Massive tmp file from photomerges

New Here ,
Dec 29, 2018 Dec 29, 2018

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I'm having an issue where lightroom creates an insanely massive tmp file and fills up my hard drive space. The photo cache is set to 5gb, but some times I can find a 40gb+ tmp file in my local temp files.

This is what my C: drive looks like before an HDR pano merge.

filebefore.jpg

This is what it looks like after 1 merge. About 50 photos in that one merge. I have to close lightroom and manually delete this block if I want to do any more photo merges. It gives me an error not enough space message each time.

fileafter.jpg

Here is what windirstat says about the file. This file size is insane and almost 40x times as big as all of the original RAW sizes combined.

windirstatfile.jpg

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Community Beginner ,
May 30, 2022 May 30, 2022

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I also get a cr_sdk file in the same location as you. But I'm not doing photo merges (believe i was building 1:1 previews). Windows says it still has free memory during (and after) the operation.

 

Anyone know the cause of this file? 

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LEGEND ,
Jun 03, 2022 Jun 03, 2022

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LrC CATALOG LOCATION:

 

  • Where do you keep your catalog? What drive? That C drive looks tob]have only 19% free space, not good for a LrC catalog. That other drive, something like 35% free??? Not that catalog location will help with OS temp file size. But moving catalog off of the C drive might help with CX drive free space. Many state that LrC needs to have at least 25% free space on the drive containing the catalog.

 

CAMERA RAW CACHE LOCATION /  SIZE ALLOWED:

 

  • The Camera RAW CACHE is not the OS temp file. But where do you keep it? On a Windows computer, if you have it on the C drive, it will compete with the OS Paging file (typically on drive C) for read/wrights. Best if not on C drive. And while on the Camera RAW CACHE, the default 5 GB is way too small, many bump that up, something like 40 GB maybe 50 GB. I do not know if LrC first uses the Camera RAW CACHE before using TEMP (I have never ever resolved for myself, just where Photo Merge CACHE occurs)

 

Note, the location for the catalog and the location for Camera RAW CACHE, can take advantage of drive speed, the location of photos does not.

 

Note, the Library preview files cannot be on a different drive than the catalog.

 

OS TEMP FILE LOCATION

 

 

FIX

 

  • All I can think of is controlling where the catalog is, where the Camera RAW CACHE is and where the OS Temp file in question is. Freeing up space on the C drive, and offloading temporary drive use to a different more available drive.

 

 

 

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Adobe Community Professional ,
Jun 04, 2022 Jun 04, 2022

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Comment withdrawn.

 

Regards, Denis: iMac mid-2015, 5K 27”, GPU 2GB, Ram 24GB, HDD 3TB, macOS 11.6.8,; LrC 11.4.1, Lr 5.4.1, Ps 23.3.2-ACR 14.4,; Camera OM-D E-M1.

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Adobe Community Professional ,
Jun 04, 2022 Jun 04, 2022

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I'm not sure why you're so surprised at the size of this file. Of course it will be big. 40 GB doesn't seem unreasonable to me. If you use Photoshop, you'll know that 40 GB can be eaten up in an instant when you work with big files.

 

Where I do agree with you, is that it should be possible to move temp files to a disk of your choice. Like Photoshop, where you can put the scratch disk wherever you want. That's not possible with Lightroom, and I believe the reason is that Lightroom doesn't have its own memory management. So it has to use the OS pagefile. I suppose it was never really necessary - until now when you can make these huge panos.

 

Under normal operation, excluding panos, Lightroom doesn't really use or need a lot of memory.

 

So while I would certainly support this as a feature request, I suspect it's not really easy to implement. The Lightroom architecture currently doesn't have the tools.

 

All that said, you really are living dangerously with only 40 GB free on the system drive. A "standard" configuration of operating system and applications shouldn't take up more than around 90 - 110 GB, so there is room for some cleanup there. Here's my system drive, and I have 6 major CC apps installed. All app caches have been moved elsewhere:

system_disk.png

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