytes/loadedBytes) - elapsedTime;
5

ahh… the whole thing still isn’t working right.

Grrr…

of course I’m not doing it exactly like that so I’ve a feeling it’s something else…

I’ll let you know how I come along. Thanks for the reitteration.