Option for showing current speed in backup progress bar

[jullanggit]

Proposal

Having a config/cli option for seeing the current (instead of the average) speed in the backup progress bar

Reason

I would personally really enjoy seeing the speed spike up (and dip down) in real time. Keeping the time estimate an average is probably a good idea, but I feel like an option to set the speed to real-time wouldn't cause any harm and would be really cool!

Thanks for considering this option :)

[aawsome]

Hi @jullanggit, thanks for opening this issue.
Note that rustic currently already shows the current speed - which is averaged/smoothed a bit.

The point is that a concept of "actual speed" is a very complicated. We just can say that at some given points in time, we made a progress of a given amount of bytes. Calculating a speed always includes doing some averaging...

[jullanggit]

Thanks for the quick answer! Would it maybe be possible to have an option to change how much smoothing is applied? The reason I even noticed this is that the counter still shows multi-MB/s speeds, even tough the total count (in MB) hasn't changed for a few seconds. Again, nothing too big, just something that would maybe be fun to play around with!

[jullanggit]

I have looked a bit into the source code for the progress bar and came to the conclusion, that it would probably be needlessly complicated to show the "current speed" / average less, so I will be closing this issue.
Nonetheless, thanks for looking into this!