![]() |
#1 |
Junior Member
![]() Posts: 4
Karma: 10
Join Date: Dec 2010
Device: Kindle
|
Calibre Resource Hogging
Hi,
I'm using Calibre with Ubuntu 10.10. I have noticed that when Calibre is converting to mobi, it uses 100% of both cpu's in my laptop. It has the laptop fan working furiously. Is this normal? Last edited by Charlebhoy; 12-22-2010 at 02:34 AM. |
![]() |
![]() |
![]() |
#2 |
Wizard
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 3,130
Karma: 91256
Join Date: Feb 2008
Location: Germany
Device: Cybook Gen3
|
I think it is. You can customize how many cores (or, to be more specific, worker processes) Calibre uses in the preferences (see the miscellaneous part).
|
![]() |
![]() |
Advert | |
|
![]() |
#3 |
Fanatic
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 519
Karma: 2693434
Join Date: Dec 2009
Location: Australia
Device: Cybook Gen 3, Pocketbook 902, Sony 650
|
I have a similar problem, in that when I try to save a second or third lot of 100 books to disc (to external drive via USB) in succession, the process freezes, and the computer temperature runs up to more than 100.
I note your reply, but I don't understand what figure I should use when re-setting the specified preference. What does it all mean, comrade? |
![]() |
![]() |
![]() |
#4 |
Junior Member
![]() Posts: 4
Karma: 10
Join Date: Dec 2010
Device: Kindle
|
Thanks for the advice, but I also ask which value should I enter for this? It is currently set to 6.
TIA |
![]() |
![]() |
![]() |
#5 | |
Wizard
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 3,130
Karma: 91256
Join Date: Feb 2008
Location: Germany
Device: Cybook Gen3
|
Quote:
Depends on what you want. If you want only one core to work, I believe setting the number to 1 would do that. |
|
![]() |
![]() |
Advert | |
|
![]() |
#6 |
Junior Member
![]() Posts: 4
Karma: 10
Join Date: Dec 2010
Device: Kindle
|
Hi,
The lowest setting I can choose is 2, and doing this seems to have the program sharing the load between the 2 cores a bit more equal, wheras before both cpu`s were working at 100%. Thanks for the help! |
![]() |
![]() |
![]() |
#7 |
Wizard
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 3,130
Karma: 91256
Join Date: Feb 2008
Location: Germany
Device: Cybook Gen3
|
It should, for the record, be mentioned that high CPU utilization during conversions is not unusual in itself.
|
![]() |
![]() |
![]() |
#8 |
US Navy, Retired
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 9,893
Karma: 13806776
Join Date: Feb 2009
Location: North Carolina
Device: Icarus Illumina XL HD, Kindle PaperWhite SE 11th Gen
|
You might want to go to Preferences - Behavior - and change job priority from Normal to Low. This setting has helped me on my Core 2 Duo Windows XP machine.
|
![]() |
![]() |
![]() |
#9 |
Junior Member
![]() Posts: 4
Karma: 10
Join Date: Dec 2010
Device: Kindle
|
|
![]() |
![]() |
![]() |
#10 |
US Navy, Retired
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 9,893
Karma: 13806776
Join Date: Feb 2009
Location: North Carolina
Device: Icarus Illumina XL HD, Kindle PaperWhite SE 11th Gen
|
|
![]() |
![]() |
![]() |
#11 |
Wizard
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 3,130
Karma: 91256
Join Date: Feb 2008
Location: Germany
Device: Cybook Gen3
|
I'm seeing it as well, but on a windows machine... it may be that the Linux version uses some other terminology and/or mechanism to control priority. Try looking around a bit in the preferences or wait for one of the Linux users to show up here.
|
![]() |
![]() |
![]() |
#12 |
creator of calibre
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 45,231
Karma: 27110894
Join Date: Oct 2006
Location: Mumbai, India
Device: Various
|
job priority is a windows only feature.
|
![]() |
![]() |
![]() |
#13 |
Sigil & calibre developer
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 2,487
Karma: 1063785
Join Date: Jan 2009
Location: Florida, USA
Device: Nook STR
|
Job priority is not in the Linux version.
Conversion is a cpu intensive task. As such it will use as much as there is free to complete the task. Memory too. This is by design. |
![]() |
![]() |
![]() |
#14 |
Addict
![]() ![]() ![]() ![]() ![]() Posts: 219
Karma: 404
Join Date: Nov 2010
Device: Kindle 3G, Samsung SIII
|
You can use your OS to alter the priority of the processing that are running... (renice from command line or some GUI utility). Of course I am aware it would be much more convenient if Calibre spawned the processes with the priority you want directly - perhaps with some help of the Calibre developers it would not be that difficult to modify the code so that Calibre spawns processes with lower priority if that is important for you... or perhaps just as a quick hack you could write a tiny script that checks the processes say every 10 seconds and renices the Calibre ones...
EDIT: in any case, I would first try running a few long, CPU intensive conversions using renice (or something similar) and see whether it actually solves your problem - if so, then you should be able to apply some solution (either one of the above mentioned or something else) Last edited by janvanmaar; 12-22-2010 at 06:03 PM. |
![]() |
![]() |
![]() |
#15 |
Member
![]() Posts: 18
Karma: 10
Join Date: Jan 2011
Device: Sony PRS350
|
I have the same issue with high cpu... What I did was set the processer affinity to the 2nd cpu only in the 'task manager'. This reduces the load on the first cpu allowing me to continue working. As to temperature not sure if it will help much.
|
![]() |
![]() |
![]() |
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
just another resource | gheatza | Deals and Resources (No Self-Promotion or Affiliate Links) | 6 | 10-15-2010 04:31 AM |
New image resource - Must See! | Nate the great | Deals and Resources (No Self-Promotion or Affiliate Links) | 2 | 01-01-2010 12:09 PM |
REB1100 resource | 250 Coupe | Legacy E-Book Devices | 2 | 08-25-2009 09:03 PM |
MR Resource | Stitchawl | Lounge | 22 | 08-16-2009 10:24 AM |
share our resource . | babyskin | Workshop | 1 | 12-05-2007 02:23 AM |