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Old 08-04-2019, 10:51 PM   #31
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Not sure but on my setup, it was using all eight cores when I changed the graph from overall usage to logical processors.
Hmm, odd. I can see all of the cores when I do a 3d render and have it use the cpu instead of the gpu but with this book conversion it was obviously only using 1. I could see the OS randomly switching it to other cores while it was running.
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Old 08-05-2019, 09:38 PM   #32
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I tried it for a little while on my system until I forgot and let it go to sleep, throwing off the timing. The ram usage was always low. For cpu usage it was only 1 thread which was maxed. Made me wonder if Calibre could use multiple threads and do the html files in parallel, sort of like it does when you convert several books at once.
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Not sure but on my setup, it was using all eight cores when I changed the graph from overall usage to logical processors.
Do you guys suspect that Calibre may not be prepared for this sort of stuff?
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Old 08-05-2019, 09:48 PM   #33
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Do you guys suspect that Calibre may not be prepared for this sort of stuff?
Calibre can use multiple processes and there is an option to limit them to the number of processors. There are differences between how the underlying OS even between versions of the OS (Windows, Linux and Mac OSX) handle processes.

Note that this is multiprocessing which is a different critter from multi-threading. There are some great pages discussing these two and Python but they are mostly of interest to programmers.
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Old 08-05-2019, 10:16 PM   #34
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Calibre can use multiple processes and there is an option to limit them to the number of processors. There are differences between how the underlying OS even between versions of the OS (Windows, Linux and Mac OSX) handle processes.

Note that this is multiprocessing which is a different critter from multi-threading. There are some great pages discussing these two and Python but they are mostly of interest to programmers.
Well I'm not a computer science major so I dunno about this stuff really.
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Old 08-06-2019, 12:26 AM   #35
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Well I'm not a computer science major so I dunno about this stuff really.
The comment from my co-workers is that I know enough to be really dangerous.
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