Why doesn't Photoshop & Lightroom release memory for future use after a photo is saved & closed?

  • 3
  • Problem
  • Updated 2 years ago
  • (Edited)
I know this question has been asked years ago, but it still causing problems. I have  32 GB RAM I just finished a 2 picture panorama; I saved & closed all 3 pictures, went to Lr & was viewing pics full screen & Lr froze. I opened Task Manager & Ps was still using 5 GB RAM & so was Lr. Everything should still work fine with 20 GB RAM remaining, but it doesn't. There is no reason for Ps to hold onto the memory in RAM, the files are closed. I closed & reopened Ps & Lr & then only 300 MB each were being used.
Lightroom version: CC 2015.7 [ 1090788 ]License: Creative Cloud
Operating system: Windows 10
Version: 10.0
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 4.0 GHz
Built-in memory: 32685.8 MB
Real memory available to Lightroom: 32685.8 MB
Real memory used by Lightroom: 794.2 MB (2.4%)
Virtual memory used by Lightroom: 807.3 MB
Memory cache size: 430.2 MB
Maximum thread count used by Camera Raw: 8
Camera Raw SIMD optimization: SSE2,AVX,AVX2
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Displays: 1) 1920x1200, 2) 1920x1080
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info: 
AMD FirePro W5100

Check OpenGL support: Passed
Vendor: ATI Technologies Inc.
Version: 3.3.13456 Core Profile Context FireGL 21.19.141.0
Renderer: AMD FirePro W5100
LanguageVersion: 4.50


Application folder: C:\Program Files\Adobe\Adobe Lightroom
Library Path: A:\Adobe\Lightroom\Lightroom-2.lrcat
Settings Folder: C:\Users\kenro\AppData\Roaming\Adobe\Lightroom

Installed Plugins: 
1) AdobeStock
2) Canon Tether Plugin
3) ColorChecker Passport
4) Facebook
5) Flickr
6) Leica Tether Plugin
7) Nikon Tether Plugin

Config.lua flags: None

Adapter #1: Vendor : 1002
Device : 6649
Subsystem : 30c1002
Revision : 0
Video Memory : 4073
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Ken Rounds

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Posted 2 years ago

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Photo of John Maguire

John Maguire

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I ask the same question awhile ago and was told that even though task manager shows PS or LR is still holding the memory it is free for other programs to use. My question than was why does PS freeze. They response was it wasn't related to PS. LOL. I wish they just admit to a memory leak and fix it!
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John Maguire

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If you can, check the efficiency reading at the lower right in PS. With your system specs it should not dip below 100%. Just want to gather as much data as possible. Not sure if there is one in LR as I'm not a fan!
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Ken Rounds

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I don't see an efficiency reading in the lower right. Where is it exactly in PS?
(Edited)
Photo of John Maguire

John Maguire

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sorry. lower left. here's a pic. Click the > if it doesn't show efficiency.


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Ken Rounds

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Mine said 'doc size', then I realized I could click on the arrow & there were several choices, one of them was Efficiency! Thanks for the help!