Calibre 3.21

mitch13 · 04-18-2018, 04:25 AM

Cannot find version 3.21 discussed anywhere so have a query.

I run a very large Calibre database and it has been brilliant. Been with Calibre for many years and always been very impressed.

Only since I have upgraded to have my PC is grinding to a halt. I run Calibre Portable on a Western Digital plug in drive around 4Tb with 13.4Gb free at present. The last I checked the Calibre database was around 500Mb.
Has been running fine but now suddenly find that it becomes almost impossible to use. Machine has 16Gb memory, running Intel i5 at around 1.80 GHz.
Opinion needed - the problem comes down to disk access permanently high while Calibre running. all other parts ok

itimpi · 04-18-2018, 04:41 AM

Difficult to think what might be the issue. On my system there is no disk activity if Calibre is idle. Ideas that occur to me are:

Calibre is running a background task. This might happen if Calibre has to recreate the metadata.opf file (used to recover the Calibre metadata database if it gets corrupted) stored with each book. However this task normally runs at a low priority so that it does not impact performance.
Windows is swapping Calibre to/from disk. You do not mention what might be running in parallel with Calibre. It seems that you should have enough RAM to stop this happening, but looking in Windows Task Manager should help determine this.

ilovejedd · 04-18-2018, 04:48 AM

Anti-virus software perhaps?

BetterRed · 04-18-2018, 04:53 AM

I have some chunky libraries on 2TB WD Black Caviar mounted in an Astone usb 3.0 disk dock attached to a USB 3 port on a 16Gb i7-7700, and I have not observed any performance degradation with calibre 3.21 on those libraries or the libraries on my internal drives..

Sounds to me like you have hardware problems, could be the drive itself, could be the drive carrier SATA/USB interface, or the USB cable, or the USB port on your PC. If the drive carrier is USB 3 make sure its attached to a USB 3 port, they're normally blue, and make sure the cable is up to scratch.

Suggest you download the WD disk analysis & diagnostics kit and run it.

BR

kovidgoyal · 04-18-2018, 12:31 PM

There haven't been any changes in 3.21 itself that could affect database performance. Check your third party plugins, sometimes there could be an incompatibility causing issues, run calibre from a command prompt as

calibre.exe --ignore-plugins

mitch13 · 04-19-2018, 02:47 AM

Thanks everyone. Seems to have sorted itself out after trying a few of the suggestions made.

mitch13

04-18-2018, 04:25 AM	#1
mitch13 Addict Posts: 203 Karma: 10 Join Date: Jul 2008 Location: Queensland, Australia Device: Appraising the market	Calibre 3.21 Cannot find version 3.21 discussed anywhere so have a query. I run a very large Calibre database and it has been brilliant. Been with Calibre for many years and always been very impressed. Only since I have upgraded to have my PC is grinding to a halt. I run Calibre Portable on a Western Digital plug in drive around 4Tb with 13.4Gb free at present. The last I checked the Calibre database was around 500Mb. Has been running fine but now suddenly find that it becomes almost impossible to use. Machine has 16Gb memory, running Intel i5 at around 1.80 GHz. Opinion needed - the problem comes down to disk access permanently high while Calibre running. all other parts ok

04-18-2018, 04:41 AM	#2
itimpi Wizard Posts: 4,553 Karma: 950151 Join Date: Nov 2008 Device: Sony PRS-950, iphone/ipad (Marvin/iBooks/QuickReader)	Difficult to think what might be the issue. On my system there is no disk activity if Calibre is idle. Ideas that occur to me are: Calibre is running a background task. This might happen if Calibre has to recreate the metadata.opf file (used to recover the Calibre metadata database if it gets corrupted) stored with each book. However this task normally runs at a low priority so that it does not impact performance. Windows is swapping Calibre to/from disk. You do not mention what might be running in parallel with Calibre. It seems that you should have enough RAM to stop this happening, but looking in Windows Task Manager should help determine this.

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04-18-2018, 04:48 AM	#3
ilovejedd hopeless n00b Posts: 5,110 Karma: 19597086 Join Date: Jan 2009 Location: in the middle of nowhere Device: PW4, PW3, Libra H2O, iPad 10.5, iPad 11, iPad 12.9	Anti-virus software perhaps?

04-18-2018, 04:53 AM	#4
BetterRed null operator (he/him) Posts: 21,725 Karma: 29711016 Join Date: Mar 2012 Location: Sydney Australia Device: none	I have some chunky libraries on 2TB WD Black Caviar mounted in an Astone usb 3.0 disk dock attached to a USB 3 port on a 16Gb i7-7700, and I have not observed any performance degradation with calibre 3.21 on those libraries or the libraries on my internal drives.. Sounds to me like you have hardware problems, could be the drive itself, could be the drive carrier SATA/USB interface, or the USB cable, or the USB port on your PC. If the drive carrier is USB 3 make sure its attached to a USB 3 port, they're normally blue, and make sure the cable is up to scratch. Suggest you download the WD disk analysis & diagnostics kit and run it. BR

04-18-2018, 12:31 PM	#5
kovidgoyal creator of calibre Posts: 45,351 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	There haven't been any changes in 3.21 itself that could affect database performance. Check your third party plugins, sometimes there could be an incompatibility causing issues, run calibre from a command prompt as calibre.exe --ignore-plugins

04-19-2018, 02:47 AM	#6
mitch13 Addict Posts: 203 Karma: 10 Join Date: Jul 2008 Location: Queensland, Australia Device: Appraising the market	Thanks everyone. Seems to have sorted itself out after trying a few of the suggestions made. mitch13

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