MobileRead Forums - View Single Post - Calibre is incredibly slow editing metadata

Adoby · 08-30-2012, 05:22 PM

I did some testing on my computer.

Ubuntu 12.04, AMD FX-8120, 16 GB, 2TB SATA II 5400rpm WD20EARS. Ext4, ~60% used. /tmp in tempfs (RAM). Also SATA II SSD, but that was not used in this test.

I made 10 copies, with different titles, of a 380MB PDF.

Bulkchange author in Calibre:
First run, empty caches: 125 seconds.
Second run: 75 seconds.

Copy the books using Nautilus (default file manager in Ubuntu):
First run, empty caches: 120 seconds.
Second run: 35 seconds!

So caches and available memory seems to have a big impact.

08-30-2012, 05:22 PM	#10
Adoby Handy Elephant Posts: 1,737 Karma: 26785684 Join Date: Dec 2009 Location: Southern Sweden, far out in the quiet woods Device: Samsung Galaxy Tab S8 Ultra	I did some testing on my computer. Ubuntu 12.04, AMD FX-8120, 16 GB, 2TB SATA II 5400rpm WD20EARS. Ext4, ~60% used. /tmp in tempfs (RAM). Also SATA II SSD, but that was not used in this test. I made 10 copies, with different titles, of a 380MB PDF. Bulkchange author in Calibre: First run, empty caches: 125 seconds. Second run: 75 seconds. Copy the books using Nautilus (default file manager in Ubuntu): First run, empty caches: 120 seconds. Second run: 35 seconds! So caches and available memory seems to have a big impact.