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Old 01-08-2020, 06:18 PM   #1
democrite
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Speed up adding books

Hello,

It would be nice of adding books could be faster. Small works on a decently quick SSD might take 3 or 4 seconds though larger books that I often add such as a test of a 400 meg EPUB takes 35 seconds. It seems that calibre is unzipping the whole file when I think all that's needed is the container.xml, OPF, and the cover. At least in cases when a large book takes a long time to add, the abort button doesn't respond until processing is completed, and in one test, the book is still added. As I often add large works, it would be nice if it were quicker.

A few bugs with 4.x. The adding books dialog on macOS has a minimum width of around 1050 points. Maybe that is 2x retina or something. And dragging out a multiple selection to copy books out of calibre no longer works.
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Old 01-08-2020, 06:27 PM   #2
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On adding, Calibre is reading the metadata, extracting the cover, checking for possible duplicates, saving the cover, the eBook, and metadata.opf as a backup, and updating the database. So a lot is going on. And if you have any plugins that do something when you add a book, take that into consideration as well.

Last edited by JSWolf; 01-08-2020 at 07:44 PM.
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Old 01-08-2020, 07:04 PM   #3
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I have few plugins installed. Some to cleanup selected works, few that I can think of that would be used on import except for Apprentice Alf's. It just seems that unzipping only the needed files, parsing of metadata and updating of SQLite, copying the file, and running of plugins such as for DRM could be much quicker. If for example one adds several 100+ meg files, such can take several minutes. It seems more optimization could be done.
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Old 01-08-2020, 08:34 PM   #4
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calibre does not unzip entire epub files to read metadata, unless you have some third party plugins installed, then all bets are off.
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Old 01-08-2020, 08:56 PM   #5
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Originally Posted by JaneSanchez View Post
I have the same problem:D:D:D
What OS and File System, and what sort of disk drive.

BR
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Old 01-08-2020, 09:17 PM   #6
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The DRM app itself takes maybe 1 or 2 seconds so I'd guess the plugin should be nearly as quick. I can't think of any other plugins that would do anything on import. Even adding a 400 meg EPUB without DRM takes 30+ seconds to import. I'm not sure what it is.
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Old 01-08-2020, 09:26 PM   #7
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Disable your third party plugins then check the time.
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Old 01-08-2020, 09:37 PM   #8
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Try adding a 400 MB video, then all calibre has to do is copy the file to the library folder. The times your're quoting are almost 10 times what I get on my Windows 10/NTFS/6Gbs SATA III system.
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Old 01-08-2020, 11:06 PM   #9
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It was a plugin.

Last edited by democrite; 01-08-2020 at 11:50 PM.
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Old 01-09-2020, 12:37 AM   #10
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It was a plugin.
Which one?
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Old 01-09-2020, 12:52 AM   #11
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Apprentice Alf.
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