Quote:
Originally Posted by kovidgoyal
No, there are no plans, and I highly doubt your speed issues are anything to do with the database. Search a little on this forum and you will find plenty of tips on how to improve your performance in calibre. The most common being:
1) exclude your calibre library folder from antivirus
2) hide the tag browser
3) Dont use custom columns that are built from other columns using templates
4) Restrict what columns unprefixed searches search via preferences->Searching
Just anecdotally, on my machine adding a book to a library containing 50,000 books completes in under five seconds, and adding a book involves searching through all existing books for duplicates.
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I don't know what to say... I've been using SQLite for some projects in the past and I know it wasn't designed to handle operations as efficient as a full-blown database like Postgres, for example. Not sure if that changed lately, but anyway...
- I've excluded the e-book folder from the antivirus; I'm not sure that was a problem, since my on-access scanner only scans executable files.
- My default view doesn't show any tags at all.
- Not using any custom columns at all.
My gut feeling is that the slowness simply comes from the large amount of books, authors and tags
. At this moment my collection has 14689 books, 6426 authors and 5315 tags. I'm trying to clean the tags up and I delete them in batches of 100-200 using the Manage Tags feature; each time the whole GUI freezes up for 1-2 minutes (not complaining about the fact that the operation seems to take place on the GUI thread, since Calibre shows up as (not responding), but about the fact that it takes long to make changes on the database). As for imports, I import folders at once and it seems to take long for PDF files. I'll try to do some profiling, maybe I can figure out what's going on.
As a side note, any idea why Calibre is doing
these operations while importing books?