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Dimizu
Known Participant
September 22, 2016

P: Slow performance on Xeon CPUs

  • September 22, 2016
  • 234 replies
  • 9088 views

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?

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    234 replies

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    bob frost
    Inspiring
    September 25, 2016

    I don't have any other slow problems, only preview rendering slowing down with time - overnight for example. I don't have a 4K monitor, but I can use the performance setting for gpu without problems. My graphics card is a Quadro K2000; NVidia and AMD cards often gave problems in the past since the drivers are designed for games. The Quadro drivers are designed for stability.


    Bob frost

    Todd Shaner
    Todd Shaner
    Legend
    September 25, 2016
    How does your system perform with  extensive Adjustments Brush or Clone tool usage, Crop tool, Tone control slider response, Luminance slider response, or other performance issues after editing multiple image files. That's what the OP here is complaining about. More details: https://forums.adobe.com/thread/2210245
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    bob frost
    Inspiring
    September 25, 2016

    I have an i7-5830K cpu and rendering 1:1 previews takes about 6/7 secs with 6/12 processors, but 10/12 secs using just 4/8 processors. So LR does seem to be able to use 6/12 processors efficiently.


    Bob Frost

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    FeedbackCommunityMember
    Inspiring
    September 25, 2016
    I have just a horrific experience with performance and lightroom in Windows 10 with a Xeon CPU Desktop I built for Photo Editing in Lightroom/Photoshop and video editing. 

    Premier, Photoshop, work tremendously well - no issues. 

    Lightroom - a piece of garbage. 

    https://forums.adobe.com/message/9026722#9026722
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    DimizuAuthor
    Known Participant
    September 24, 2016
    What I did notice is that CPU Usage never exceeds ~50% when using the Tone controls or Adjustment.
    I can confirm. Hyperthreading on/off no big difference.
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    DimizuAuthor
    Known Participant
    September 24, 2016
    I had already tested with hyperthreading off. Slight improvement, but only very slightly...
    johnrellis
    johnrellis
    Legend
    September 23, 2016
    "But I find here in the forum also people using 6 and more cores with problems! Examples: https://feedback.photoshop.com/photoshop_family/topics/lightroom-2015-6-extremely-slow"

    Thanks for finding that. I searched last night for similar reports but didn't find any.  I'll consider whether to merge this topic in with the others.   In general, it's important that all the reports of similar problems are merged into one thread, so that Adobe can properly appreciate the scope of the problem. But merging partially hides the existing replies.
    johnrellis
    johnrellis
    Legend
    September 23, 2016
    "I think that this excludes memory problems."

    Agreed.
    johnrellis
    johnrellis
    Legend
    September 23, 2016
    It isn't surprising that some sliders use parallelism more effectively than others.  Adobe engineers have long indicated that much of the Camera Raw pipeline is inherently not easily parallelizable (thus, the difficulties of effectively using GPUs).  
    Todd Shaner
    Todd Shaner
    Legend
    September 23, 2016
    I ran a similar LR CC2015.7 test with Canon 5Ds 50 Megapixel raw files. The Basic controls and Adjustment Brush performance was very acceptable and virtually the same as when processing Cannon 5D MKII 21 Megapixel files. Given the 5Ds resolution is more than 2x the 5D MKII files I expected to see a proportional slow down (lag) in the controls and Adjustment Brush.

    What I did notice is that CPU Usage never exceeds ~50% when using the Tone controls or Adjustment. When adjusting the Detail panel Luminance slider all 8 cores (4 core processor with Hyperthreading enabled) are at 100%. This is with an i7-860 quad-core processor:

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