Photoshop CC 2018: Seems to 'eat up' spare HD space again

Question

I have just updated to the latest Photoshop 2018 and have been working on photos all day. I noticed that my free HD space has "shrunk" by about 40GB in a matter of a couple of hours. I know I've seen that happen before, and it was fixed in one of the previous releases (I posted about it, then I actually thought it was Lightroom's fault).

I've used them both today, but I've now quit LR but still see the space being gone. My HD is almost maxed out, it got to just a few GB's of spare space.

Please investigate ASAP

Mac OS 10.12.6

Svetlana Day · Answer

Immediately before and after I quit photoshop.  When I quit, I got a message saying that the clipboard is really large and can't be exported. Why is 40gig of data saved in clipboard??

Jeffrey Tranberry · Answer

What sort of operations are you performing? Painting, batch processing, actions?

Adam Jerugim · Answer

Hi Svetlana,While I doubt Photoshop is holding 40GB of data in clipboard, it does continue to use RAM until the app is quit and relaunched (when it needs more, otherwise it'll re-use the RAM it already has allocated).  All RAM that's used by PS is also mapped to your hard drive which would explain some of the disc usage you're seeing.It would really help if you could describe your workflow.  What exactly are you doing with images?  Are you copying data/selections and pasting them into other images?  Any information would be helpful so that we can try to replicate what you're seeing here.Thanks,Adam

Svetlana Day · Answer

Hi Jeff, Adam,Thanks for the quick reply. In this current session, I wasn't doing much of copy/paste, except for one small section of one of about 20 images I edited. I was simply re-saving a bunch of my TIFF files with a compression (I had them all uncompressed). I have photoshop running now again, with about 7 images open, doing the same thing, and my HD space went down by 20GB now. I realize that the RAM used maps to HD space, but I don't think my usage should equate to 40GB of hard drive space. Here are some memory and HD stats as of right nowLet me know if I can share anything else that's helpful.Thanks,Svetlana

Svetlana Day · Answer

And after I quit Photoshop it's up to 77GB from 41GB. No trash has been emptied, no other apps (besides the browser and the file manager) actively used

Adam Jerugim · Answer

Svetlana, what size/file type/bit depth/# of layers are the files you're opening?  I'm not seeing that much disc space being used opening files, but I must be using smaller images.  Thanks.

Adam Jerugim · Answer

Also, if you could set the image window info to scratch sizes (see below), and tell me what those say when your disc is filling up, that would be really helpful. Thanks again.

Svetlana Day · Answer

After finishing and quitting, I'm up to 94GB. The file was flattened and saved as a 1GB TIFF somewhere in the middle of the process, but the HD space didn't change until after I quit Photoshop.