Lightroom: Slow performance on Xeon CPUs

  • 22
  • Problem
  • Updated 11 months ago
  • (Edited)
I noticed that LR clone and brush tool on my XEON E5-1650 0 3.20GHz (Attention: E5-1650 0 and not E5-1650 v4) can not stress my CPU and after x minutes of working LR slow down, until I have to restart it.

Please see the full diskussion with the problem here: https://forums.adobe.com/thread/2210245 (test with different Lightroom versions, confrontation with a weak laptop, that works fine, tests wit other graphic grafic card, test with other bios settings etc. No results. Only restart LR or minor display resolution helps.)

Can anyone with an XEON E5-1650 0 3.2Ghz confirm this?
Photo of Dietmar Mitterer Zublasing

Dietmar Mitterer Zublasing

  • 29 Posts
  • 11 Reply Likes
  • frustrated

Posted 2 years ago

  • 22
Photo of Simon Chen

Simon Chen, Principal Computer Scientist

  • 1499 Posts
  • 480 Reply Likes
Official Response
What does Lightroom's Help>System Info... say? It should report the processor count and the maximum number of thread count used by the image processing pipeline?

Some made the observation that Lr was performant right after a launch and then gets slower after intense brushing. Is it on a single photo or do you typically have to walk several photos to reproduce it? Do you remember which version of Lr this started to happen? Do you have Lr mobile sync turned on? What happens if you pause the sync and then relaunch Lr?
Photo of Simon Chen

Simon Chen, Principal Computer Scientist

  • 1499 Posts
  • 480 Reply Likes
Official Response
@Dietmar reported that the issue is found to be in 2015.5, 2015.5.1, 2015.6, 2015.6.1 as well. It would be helpful to post the Lightroom's Help>System Info...
Photo of Simon Chen

Simon Chen, Principal Computer Scientist

  • 1499 Posts
  • 480 Reply Likes
Official Response
@Dietmar You've provided additional detailed info in https://forums.adobe.com/thread/2210245. That is very helpful. Are the summary of your previous findings (copied as-is) still applies with the Lr 2015.7 and Camera Raw 9.7 release?

Summary
  1. LR/Camera Raw has definitive a performance problem with some - especially my high-quality – PCs!
  2. I can reproduce the problem and I can demonstrate that the problem on other - especially my weak – PCs not persist or is not so strongly.
  3. With GPU on the problem increase drastically!
  4. Camera RAW from Bridge and Photoshop have the same problem.
  5. With higher lightroom version the problem increase! Also with the newest 2015.6.1!
  6. Camera Raw Cache amll/big. No difference.
  7. Minimize LR, not helps or helps only minimal.
  8. Downgrade helps a little, but not eliminate the problem in general.
  9. Restart LR, helps but restart LR every X images are not a good workaround!
  10. It is very frustrating that with LR my weakness machine is better than my best PC!
Photo of Simon Chen

Simon Chen, Principal Computer Scientist

  • 1499 Posts
  • 480 Reply Likes
Official Response
Can you folks pin-point for certainty the specific version of Lightroom that starts exhibiting the same performance issue under the same machine setup? That would be helpful us to figure what happened. 

Here is a link where you can rollback to the earlier Lightroom versions https://helpx.adobe.com/lightroom/kb/lightroom-downloads.html.
Photo of Simon Chen

Simon Chen, Principal Computer Scientist

  • 1499 Posts
  • 480 Reply Likes
Official Response
If you are an existing Lr Classic CC customer, and would like to test out a developer preview build that we think fixes this performance issue. Please send me a note and I'll make sure that you are invited to the prerelease program. Thanks.