why loading bars jump around instead of smoothly increasing percent?

Question

3%. 5%. 34%! 97%! 97… 98…

In: Technology

Answer 1

Say you have 100 files you were transferring.
The first 3 files were small enough to transfer in under a second so you just see 3%
The 4th is and fifth files are also immediate. So you see the 5%.
The 6th file is 100MB and files 7-34 are 1KB each. So you see 34% because although there was a delay at the 6th file the rest were immediate.

Programmatically it may have been set to calculate to show the specific progress as a percent but the speed at which it computes may be too fast to show.