Quote:
Originally Posted by JSWolf
100 books in 20 minutes means you have a rather slow computer. Either that or your computer has something running that slows it down.
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+1 - Any anti-Malware software that actively scans files is a prime suspect.
When calibre imports a new book by a new author, it creates two folders and 3 new files (copy of the book, an extracted or generated cover image, and a small database file). It also adds a new entry into is primary database file.
With a reasonably decent computer the disk processes should be reasonably quick, but not instantaneous. The computer's disk performance is usually the primary limiting factor. 100 books in 20 minutes is 5 books per minute, or 12 seconds per book, and is in line with what my Windows 10 tablet achieves with large ePubs when the library is stored on the microSD expansion card. My desktop machine (i7 processor and 7200rpm SATA HD) is considerably faster.
Calibre's file system and database design is not optimal for fast import, but is excellent in terms of robustness and speed of the library manager. Searches are fast as they use the database info and pre-generated cover image rather than reading filenames and extracting covers every time you search or scroll the display. The extra small db file saved with the book provides a backup of data to help with repairing a damaged library should disk problems occur.