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mst · 12-10-2020, 12:56 PM

In my case, transferring files from Calibre to a device does take much longer than just copying the files from the HD to the device, even without sending and updating metadata. Sending 2k epubs from Calibre to the Kobo Clara HD takes about 10 hours. Copying them over with Fastcopy takes 15 minutes.

This is not a question of the speed of sending 2,000 1MB files vs. one file of 2GB. Something going on in the background between Calibre and the device is probably slowing down the transfer considerably. It also seems like sending smaller batches of hundreds of books takes less time than sending one large batch of thousands.

Has anybody additional ideas how to optimize this transfer process from Calibre to the device without using third-party tools like Fastcopy?

12-10-2020, 12:56 PM	#19
mst Connoisseur Posts: 73 Karma: 10 Join Date: Dec 2010 Device: Kobo Clara HD	In my case, transferring files from Calibre to a device does take much longer than just copying the files from the HD to the device, even without sending and updating metadata. Sending 2k epubs from Calibre to the Kobo Clara HD takes about 10 hours. Copying them over with Fastcopy takes 15 minutes. This is not a question of the speed of sending 2,000 1MB files vs. one file of 2GB. Something going on in the background between Calibre and the device is probably slowing down the transfer considerably. It also seems like sending smaller batches of hundreds of books takes less time than sending one large batch of thousands. Has anybody additional ideas how to optimize this transfer process from Calibre to the device without using third-party tools like Fastcopy? Last edited by mst; 12-10-2020 at 01:05 PM.