Just a curiosity...

revnice · Joined: 30 Sep 2010 Posts: 16

The backup has been running for say, an hour. The status bar shows that a quarter of the backup is complete - suggesting that 3 hours remain.

However, the Estimated Time Remaining shows 14 hrs 26 minutes! - or something else that's totally bizarre.

I can tell from doing many backups, that the status bar estimate is quite reliable but the ETR is a complete retard! (This is true of the Win 7 operating system too).

That they are calculated differently must be the explanation but a Time Remaining that's so wildly inaccurate and constantly changes its mind, cannot possibly be useful to anyone.

Why don't we have the ETR consult the status bar to find a meaningful Time Remaining? Smile

rev

TGRMN Software · Site Admin Joined: 10 Jan 2005 Posts: 8679

Hi,

ViceVersa uses the speed of the copy during the last X minutes to estimate the time left. It assumes that the rest of the copy will happen at the same speed as the last X minutes. But that can be incorrect.

Another method could be to use the total time so far to estimate the rest, but that could be incorrect too. It is hard to estimate the time left based on what has happened so far.

For instance copying a large file is faster than copying many small files. So if you start copying small files and copy a very large file for last, the estimate time left could be very incorrect.

thanks
_________________
--
TGRMN Software Support
http://www.tgrmn.com
http://www.compareandmerge.com

revnice · Joined: 30 Sep 2010 Posts: 16

Yeah, I figured that was the case but why even bother with an estimate that's wildly inaccurate and constantly changing?

The status bar, or rather the calculation method used for the display of the status bar, seems to be pretty accurate.

I have a lot of digital audio stuff so it gets slow copying 40,000 piano samples but large and small files tend to average out the estimate by the end.

Good program! If I were to suggest changes, the interface is a little funky, not slick like the usual presentation of Windows programs. I'm not fooled by that, functionality is more important but VV has that.

Maybe it's time to update the interface and combine all those window that popup into a tabbed display?