[dolphin] [Bug 508077] New: Copy/move status dialog: Base time remaining on rolling average

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https://bugs.kde.org/show_bug.cgi?id=508077

            Bug ID: 508077
           Summary: Copy/move status dialog: Base time remaining on
                    rolling average
    Classification: Applications
           Product: dolphin
      Version First 25.04.3
       Reported In:
          Platform: openSUSE
                OS: Linux
            Status: REPORTED
          Severity: wishlist
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: tx872yz339+kdebugs at posteo.eu
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 183922
  --> https://bugs.kde.org/attachment.cgi?id=183922&action=edit
Example of spiky transfer rates that lead to poor estimations

SUMMARY

The calculation for the displayed time remaining on the file transfer dialog
for file copy/move operations seems to be based off of the current transfer
speed and remaining data to be transferred only.
This leads to highly variable estimations that render the information mostly
useless a lot of the time (rapidly changing between 3-4 minutes and 20+
minutes, for example) .

This is especially evident when transferring multiple files from a
slower/inconsistent/high-latency source (see attached screenshot for an
example).

Instead, the estimation should be based on a rolling average, perhaps something
like the last 10 seconds, to absorb spikes and variability and provide more
reliable and useful feedback to the user.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1

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