https://bugs.kde.org/show_bug.cgi?id=478554

            Bug ID: 478554
           Summary: Very slow maintenance process with mariadb
    Classification: Applications
           Product: digikam
           Version: 8.3.0
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Database-Mysql
          Assignee: digikam-bugs-n...@kde.org
          Reporter: leoutat...@gmx.fr
  Target Milestone: ---

Maintenance process is very slow when using mariadb external server
Scanning or rescanning image files takes a long time. 
I checked mariadb db with mariadb-check tool, it's ok.
This issue doesn't happen with sqlite.
There was no problem with Digikam version < 8.1 (may be 7.10)
Conditions:
Arch Linux system
mariadb 11.2.2
digikam git version
exiv2 0.28.1
Qt5 KF5 and/or Qt6 KF6 
With valgrind:
valgrind --tool=callgrind --dump-instr=yes --simulate-cache=yes
--collect-jumps=yes digikam
With valgrind digikam launch is stalled at "initiating main view", CPU runs at
100%
See callgrind.out here :
https://www.dropbox.com/scl/fi/bdh11hg2t159sm04mhl95/callgrind.out.16513?rlkey=2ylgx8qbic1dxcey6pf3rujs7&dl=0

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