Originally Posted by itimpi
As far as I kbnow there is no built in limit. The largest library I have heard of people already having is around 30K books which is quite a large library. I personally currently have about 9K books in a wide variety of formats (averaging around 4 formats per book) - total size is around 14GB.
Yep. Just imported 31222 books, total size 11GB. That took a day (literally; it took almost 24 hours), but version 0.6.49 now starts up in 1,5 minutes and searches take < 2 sec.
The older versions were completely unusable on this machine (1.5GB RAM, 1,66GHz Core2Duo T5500) with only ~20K books in them (last time I tried). Startup took more than 20 minutes and searches took minutes. This with a DB created with a humongous batchfile of 'calibredb add'-commands, as importing through the GUI...welll
Great job, Kovid!