https://bugs.kde.org/show_bug.cgi?id=431951
Bug ID: 431951
Summary: UI lockup for upwards of 15 seconds while just
scrolling album views and selecting images
Product: digikam
Version: 7.2.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: digikam-bugs-n...@kde.org
Reporter: griffiths_a...@icloud.com
Target Milestone: ---
SUMMARY
Whenever I am doing any work on my database, occasionally the UI locks up for
upwards of 15 seconds for no apparent reason. During the lockup I can't scroll
anything in the album view (also applies in other views eg tags).
I have run digikam with the message debugging on, and the only thing I can
correlate this with messages from digikam.general
digikam.general: Action Thread run 1 new jobs # UI locks up now
digikam.general: One job is done
digikam.general: Cancel Main Thread # UI recovers
There's no indication of what that job is doing, but for it's duration I am
locked out. I'm not doing anything special or out of the ordinary when this
happens. I could be scrolling up and down in the album, or selecting images.
Is there any extra debug output I can enable? All other logging eg. thumbnails,
detection, or SQL statments appear as normal.
I'm running a self compiled digikam build 7.2 from Arch AUR. The revision is
https://invent.kde.org/graphics/digikam/commit/fd85e5002c0a0dc24a4583c67c3f157b55d35d29
I'm using the beta because I was keen to see if this issue had been resolved
with newer revisions, but I find it's the same issue as I've had since 7.0.
This issue seems to have plagued me for quite some time in 7.0 onwards. I have
a large database of images (300,000+) on MySQL backend, db is on SSD. Most of
the images live on USB3 attached disk, but this problem affects images also in
the internal SSD.
STEPS TO REPRODUCE
1. QT_LOGGING_RULES="digikam.*=true" digikam
2. Use digikam while observing the console
3. Note that lockup occurs on 'digikam.general: Action Thread run 1 new jobs'
4. Note that lockup frees on 'digikam.general: Cancel Main Thread'
OBSERVED RESULT
UI locks up occasionally for a long time
EXPECTED RESULT
UI should not lockup
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: ArchLinux
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
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