unresponsive while scanning for new items
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unresponsive while scanning for new items
 
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Hi
I do not have enough detailed information to file a bug and something similar might already be reported. Still I wanted to inform you about it. Maybe it helps in some way. I just made changes to a big set of images (350G) outside of digikam (metadata writing with exiftool). So it took quite some time searching for new items after startup (notification on the bottom left), but never used cpu or ram very hard. After some time however digikam became unresponsive, just a grey frame. The commandline did show that it was still working in the background, the following was displayed repeatedly: digikam.dimg: "*somefile*" : JPEG file identified digikam.metaengine: Orientation => Exif.Image.Orientation => 1 So digikam was still functioning, just not the gui and still digikam did load the computer, but not overload. After a certain time digikam resurfaced and worked fine. Cheers, Simon _______________________________________________ Digikam-devel mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-devel |
Re: unresponsive while scanning for new items
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Which digiKam version do you use ? Gilles Caulier 2016-07-22 17:32 GMT+02:00 Simon Frei <[hidden email]>: Hi _______________________________________________ Digikam-devel mailing list [hidden email] https://mail.kde.org/mailman/listinfo/digikam-devel |
Re: unresponsive while scanning for new items
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Compiled from software-compilation. Git core is on commit c9f02e0.
On 22/07/16 19:14, Gilles Caulier
wrote:
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Re: unresponsive while scanning for new items
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From my experience sqlite use must be limited to 100Gb of images. For more, use Mysql. You can use internal server, no need a remote server. In this case, it will be used as sqlite. Gilles Caulier 2016-07-22 19:31 GMT+02:00 Simon Frei <[hidden email]>:
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Re: unresponsive while scanning for new items
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The time latency from gui are done certainly by sqlite lock because a lots lots data need to be managed in database.
Did you store the DB file in a fast device as a SSD. This improve also the performance until a limit of course. In all case, as you use git/master code, Mysql must give better results. We will interested to have a comparison. Gilles Caulier 2016-07-22 19:35 GMT+02:00 Gilles Caulier <[hidden email]>:
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Re: unresponsive while scanning for new items
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Thanks for the information.
We discussed the issue of database location earlier already. In the meantime I locate the database in ram, so access is fast (digikam as a whole is a lot faster now). My issue is not that digikam was slow, it is that it became completely. unresponsive for no apparent reason (no performance limit). For clarification (I have no knowledge of database programming): Internal mysql uses the same "system" as sqlite and the recent patches discussed were only concerning external mysql? Trying mysql is on my list, but only after I reorganised my collection. If sqlite really proves to be unusable with lots of data, I may switch earlier. On 22/07/16 19:38, Gilles Caulier
wrote:
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Re: unresponsive while scanning for new items
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2016-07-22 21:19 GMT+02:00 Simon Frei <[hidden email]>:
yes there are. sqlite still unchanged. Mysql database is more designed to work with huge data, not sqlite. This is why this kind of DB exists. Don't forget the low level interface from Qt which is different slightly different than sqlite. Gilles Caulier
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Re: unresponsive while scanning for new items
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I wanted to give you an additional piece of information: I just had
the same issue again and could test what file is accessed:
The unresponsivness (grey window) occurs while digikam is reading (sic!) from thumbnails-digikam.db. On 22/07/16 22:03, Gilles Caulier
wrote:
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Re: unresponsive while scanning for new items
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the thumb DB can growing up very quickly. Do you have enough free space on your device ? Gilles Caulier 2016-07-25 23:32 GMT+02:00 Simon Frei <[hidden email]>:
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Re: unresponsive while scanning for new items
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Yes that is not a problem. And the weird thing is it is not even
writing to it, but reading.
On 25/07/16 23:38, Gilles Caulier
wrote:
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Re: unresponsive while scanning for new items
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The thumb database file store wavelets compressed image (thumbnails) in a table. If file is corrupted for a specific reason, you can remove it, and it will be recreated automatically. There is no extra properties stored in this database. I just take time to recreate it. That all. Try to rename this file in the way tp force re-creation, and look the result. Gilles Caulier 2016-07-25 23:47 GMT+02:00 Simon Frei <[hidden email]>:
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