From: "Antti Kurenniemi" 

"Geo"  wrote in message
news:44c74639$1{at}w3.nls.net...
>> The function executes a callback whenever a piece of the file is copied.
> It
>> is the responsibility of the UI to calculate and display the estimated
> time
>> remaining, and that has for some reason never been too easy.
>
> So every program, even though they use the same function, could do
> it a different way?

Yeppers. I've done it a zillion times in my programming stuff. I think I'm
almost getting it right nowadays... ;-)


> It's not easy because the transfer rate varies over time.

Yeppers to that, too.


> But some programs and some functions of the OS seem to have
> much more of a problem with estimating time remaining than
> others. I guess with your explanation this finally makes some sense.

It's exactly like you said in your other message, there are basically two
ways to do it of which one assumes an almost constant transfer rate, and
it's the one that goes bonkers if you do anything at all at the same time
(because it measures transfer only from the previous measurement point in
time).


Antti Kurenniemi

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