Lightroom: Export jpg with only 4 core

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  • Updated 2 years ago
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It that normal to export jpg with only 4 core?

I have new Intel Broadwell-E, Core i7 6950X with 10/20 Cores/Threads and camera raw and lightroom use only 4 Cores.

I using tens of thousands of photos for export from raw to jpg.

We are in 2016
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Marian Ilie

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  • disappointed

Posted 2 years ago

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Michael Madsen

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Yes - perfectly normal. You get practically zero utilization of more than 4 cores in Lightroom (or for the most part PS for that matter) - it has been like this for a long time a is not likely to change any time soon - as it will prob require some serious revision of a lot of code and algorithms. Consider Capture One Pro instead - it's much more powerfull featurewise than LR and is almost 100% OpenCL optimized meaning there's no upper limit performance wise if you just chuck in some beefy amd cards. You can even use multiple GPUs for truely awesome performance. 

when using LR or PS you get the best performance with a Core i5 / 6600k or Core i7 / 6700K overclocked since singlethread performance is the most important thing.
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Stefan Redel

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Worst thing: 1:1-Preview seems to use only 1 Core. I have a 6900K, 8 Cores/16 Threads. It's a pity nowadays in 2016.
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John R. Ellis, Champion

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Adobe has struggled with the balance between utilizing multiple processors and providing a responsive, interactive user interface.  The first releases of LR 6 were more aggressive at utilizing processors but there were complaints about the responsiveness of the user interface during exports.  So Adobe backed off on utilization.  

Lots of apps manage to solve this problem, but I don't have any insight into why Adobe hasn't been able to.

Meanwhile, as an inconvenient workaround, you can fire off multiple concurrent exports to fully utilize your machine.
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Stefan Redel

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Jepp, first LR6-releases were much butter utilizing power while exporting.
It should be easy for Adobe to implement a switch (or a slider) where you can adjust what your System utilizes on power.
More power for developing? OK, slider to the left.
I don't want to develope right now but the quickest possible export with all 8 cores? Slider to the right.
Both should be balanced: Slider to the middle.

But this will never happen.
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Stefan Redel

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A reply from Adobe here would be a nice move...