Possible memory leak in LR 6.x

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  • Updated 3 years ago
Possible bug/memory leak in LR 6.x. Here's what I did to cause it.

1) From a folder containing, say, 100 photos, choose, "Export this Folder as Catalog."

2) Import the exported catalog on a target computer. In my case, I'm moving photos from a laptop to a desktop.

3) Add another 100 or so photos to the original catalog (i.e., on the laptop).

4) Do step 1 again, as above, exporting the same folder as a catalog, though with 100 new photos.

5) Before importing on the target computer, go into the folder containing the exported photo files and delete those already imported on the target machine. I deleted these photos to save time when transferring photos over the Internet.

Upon import on the target machine, Lightroom will begin "Checking for Duplicates." At this point, the program chewed through memory, gigabyte after gigabyte, in my case going from about 1 gigabyte used to over 9 gigabytes.

The catalog on my target machine contains about 60,000 images.
Photo of BJToepper


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Posted 3 years ago

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Photo of Ann Shelbourne

Ann Shelbourne

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Lr is a voracious RAM-hog — as you have just noticed.

I also work with large quantities of images (my last expedition yielded 12,700 new ones) and Lr can't begin to cope.

I use a MBP when travelling and I admit that I work with huge numbers of files in a Folder and/or in a Lr Collection.

With a largish Collection but with only 6 actively Selected files in Lr, Activity Monitor shows that Lr has grabbed virtually all 8GB of the RAM in my laptop.

On the other hand, I can have 200+ files open in filmstrip-view in ACR (all of them being live-edited simultaneously!) and ACR is using precisely TWO GBs of RAM!

The need for an excessive amount of RAM is the problem with Lr: and it probably stems from its basic architecture and original design. It also explains why we experience the continuous Slow-downs,spinning Pizzas, endless Freezes and crashes in Lr.

I doubt if this problem is truly fixable — unless Lightroom is rebuilt from the ground-up?

Meanwhile unadulterated ACR is wonderful and remains my RAW-editor of choice!