Calibre had become very slow

jukin · 07-28-2015, 06:21 PM

I did a search here and find people having a problem with Calibre freezing on them. I do not have this problem. My problem is that Calibre has become very unresponsive...very slow. It loads fine and sits there running but when I switch to it and click add books, often the screen goes white for about 30 seconds and then Calibre displays again. Adding a book results in the add book UI hanging for anything up to 40 seconds before the progress bar starts moving. When the progress bar completes, the download UI remains on top for about another 20 seconds before finishing.

Like I say, Calibre loads fine but it seems that if it's not accessed much during a session then it becomes very slow.

Polishing or converting work fine so I'm thinking it's some kind of issues between Calibre and its library.

I'm on Windows 8.1 64Bit, running Calibre vers 3.33 but as I have had this problem for a few weeks I'm going to try going back to v3.28 before rooting around in the system.

BTW I have 124GB free on my hard disk so it's not a space issue.

JSWolf · 07-28-2015, 07:23 PM

I'm running Calibre 3.33 64-bit on Windows 7 Home, Windows 8. Home, and Windows 8.1 Pro. I've not seen any of the problems you've mentioned. I think it's something with your system rather than Calibre.

cvkemp · 07-28-2015, 08:38 PM

I am not seeing this issue on windows 10 64 bit, but I did on 8 and 8.1 64 bit.

theducks · 07-28-2015, 08:45 PM

It is fine on W7 Pro (x64)
Calibre 2.0 has always been slow on XP.

Wait; Everything modern is slow on XP. It is the 2001 era programs that still run fast.

eschwartz · 07-28-2015, 09:14 PM

calibre 2.x doesn't even run on XP without non-trivial hacking...

I don't see this problem on linux either.
(I found calibre to be generally slow on Windows, but I blame that on a combination of anti-Windows sentiment and using underpowered systems.

)

Maybe the OP's computer is performing overaggressive swapping?

theducks · 07-28-2015, 09:53 PM

Quote:

Originally Posted by eschwartz

calibre 2.x doesn't even run on XP without non-trivial hacking...

I don't see this problem on linux either.
(I found calibre to be generally slow on Windows, but I blame that on a combination of anti-Windows sentiment and using underpowered systems.

)

Maybe the OP's computer is performing overaggressive swapping?

I have the original 2.0 that still allowed XP installs. No hack was needed.
I have one of the 'Lucky' systems where it does run.

BetterRed · 07-28-2015, 10:01 PM

Quote:

Originally Posted by jukin

...

Did you try excluding the library from your AV ?

Quote:

Originally Posted by jukin

Like I say, Calibre loads fine but it seems that if it's not accessed much during a session then it becomes very slow.

That's sounds a bit suss to me - what happens if you start calibre and add a book immediately ?

Quote:

Originally Posted by jukin

Polishing or converting work fine so I'm thinking it's some kind of issues between Calibre and its library.

What happens if you do a Save to Disk on the same drive - if that's also slow then...

What about other disk operations, try copying some chunky files with File Explorer

BR

eschwartz · 07-28-2015, 10:05 PM

Quote:

Originally Posted by theducks

I have the original 2.0 that still allowed XP installs. No hack was needed.
I have one of the 'Lucky' systems where it does run.

Ah, I forgot about the original v2.0

jukin · 07-29-2015, 03:42 PM

Quote:

Originally Posted by BetterRed

What happens if you do a Save to Disk on the same drive - if that's also slow then...

What about other disk operations, try copying some chunky files with File Explorer

BR

I actually copied the library to a new location but it made no difference. No other application has this problem and I am able to copy files between folders (which I do frequently) with no performance issues. It's only Calibre that has this issue. I have run Calibre for around 2 years now and it is only in the last 2-3 weeks that I have seen this problem. The only change has been automated Windows updates. I uninstalled 2.33 last night and installed Windows 64bit v2.33 but the problem is still there. Before doing an upgrade to Windows 10 I am going to try moving the library to another disk.

Thanks for your help and advice guys, much appreciated.

BetterRed · 07-29-2015, 05:40 PM

@jukin -

moving the library to another drive is a good idea.

If that doesn't fix it, try excluding the library from your AV. Many (most) AV's do high frequency silent updates which introduce new 'problems', to justify their existence I guess.

