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Old 04-02-2011, 04:03 PM   #1
leecole
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Epub to Mobi loop???

I have "The Purpose Driven Life: What on Earth Am I Here For?" by Rick Warren in the Epub format. I attempt to convert it to Mobi, so I can read it on my Kindle, but the conversion never ends. It gets to 47% and never progresses ant further. Any suggestions?
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Old 04-02-2011, 04:27 PM   #2
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Do you get any error messages? If not, let it continue. If there is no error message, Calibre is still working on the conversion- problematic files have been known to take a few hours sometimes.
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Old 04-02-2011, 08:41 PM   #3
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Quote:
Originally Posted by leecole View Post
I attempt to convert it to Mobi, so I can read it on my Kindle, but the conversion never ends. It gets to 47% and never progresses ant further. Any suggestions?
Never is a absolute that doesn't apply in this case.

Hopefully you took Manichean's advice and let it continue the conversion. If you don't get a error returned then it is still processing the conversion. It is not in a loop. You can open the job details for the book (lower right) and view the log as it goes.
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Old 04-08-2011, 08:52 AM   #4
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Epub to Mobi loop?

Quote:
Originally Posted by dwanthny View Post
Never is a absolute that doesn't apply in this case.

Hopefully you took Manichean's advice and let it continue the conversion. If you don't get a error returned then it is still processing the conversion. It is not in a loop. You can open the job details for the book (lower right) and view the log as it goes.
It reaches 47% after about 30 min. Six hrs later, it is still at 47%. Since the conversion process brings my system to it's knees (100% cpu) I haven't been willing to let it run any longer. I was hoping someone would have some clue as to maybe change a option that may help.
Thanks...
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Old 04-08-2011, 09:26 AM   #5
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Depending on the quality of the input file, conversions can take a really long time. The longest conversion I've had running was about 24 hours. Your call.
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Old 04-08-2011, 09:07 PM   #6
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Quote:
Originally Posted by leecole View Post
Since the conversion process brings my system to it's knees (100% cpu) I haven't been willing to let it run any longer. I was hoping someone would have some clue as to maybe change a option that may help.
Go to preferences - behavior and change Job priority from Normal to Low and your computer should remain responsive during the conversion.
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Old 04-15-2011, 08:56 AM   #7
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Walt's suggestion: Go to preferences - behavior and change Job priority from Normal to Low and your computer should remain responsive during the conversion

I had already done this, but that doesm't ensure system reposiveness, Windows XP's task manager itself doesn't get control until a task does I/O or executes a WAIT instruction. Believe me, on my system, conversion still brings my system to it's knees, even with calibre-parrall running at low priority. Yhw real solution, of course, would be to purchase a newer system, but I am retired trying to make it on a fixed income, so the option that I will go with, is read this book on Calibre instead of my Kindle.
Thanks for the suggestions.
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Old 04-15-2011, 09:24 AM   #8
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Quote:
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I had already done this, but that doesm't ensure system reposiveness,
True enough, setting low priority works great when you have more than one core. I guess running the jobs while you sleep is the other alternative.
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Old 04-15-2011, 12:46 PM   #9
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If you are doing nothing else,
Low priority should make little difference in the processing times.
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Old 04-22-2011, 09:14 AM   #10
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TheDubks - If you are doing nothing else,
Low priority should make little difference in the processing times
In Windows XP, unless you are using a program that gains control by a hardware interrupt, it (whatever it's priority) will NOT wrest control away from a running task until that task does I/O (the I/O routine does a wait) or your program itself issues a wait. I have several programs attempting to run (all at a higher priority than caibre-parrell) but until calibre-parell does I/O none of them will gain control. If a program is examining data and/or moving data around in memory, it will keep control.

It is a fact that calibre brings my system to a virtual halt when it converts a book. I have In Preferences-Behavior-Job Priority = Low. I am just asking if there is something other than that that might make a difference.
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Old 04-22-2011, 09:38 AM   #11
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Quote:
Originally Posted by leecole View Post
It is a fact that calibre brings my system to a virtual halt when it converts a book. I have In Preferences-Behavior-Job Priority = Low. I am just asking if there is something other than that that might make a difference.
If you have a single core system, as I guessed in post 8, then there is nothing you can do except run it while you sleep.
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Old 04-22-2011, 09:57 AM   #12
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I have a single-core system, and as long as I run the calibre-parallel at Low priority my system hardly notices that a conversion is running. I am running windows 7 Pro as the OS rather than XP, so I guess that might make a difference.

I guess another variable might be RAM - if that got low it could push the system into excessive paging. I have 2GB on the system in question, so that is far more than Calibre ever wants to use.
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Old 04-22-2011, 10:04 AM   #13
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I have a single-core system, and as long as I run the calibre-parallel at Low priority my system hardly notices that a conversion is running. I am running windows 7 Pro as the OS rather than XP, so I guess that might make a difference.
That was my experience after switching to low priority too. I have a dual core, Windows XP with 3.5GB and needed to change to low priority for my system to remain responsive. Windows 7 might be the key to your success.

Quote:
Originally Posted by itimpi View Post
I guess another variable might be RAM - if that got low it could push the system into excessive paging. I have 2GB on the system in question, so that is far more than Calibre ever wants to use.
This too is a possibility.

Good info.
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Old 04-22-2011, 11:35 AM   #14
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My system is similar to Walt's. Just not as much RAM (1.5G).

Taming your A/V (no real time: calibre files and Library. Scan BEFORE adding.) makes a huge difference.
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Old 04-22-2011, 11:48 AM   #15
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Taming your A/V (no real time: calibre files and Library. Scan BEFORE adding.) makes a huge difference.
Good point - I have both my Calibre install folder, and my Calibre library folders set to be exempt from virus scanning.
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