Conversion Performance issues.

dlyearsley · 10-09-2020, 11:22 AM

Looking for anyone running Windows 10 and Calibre 5. I am having performance issues with the Convert books button. When I am converting just one book I have noticed that it is very slow. Especially with the Metadata button. Looking to see if anyone else is having this issue. It has only happened in 5.0.

If I select 2 or more books to convert, then everything works fine.

theducks · 10-09-2020, 12:14 PM

5.0 is obsoleted (issues)
5.2 is current

Sorry, but I am long past the need to bulk convert (my Library gets only a few new additions per month these days), so Single convert is all I use and I have not noticed unusual slowness.

StegBook · 10-09-2020, 12:51 PM

I'm also having the same issue with slow conversions since upgrading to 5, 5.1 and 5.2.

JSWolf · 10-09-2020, 05:30 PM

With Calibre 5.2, I just converted 9 ePub to KF8 in about 1 minute 5 seconds. It's not slow at all.

It's most likely the source you are converting from.

BetterRed · 10-09-2020, 06:30 PM

dlyearsley & StegBook - post the conversion log -- click the job spinner, press Show job details button, etc….

BR

JSWolf · 10-09-2020, 07:00 PM

Quote:

Originally Posted by BetterRed

dlyearsley & StegBook - post the conversion log -- click the job spinner, press Show job details button, etc….

BR

But post it in a spoiler tag or a code block.

kovidgoyal · 10-09-2020, 10:11 PM

This isnt about errors/slowness in actual conversion, just opening the conversion dialog. See https://bugs.launchpad.net/calibre/+bug/1898221

StegBook · 10-10-2020, 09:01 AM

It does seem to be an issue with opening the conversion dialog with a single book selected. Once it opens and you click on another tab like "Look & Feel" it pauses for a while as well. You can click on any of the other tabs in the dialog box normally, but if you click on Metadata it pauses again and when you click another tab it pauses as before.

There is no busy icon when it happens either, unless you try and click something else.

It works normally with multiple books selected.

I'm using Windows 10.

10-09-2020, 11:22 AM	#1
dlyearsley Junior Member Posts: 6 Karma: 10 Join Date: Apr 2020 Device: Samsung Note 10	Conversion Performance issues. Looking for anyone running Windows 10 and Calibre 5. I am having performance issues with the Convert books button. When I am converting just one book I have noticed that it is very slow. Especially with the Metadata button. Looking to see if anyone else is having this issue. It has only happened in 5.0. If I select 2 or more books to convert, then everything works fine.

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10-09-2020, 12:14 PM	#2
theducks Well trained by Cats Posts: 29,800 Karma: 54830978 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	5.0 is obsoleted (issues) 5.2 is current Sorry, but I am long past the need to bulk convert (my Library gets only a few new additions per month these days), so Single convert is all I use and I have not noticed unusual slowness.

10-09-2020, 12:51 PM	#3
StegBook Member Posts: 12 Karma: 10 Join Date: Aug 2014 Device: Kindle Paperwhite 5	I'm also having the same issue with slow conversions since upgrading to 5, 5.1 and 5.2.

10-09-2020, 05:30 PM	#4
JSWolf Resident Curmudgeon Posts: 73,966 Karma: 128903250 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	With Calibre 5.2, I just converted 9 ePub to KF8 in about 1 minute 5 seconds. It's not slow at all. It's most likely the source you are converting from.

10-09-2020, 06:30 PM	#5
BetterRed null operator (he/him) Posts: 20,567 Karma: 26954694 Join Date: Mar 2012 Location: Sydney Australia Device: none	dlyearsley & StegBook - post the conversion log -- click the job spinner, press Show job details button, etc…. BR

10-09-2020, 10:11 PM	#7
kovidgoyal creator of calibre Posts: 43,856 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	This isnt about errors/slowness in actual conversion, just opening the conversion dialog. See https://bugs.launchpad.net/calibre/+bug/1898221

10-10-2020, 09:01 AM	#8
StegBook Member Posts: 12 Karma: 10 Join Date: Aug 2014 Device: Kindle Paperwhite 5	It does seem to be an issue with opening the conversion dialog with a single book selected. Once it opens and you click on another tab like "Look & Feel" it pauses for a while as well. You can click on any of the other tabs in the dialog box normally, but if you click on Metadata it pauses again and when you click another tab it pauses as before. There is no busy icon when it happens either, unless you try and click something else. It works normally with multiple books selected. I'm using Windows 10.

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