Lightroom: Use idle CPU in grid mode and multi-threaded utilization (performance)

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  • Updated 7 years ago
  • (Edited)

This conversation has been merged. Please reference the main conversation: Lightroom: Make use of extra cores to process multiple photos in parallel

My typical workflow after importing is to keyword the imported photos. Even with previews pre-rendered, scrolling down in grid view is a bit painful. As I'm working away on my current screen full of thumbnails, LR could be doing whatever it needs to do to make it faster to render the thumbnails further down.

Another way to describe it would be to take better advantage of idle CPU and memory.
Better multi-threadedness would be appreciated too on imports and exports.
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Damon Brodie

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Posted 9 years ago

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Lee Jay

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LR is already quite multi-threaded, and the thumbs are already pre-rendered for all the images once previews have been generated. Thus, the issue with grid scrolling isn't the one you've identified, it's something else, like perhaps the speed of accessing those pre-rendered thumbs, the speed of putting them up on the screen, or perhaps the speed of putting up the "other stuff" like drop shadows, metadata and badges.
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Damon Brodie

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Yes, the metadata is an issue. The thumbs start pixelated and then refine - so it must be rede seeing the thumbs a bit. In any event - the request is the same. Make the grid more responsive.
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Bryn Forbes

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I just did d a crop, synced across all files in a folder (~1000). Without manually scrolling through, lightroom didn't update all the thumbnails. Even if it doesn't manually detect idle, I'd like to be able to force lightroom to process all the thumbnails in the grid (and also pre load them in to memory -- with 64 bit I have tons of memory available, let me use it! load while I'm getting coffee not scrolling)
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Rob Cole

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You can manually initiate the thumbnail and other preview creation using the Library Menu - Previews...
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Lightroom doesn't seems to fully utilizing the CPU/memory. For example on export on my quad-core CPU, utilization often drops to 40-60%. It seems like the writing of the resulting files needs to be done asynchronously with reading/writing files

This reply was created from a merged topic originally titled
Full resource utilization.
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Dorin Nicolaescu-Musteață, Champion

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Need to merge into a more appropriate topic. Please reference the new topic here: Full resource utilization