Calibre running slowly on Win10

Tanjamuse · 05-15-2019, 02:14 AM

Hi.

I recently bought a new laptop and went from Windows 7 to 10. Everything in the computer is exactly the same as the one that ran Windows 7, but Calibre runs much slower on the new laptop.

The computer has less ram and runs windows 7 and run Calibre much quicker. It takes the computer less than 7 hours to add 17.000 books, it takes the laptop more than 24 hours to add the same books.

I have no idea what's wrong but it's very frustrating.

It takes the laptop a half hour to add 1% and the computer adds the same 1% in a couple of minutes.

kovidgoyal · 05-15-2019, 04:29 AM

exclude the calibre library folder from your antivirus.

Tanjamuse · 05-15-2019, 04:38 AM

Thanks. It looks to run much better now. I thought that I had done that earlier. Is it automatically disabled in windows 7?

DaltonST · 05-15-2019, 08:32 AM

On your new PC, check Control Panel > System > Advanced > Performance > Virtual Memory > Paging File and make sure it is turned on and is set to be allowed to be very large since Calibre loads all of a Library's metadata into memory.

Also, Library > Library Maintenance > Check Library to defragment/compress your metadata.db file.

DaltonST

PeterT · 05-15-2019, 11:49 AM

Are you sure that the hard drives in the two systems are similar specs? I wouldn't be surprised if the laptop has a slower drive in it.

Tanjamuse · 05-15-2019, 11:51 AM

The two laptops are exactly the same specs, the only differences is that one runs win7 the other win10

DaltonST · 05-15-2019, 01:03 PM

Loading books defragments your hard-drive. Defragment it using either the Win 10 built-in optimizer or a 3d party defragmenter like Piriform's Defraggler. Run Win 10 Disk-Cleanup in system file mode too.

theducks · 05-15-2019, 01:25 PM

Quote:

Originally Posted by DaltonST

Loading books defragments your hard-drive. Defragment it using either the Win 10 built-in optimizer or a 3d party defragmenter like Piriform's Defraggler. Run Win 10 Disk-Cleanup in system file mode too.

W10 runs defrag automatically (I think weekly). Nothing stops you from a a Manual launch after you do significant file deletes, but you can't turn it OFF (you might remove the program, but that would be drastic).
The Defrag tool has an Analize function: I have never seen double digits like I used to with XP (only manual/scheduled), convincing me that it automatically does run.

HarryT · 05-16-2019, 01:35 AM

Fragmentation is only a practical issue when your drive becomes very full (say >90%). A drive with lots of free space really shouldn’t get fragmented.

05-15-2019, 02:14 AM	#1
Tanjamuse Wizard Posts: 1,327 Karma: 5306 Join Date: Jan 2014 Device: none	Calibre running slowly on Win10 Hi. I recently bought a new laptop and went from Windows 7 to 10. Everything in the computer is exactly the same as the one that ran Windows 7, but Calibre runs much slower on the new laptop. The computer has less ram and runs windows 7 and run Calibre much quicker. It takes the computer less than 7 hours to add 17.000 books, it takes the laptop more than 24 hours to add the same books. I have no idea what's wrong but it's very frustrating. It takes the laptop a half hour to add 1% and the computer adds the same 1% in a couple of minutes. Last edited by Tanjamuse; 05-15-2019 at 02:22 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Calibre - running more slowly	Joanna	Calibre	22	12-31-2015 05:02 AM
Calibre Running Really Slowly	polly	Devices	21	10-28-2013 08:18 PM
Calibre for Mac running slowly	scubasaida	Calibre	3	08-12-2011 06:37 PM
calibre running slowly OS X??	tm3	Calibre	3	01-14-2011 10:31 AM
BooksOnBoard is running really slowly	JSWolf	Reading Recommendations	3	02-22-2009 08:00 PM

05-15-2019, 04:29 AM	#2
kovidgoyal creator of calibre Posts: 45,261 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	exclude the calibre library folder from your antivirus.

05-15-2019, 04:38 AM	#3
Tanjamuse Wizard Posts: 1,327 Karma: 5306 Join Date: Jan 2014 Device: none	Thanks. It looks to run much better now. I thought that I had done that earlier. Is it automatically disabled in windows 7?

05-15-2019, 08:32 AM	#4
DaltonST Deviser Posts: 2,265 Karma: 2090983 Join Date: Aug 2013 Location: Texas Device: none	On your new PC, check Control Panel > System > Advanced > Performance > Virtual Memory > Paging File and make sure it is turned on and is set to be allowed to be very large since Calibre loads all of a Library's metadata into memory. Also, Library > Library Maintenance > Check Library to defragment/compress your metadata.db file. DaltonST

05-15-2019, 11:49 AM	#5
PeterT Grand Sorcerer Posts: 13,385 Karma: 78877538 Join Date: Nov 2007 Location: Toronto Device: Libra H2O, Libra Colour	Are you sure that the hard drives in the two systems are similar specs? I wouldn't be surprised if the laptop has a slower drive in it.

05-15-2019, 11:51 AM	#6
Tanjamuse Wizard Posts: 1,327 Karma: 5306 Join Date: Jan 2014 Device: none	The two laptops are exactly the same specs, the only differences is that one runs win7 the other win10

05-15-2019, 01:03 PM	#7
DaltonST Deviser Posts: 2,265 Karma: 2090983 Join Date: Aug 2013 Location: Texas Device: none	Loading books defragments your hard-drive. Defragment it using either the Win 10 built-in optimizer or a 3d party defragmenter like Piriform's Defraggler. Run Win 10 Disk-Cleanup in system file mode too.

05-16-2019, 01:35 AM	#9
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383099 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Fragmentation is only a practical issue when your drive becomes very full (say >90%). A drive with lots of free space really shouldn’t get fragmented.

Advert

Advert