https://bugs.kde.org/show_bug.cgi?id=497830
Bug ID: 497830
Summary: Poor performance regarding image manipulation in
general
Classification: Applications
Product: gwenview
Version: 24.12.0
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: gwenview-bugs-n...@kde.org
Reporter: dpe...@opensuse.org
Target Milestone: ---
Hello,
I am 15+ years with KDE and as (also) a Photographer I work a lot with images
in KDE ... But more or less basic stuff, to display images mostly and view them
in gwenview, thumbnails in Dolphin, showfoto/digikam .. I use other
applications to process images (Darktable, RawTherapee, Art, GIMP, etc ...) ..
I've additionally opened this bug in SUSE bugzilla
https://bugzilla.opensuse.org/show_bug.cgi?id=1230545 .. I've upgraded my KDE
platform to 6.8.1 Qt, gwenview 24.12, KDE frameworks 6.9.0
SUMMARY:
my problem is that KDE are horribly slow while processing an images .. In
general, 100% reproducible .. gwenview seems to me as the industry-slowest app
for instance .. I've run couple of tests on computer with 13th gen i7 cpu, m2
ssd (++ usb 3.2 usb drive) and 32GBs of memory (mostly idle) .. here are
results
STEPS TO REPRODUCE
1.
folder with mix of nikon D850 raw files + jpeg images - generating and
thumbnails in
dolphin - 2:10 seconds
gnome's nautilus - 38 seconds
RT when opening as a folder view - 32 seconds
2.
traversing through 50 loseless compressed raw files (it displays embedded jpg
anyway)
gwenview - 2:08 seconds
geeqie - 35 seconds
3. traversing to several hundreds of JPGs .. I've took as a start point
geeqie - 60 seconds
gwenview - incredible 2:28
gnome's default image viewer (eye of gnome ??) - 1:22
EXPECTED RESULT
image manipulation in KDE is exceptionally slow compared to other DEs .. It
should be about similar performance
SOFTWARE/OS VERSIONS
Qt: 6.8.1
Kde Frameworks: 6.9
+++
I was testing that additionally in stock KDE from openSUSE Leap 15.6
Qt: 5.15.12
Kde Frameworks: 5.115.0
^^ performance here was even worse ... I continued with updated KDE
ADDITIONAL INFORMATION
I am not attaching any logs or anything because problem seems to me 100%
reproducible .. It's a general problem with KDE working with images ...
thanks for support ..
cheers, ~dan
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