Thread: How to speed up Calibre start?
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Old 01-20-2012, 09:18 AM   #41
chaley
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Quote:
Originally Posted by transmitthis View Post
Just one that shows format, epub, lit, pdf etc

Looking at it just now, it does seem to be build from other columns - at least thats what it says - so I guess that is a composite one.
This is one of the situations that can slow down calibre the most. Why? First, "Show in tags browser" is checked for that column, forcing the template to be evaluated for all books in the library at startup. Second, it uses "Formats", which causes calibre to verify the existence of every "format" (ebook file) during evaluation of the template. The two combine to check every ebook file during calibre startup, which can be thousands of files.

Uncheck "show in tags browser". The standard formats category gives you the same functionality, so you won't lose anything. Once unchecked, I suspect that your two minutes will drop to some number of seconds.
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