[Digikam-devel] [Bug 218633] "Write Metadata to Selected Images" Very Slow for Large Number of Images

[DGardner]

https://bugs.kde.org/show_bug.cgi?id=218633





--- Comment #2 from DGardner <dkde gardnersworld org>  2009-12-14 13:21:31 ---
It just occurred to me that while I did not time the 1,200+ file
metadata update yesterday, my filesystem did.

There were 1,283 files and the difference between the earliest and
the latest modification time stamp is 30 min 19 sec. So you can
add this to my list of timings:

  1,283 files -> 1,819 seconds

These were from an older 2MP camera with an average files size of
about 800kB.

Would it be possible to stop digiKam from reacting to notifications
from KDirWatch while it has a background operation in progress?
Perhaps digiKam could simply store up these notifications and then
apply the appropriate ones when it has finished the first job. It
does not sound easy to figure out what "appropriate" would be, though.

In the meantime, I'll disable the modification time stamp updates,
write the metadata to the files, run "touch" from the command line
and then turn on the modification time stamp updates again, as I
won't be doing any more large batches of images again for a while.

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