[Digikam-devel] [Bug 296768] when creating thumbnails, digiKam uses 80% CPU - quadcore 3800, 9GB RAM

[Axel Krebs]

https://bugs.kde.org/show_bug.cgi?id=296768

--- Comment #4 from Axel Krebs <axel.krebs at t-online.de> ---
Under Kubuntu 11.10, I use system Monitor, showing only "CPU". It
appears to be an average value of the overall load.

If possible, I´d linke to provide more detailed information- just don´t
know, how.

Axel

Am 26.03.2012 21:39, schrieb Marcel Wiesweg:
> https://bugs.kde.org/show_bug.cgi?id=296768
> 
> --- Comment #3 from Marcel Wiesweg <marcel.wiesweg at gmx.de> ---
> I would see it as a bug if digikam only uses 20% for a CPU-intensive task -
> that means it does not use the available hardware.
> Now thumbnail regeneration is older code, multithreaded but not prepared for
> multicore. In fact, there is only one thread. (code can be optimized by
> removing the need to generate a pixmap - this is only a toy for the progress
> dialog - and using the prepare... method).
> 
> So while I would like to see the thumbnail creation make use of all you four
> core, it cannot at the moment, and a load of 80% means load on all four cores.
> Which tool did you use to measure per-process or per-thread CPU use?
>

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