[Digikam-devel] [Bug 247141] unreasonable long working time when writing "Metadata in Files"

[Axel Krebs]

https://bugs.kde.org/show_bug.cgi?id=247141





--- Comment #4 from Axel Krebs <axel krebs t-online de>  2010-08-19 15:48:41 ---
Hello Andreas:

this is the component information:

digiKam version 1.2.0
Exiv2 kann in JP2 speichern: Ja
Exiv2 kann in JPEG speichern: Ja
Exiv2 kann in PGF speichern: Keine
Exiv2 kann in PNG speichern: Ja
Exiv2 kann in TIFF speichern: Ja
Exiv2 unterstützt XMP-Metadaten: Ja
LibCImg: 130
LibExiv2: 0.19
LibJPEG: 62
LibJasper: 1.900.1
LibKDE: 4.4.2 (KDE 4.4.2)
LibKExiv2: 1.0.0
LibKdcraw: 1.0.0
LibLCMS: 118
LibPGF: 6.09.44
LibPNG: 1.2.42
LibQt: 4.6.2
LibRaw: 0.8.5
LibTIFF: LIBTIFF, Version 3.9.2 Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.
Marble-Funktion: 0.9.2
Parallelisiertes Entfernen von Mosaikmustern: Ja
LibGphoto2: 2.4.8
LibKipi: 1.0.0

Following this information, I have LibExiv2 0,19
---

QUESTION:
Why do I need to write _all_ meta-data at one time?

When building thumbs, I can choose a _fast_ option "suchen" _or_ a slow
option "alle neu erzeugen". This distinction could be the solution I am
thinking of!!

I believe, it is partly a matter of indexing _strategy_, _not_ only a
potential bug in a library, DIGIKAM-authers can't change themselves. Can
you agree?

Why don't offer a fast "meta-data-indexing" just for those pics, one
just puts in ones collection? I mean, just monitoring the _differences_,
not the total of _all_ pics!!

This could even happen automatically in the background, I guess. In this
case, the indexing speed is surely of secondary interest, because not
bottlenecking work anymore.
---

Sorry for the answer delay!

I hope these considerations may help-



Axel
---


Am 17.08.2010 13:27, schrieb Andreas Huggel:
> https://bugs.kde.org/show_bug.cgi?id=247141
> 
> 
> 
> 
> 
> --- Comment #3 from Andreas Huggel <ahuggel gmx net>  2010-08-17 13:27:17 ---
> Which version of Exiv2 are you using?
> There was a severe performance issue when writing to images with certain Nikon
> Makernotes in version 0.19 (http://dev.exiv2.org/issues/show/677). It is fixed
> in 0.20. I'm not aware of any other performance problems.
> 
> Andreas
>

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