[Digikam-devel] [Bug 224094] New: Modifying file (caption, keywords, EXIF) takes a very long time and 100 % CPU

[Simon]

https://bugs.kde.org/show_bug.cgi?id=224094

           Summary: Modifying file (caption, keywords, EXIF) takes a very
                    long time and 100 % CPU
           Product: digikam
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel at kde.org
        ReportedBy: simon.eu at gmail.com


Version:           1.1.0 (rev.: 1079718) (using 4.3.4 (KDE 4.3.4), Debian
packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.32-4.slh.2-sidux-686

I've got this since (very) roughly a month. (Perhaps only half a month.)

Scenario: I've got ridiculous 40 images on my SD card with a total size of 60
MB. Resolution is 12 MP. Copying them via digikam Import dialog takes about ten
minutes. Doing the same with any file manager takes 2 seconds. (This is about
300 times faster.)

Timing for copying one single file with digikam:
0.1 s: copy process
9.9 s: EXIF rotating file DSC_whatever
ALL of these files did NOT need to be rotated. So 99% of this time digikam was
doing simply nothing but wasting CPU time and power. The CPU was at 100 %
during the EXIF rotating process.

Same when writing data to a pic (Caption, Tag, ...). Writing takes 10 seconds
too. 

I've got a 3.3 GHz Core2Duo.
Doing the same on my laptop with an old 2 GHz Core2Duo takes 0.1 seconds. At
most.

So what is going on there? I cannot possibly work with digikam this way.


I'm using digikam from SVN, this version checked out today. I did a 
$ cmake -DCMAKE_BUILD_TYPE=debugfull -DCMAKE_INSTALL_PREFIX=`kde4-config
--prefix` ../../graphics && make clean && make -j3 
and then 
# make install

Wrong packets installed? Or what is the reason for that?

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