[Digikam-devel] [digikam] [Bug 329353] New: make slow processing better

[julien.t43+kde at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=329353

            Bug ID: 329353
           Summary: make slow processing better
    Classification: Unclassified
           Product: digikam
           Version: 3.4.0
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: digikam-devel at kde.org
          Reporter: julien.t43+kde at gmail.com

On my netbook (or could be the same with large/big collections), on multiple
occasions, the processing could be very slow and the interfaces gives little
feedback to check if not crashed and make it more manageable, especially by
treating small files first and giving back interface/interactivity quickly. I
have time where initial scan takes hours and I can do nothing else...
Most of this stuff should either be default or advanced opion only/digikamrc
probably

- when scanning for thumbnails (initial scan, maintenance), option to skip or
delay at the end file bigger than X mb (default: 10MB?; if bigger, at first
start, check cpuinfo/meminfo and if small, offer to adjust or settings
checkbox)
- in preview/thumbs bar, if loading image take more than 3 sec,
infobubble/message "Loading <filename>"
- option to limit kio subprocess active at the same time: had time when
half-dozen kio_digikam* where fighting for my poor cpu... maybe a limit of one
or two per core, especially for Atom processor
- set process and subprocess to idle priority (cpu/nice and disk/ionice) when
minimized

Test up to 3.5 (lubuntu 13.10/kde 4.11.3 and before, macos 10.9).

Reproducible: Always

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