[Bug 223638] New: Very unstable "speed meter" while copying large files

[Apopas]

https://bugs.kde.org/show_bug.cgi?id=223638

           Summary: Very unstable "speed meter" while copying large files
           Product: kde
           Version: unspecified
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: apopatos at gmail.com


Version:            (using KDE 4.3.4)
Compiler:          gcc-4.4.2 
OS:                Linux
Installed from:    Gentoo Packages

I have two hard disk drives. One is formatted with XFS and the other one with
EXT4.

Whenever I copy a large file (i.e 4GB) from Ext4 to XFS, the speed meter of KDE
acts like a cardiogram, with a speed from 80 MB/s to 25 and vice versa. Finally
the copy time is correct and about 58-60 seconds.
When I copy from XFS to EXT4 the meter is stable from 67-70 MB/s and the total
time is still about one minute.

I have not tried it with other filesystems, but it seems the "speed meter" is
very unstable while reading from EXT4. It doesn't seem to affect the copy
action though.

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