Aura H2O open book very slow

Smartie · 09-05-2016, 07:01 PM

Hi

I have a H2o. I have 200 books there and some of side loaded. I have updated to the latest firmware.

I found when I open the book, it is very slow. usually it would take 10 seconds to open the book. but page turn is pretty fast. Forget what it should be,but could anyone tell me whether open a book in 10 seconds in H2o is normal or not? Just restarted it and it is same. Didn't do factory reset yet.

Thanks in advance

bartveld · 09-06-2016, 03:36 AM

I'd say 10 seconds to open isn't too bad. I get something like that. Depends on the size and format of the book.

HarryT · 09-06-2016, 03:57 AM

Do you know why it takes so long? Books open instantly on a Kindle.

meeera · 09-06-2016, 04:29 AM

What sort of book? Format, number of pages, are the chapters separate files or one giant one?

I just opened two books on my H2O from the home screen. The one I'm currently reading opened in about two seconds; one I've never opened before took three or four.

Smartie · 09-06-2016, 11:07 AM

Quote:

Originally Posted by meeera

What sort of book? Format, number of pages, are the chapters separate files or one giant one?

I just opened two books on my H2O from the home screen. The one I'm currently reading opened in about two seconds; one I've never opened before took three or four.

That is what it used to be. I guess just a bad side loaded book

DNSB · 09-06-2016, 03:44 PM

Quote:

Originally Posted by Smartie

Hi

I have a H2o. I have 200 books there and some of side loaded. I have updated to the latest firmware.

I found when I open the book, it is very slow. usually it would take 10 seconds to open the book. but page turn is pretty fast. Forget what it should be,but could anyone tell me whether open a book in 10 seconds in H2o is normal or not? Just restarted it and it is same. Didn't do factory reset yet.

Thanks in advance

I'd suggest trying to open several books. I've found some that take much longer to load. Such things as a single massive file for the entire book rather than separate chapter files have caused slow opening. If all your books are slow to open, you may have a problem. If only one or two books, they have a problem.

Ripplinger · 09-06-2016, 03:52 PM

Quote:

Originally Posted by DNSB

I'd suggest trying to open several books. I've found some that take much longer to load. Such things as a single massive file for the entire book rather than separate chapter files have caused slow opening. If all your books are slow to open, you may have a problem. If only one or two books, they have a problem.

This is my guess as well, I've seen this on public domain books but also on purchased books, where the 500 page book is all within one .html file. Those always take a long time to load, a few wouldn't load at all until I broke them up into more reasonable size pages.

Oversized (usually needlessly) or a large amount of images within the book might cause it as well.

See if it happens on all books or just a few problem books. You can edit them either in Calibre or Sigil (I prefer Sigil but probably only because I'm more familiar with it) to break up those huge files and reduce the size of the images if that is indeed the problem.

PeterT · 09-06-2016, 06:53 PM

If davidfor see's this I wonder if it might be database related? Doesn't nickle add some data to the database on opening a book (the activity table I think)?

davidfor · 09-06-2016, 11:00 PM

Quote:

Originally Posted by PeterT

If davidfor see's this I wonder if it might be database related? Doesn't nickle add some data to the database on opening a book (the activity table I think)?

Yes, each time you open a book, there are several database updates. They mark the book as opened, add an entry to the event table to indicate the book has been opened, or update the counter if the book is being reopened. The number of rows in the event table grows more books are added and read. The rows don't get removed if the books is removed as this is used for some of the stats (such as books finished, hours read). But, I don't have any feel that this is causing a significant problem. To test that, you would need to remove all the current event rows and see if there was a difference. I haven't had a desire to do that.

PeterT · 09-06-2016, 11:06 PM

Do any of these tables get emptied on a succesful sync with the Kobo cloud?

davidfor · 09-07-2016, 12:42 AM

Not that I've noticed. In fact, some of the stats are downloaded after a factory reset.

It's been in the back of my mind to write a cleanup routine to remove older or less useful stats. I'll have to dig out my list of the events and see what can be done. Does anyone care to know how many times they used the dictionary in a book?

Ripplinger · 09-07-2016, 12:46 AM

Quote:

Originally Posted by davidfor

Does anyone care to know how many times they used the dictionary in a book?

Absolutely not.

JSWolf · 09-07-2016, 10:45 AM

I have no need to see how many times I've used the dictionary.

dmacmart · 09-07-2016, 10:51 AM

Quote:

Originally Posted by davidfor

Does anyone care to know how many times they used the dictionary in a book?

I would love to see the specific words that I looked up in a book - the count is much less useful.

JSWolf · 09-07-2016, 05:34 PM

What other stats are there that we may or may not care about?

09-05-2016, 07:01 PM	#1
Smartie Addict Posts: 285 Karma: 1150760 Join Date: Apr 2011 Device: Kindle PW,KOBO H2O	open book very slow Hi I have a H2o. I have 200 books there and some of side loaded. I have updated to the latest firmware. I found when I open the book, it is very slow. usually it would take 10 seconds to open the book. but page turn is pretty fast. Forget what it should be,but could anyone tell me whether open a book in 10 seconds in H2o is normal or not? Just restarted it and it is same. Didn't do factory reset yet. Thanks in advance

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09-06-2016, 03:36 AM	#2
bartveld Evangelist Posts: 413 Karma: 1477913 Join Date: Jan 2006 Location: Netherlands Device: KA1, Galaxy S8, Galaxy Tab A 10.1, ReMarkable	I'd say 10 seconds to open isn't too bad. I get something like that. Depends on the size and format of the book.

09-06-2016, 03:57 AM	#3
HarryT eBook Enthusiast Posts: 85,560 Karma: 93980341 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Do you know why it takes so long? Books open instantly on a Kindle.

09-06-2016, 04:29 AM	#4
meeera Grand Sorcerer Posts: 5,862 Karma: 68407974 Join Date: Dec 2011 Location: Australia Device: Kobo Libra 2, iPadMini4, iPad4, MBP; support other Kobo/Kindles	What sort of book? Format, number of pages, are the chapters separate files or one giant one? I just opened two books on my H2O from the home screen. The one I'm currently reading opened in about two seconds; one I've never opened before took three or four.

09-06-2016, 06:53 PM	#8
PeterT Grand Sorcerer Posts: 13,698 Karma: 79983758 Join Date: Nov 2007 Location: Toronto Device: Libra H2O, Libra Colour	If davidfor see's this I wonder if it might be database related? Doesn't nickle add some data to the database on opening a book (the activity table I think)?

09-06-2016, 11:06 PM	#10
PeterT Grand Sorcerer Posts: 13,698 Karma: 79983758 Join Date: Nov 2007 Location: Toronto Device: Libra H2O, Libra Colour	Do any of these tables get emptied on a succesful sync with the Kobo cloud?

09-07-2016, 12:42 AM	#11
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	Not that I've noticed. In fact, some of the stats are downloaded after a factory reset. It's been in the back of my mind to write a cleanup routine to remove older or less useful stats. I'll have to dig out my list of the events and see what can be done. Does anyone care to know how many times they used the dictionary in a book?

09-07-2016, 10:45 AM	#13
JSWolf Resident Curmudgeon Posts: 80,784 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	I have no need to see how many times I've used the dictionary.

09-07-2016, 05:34 PM	#15
JSWolf Resident Curmudgeon Posts: 80,784 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	What other stats are there that we may or may not care about?