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Author Topic: Lr CC/6 CPU usage 100%  (Read 2760 times)

Paul Wright

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Lr CC/6 CPU usage 100%
« on: July 27, 2015, 12:39:32 am »

While I do like the features that shipped with Lr CC it hasn't been a great performer on my very powerful Win 8.1 PC ( 32Gb memory, i7 3.6GHz CPU & fully updated nVidia GTX 770 graphics ) Also using Wacom Intuos with latest drivers.

Lr CC scarcely functions with "Use Graphics Processor" checked, mainly in the form of non-responsive or unresponsive sliders. With "Use Graphics Processor" unchecked Lr CC becomes usable, though frustratingly so. If I've got a big job on an urgent deadline I'm more likely to process the Canon DNG's on Lr 5.7 which thankfully is still installed. Today I did a side-by-side test of CPU usage processing the same set of DNG's. Lr 5.7 hovered around 50% CPU usage whereas Lr CC was hogging the lot with usage bumping between 95-100%. And unsurprisingly the process time was considerably longer. Gasp.

I'm perplexed and irritated. Lr CC was meant to be the a more efficient speed demon. Help!

-pw
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Paul2660

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Re: Lr CC/6 CPU usage 100%
« Reply #1 on: July 27, 2015, 01:37:24 pm »

I can't speak to win 8.1, however LR CC had some similar issues with my win64 machine, i7 3.2 ghz, 32GB ram machine.  I moved the catalog off of C, where it has always been with previous versions and the difference was amazing. 

CPU usage for my machine will hit close to 50% to 70% briefly, but when I am just working in an image, with the sliders, etc, it tends to be at 25% and then only briefly. 

You might try moving the catalog and or a total reinstall of LR CC. 

Paul 
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Paul Caldwell
Little Rock, Arkansas U.S.
www.photosofarkansas.com

Paul Wright

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Re: Lr CC/6 CPU usage 100%
« Reply #2 on: July 27, 2015, 11:23:31 pm »

Thanks Paul, I'll give anything a try, but intuitively this won't do much as the C drive is SSD and anywhere else is regular 7200 rpm HDD.

-pw
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PeterAit

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Re: Lr CC/6 CPU usage 100%
« Reply #3 on: July 28, 2015, 09:57:08 am »

I am running LR CC 2015 on a very similar hardware setup except I am using Win 7. I never see issues such as you describe. Could it be your Windows version? Seems unlikely, though. I won't claim that CC is faster than 5.7, and subjectively I might say it's a wee bit slower, particularly when switching to Photoshop for editing (bu that could be PS CC also). You are sure, I take it, that no other process is eating those CPU cycles?  FWIW, my program and OS are on a RAID 0 array and the catalog and images are on a separate RAID 0 array.
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Paul2660

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Re: Lr CC/6 CPU usage 100%
« Reply #4 on: July 28, 2015, 12:19:39 pm »

Thanks Paul, I'll give anything a try, but intuitively this won't do much as the C drive is SSD and anywhere else is regular 7200 rpm HDD.

-pw

Hi Paul

I thought the same thing as my OS is on an SSD also. But that drive is now arounf 2 years old or close and in my experience more than likely pretty fragmented.  I had a 2nd SSD that I only use for Cc scratch drives so I moved the LR there off of the Drive the OS is on. The difference in performance was like night and day for me.

Paul
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Paul Caldwell
Little Rock, Arkansas U.S.
www.photosofarkansas.com
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