What about calibre's Save to Disk, is it slow?

Another 'trick' would be to install an older version (e.g. 3.28) of 32 bit calibre, it can coexist with the existing 2.33 64 bit install, and it will use the same settings and libraries. That should show whether or not it is a recently introduced problem with calibre -which I very much doubt by the way.

BR

eschwartz · 07-29-2015, 11:16 PM

Where did all these v3.33 an v3.28's come from???

I agree -- nothing interesting has changed recently which should cause something like this to happen, I doubt it is an issue with caibre itself, alone.

BetterRed · 07-30-2015, 01:41 AM

Quote:

Originally Posted by eschwartz

Where did all these v3.33 an v3.28's come from???

BR

07-28-2015, 06:21 PM	#1
jukin Connoisseur Posts: 81 Karma: 12 Join Date: Nov 2010 Location: New Philadelphia, PA Device: iPad Air 2, Kindle Fire HD 10	Calibre had become very slow I did a search here and find people having a problem with Calibre freezing on them. I do not have this problem. My problem is that Calibre has become very unresponsive...very slow. It loads fine and sits there running but when I switch to it and click add books, often the screen goes white for about 30 seconds and then Calibre displays again. Adding a book results in the add book UI hanging for anything up to 40 seconds before the progress bar starts moving. When the progress bar completes, the download UI remains on top for about another 20 seconds before finishing. Like I say, Calibre loads fine but it seems that if it's not accessed much during a session then it becomes very slow. Polishing or converting work fine so I'm thinking it's some kind of issues between Calibre and its library. I'm on Windows 8.1 64Bit, running Calibre vers 3.33 but as I have had this problem for a few weeks I'm going to try going back to v3.28 before rooting around in the system. BTW I have 124GB free on my hard disk so it's not a space issue. Last edited by jukin; 07-28-2015 at 06:24 PM.

07-29-2015, 05:40 PM	#10
BetterRed null operator (he/him) Posts: 21,717 Karma: 29711016 Join Date: Mar 2012 Location: Sydney Australia Device: none	@jukin - moving the library to another drive is a good idea. If that doesn't fix it, try excluding the library from your AV. Many (most) AV's do high frequency silent updates which introduce new 'problems', to justify their existence I guess. What about calibre's Save to Disk, is it slow? Another 'trick' would be to install an older version (e.g. 3.28) of 32 bit calibre, it can coexist with the existing 2.33 64 bit install, and it will use the same settings and libraries. That should show whether or not it is a recently introduced problem with calibre -which I very much doubt by the way. BR Last edited by BetterRed; 07-29-2015 at 05:48 PM.

07-29-2015, 11:16 PM	#11
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	Where did all these v3.33 an v3.28's come from??? I agree -- nothing interesting has changed recently which should cause something like this to happen, I doubt it is an issue with caibre itself, alone. Last edited by eschwartz; 07-29-2015 at 11:19 PM.

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07-28-2015, 07:23 PM	#2
JSWolf Resident Curmudgeon Posts: 79,740 Karma: 145864619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	I'm running Calibre 3.33 64-bit on Windows 7 Home, Windows 8. Home, and Windows 8.1 Pro. I've not seen any of the problems you've mentioned. I think it's something with your system rather than Calibre.

07-28-2015, 08:38 PM	#3
cvkemp Loving life Posts: 1,430 Karma: 7991496 Join Date: Mar 2009 Location: Hot Springs Village, Arkansas Device: PaperWhite 6 SE, Fire HD8	I am not seeing this issue on windows 10 64 bit, but I did on 8 and 8.1 64 bit.

07-28-2015, 08:45 PM	#4
theducks Well trained by Cats Posts: 31,047 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	It is fine on W7 Pro (x64) Calibre 2.0 has always been slow on XP. Wait; Everything modern is slow on XP. It is the 2001 era programs that still run fast.

07-28-2015, 09:14 PM	#5
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	calibre 2.x doesn't even run on XP without non-trivial hacking... I don't see this problem on linux either. (I found calibre to be generally slow on Windows, but I blame that on a combination of anti-Windows sentiment and using underpowered systems. ) Maybe the OP's computer is performing overaggressive swapping?

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