Lightroom CC 2015.2 and up: CPU usage on Export on 25 to 65% instead of 100%.

  • 7
  • Problem
  • Updated 2 years ago
  • Acknowledged
  • (Edited)
CPU Usage 25 to 65% instead of nearly 100%.

LR CC utilized all CPU Cores while the Export. Nearly nailed it on 100%. Great! Quick Export on a real Intel 6-core is nice.

LR CC 2015.2 and 2015.2.1 and even now 2015.3 - whoom... 25 up to 65%.

193 Pictures exported:
With LR CC 2015.1.1 = 07:30 Minutes
Ran the Update
With LR CC 2015.3 = 12:12 Minutes

Ehrm... This is a REAL annoying bug. When will you fix that?

(Win 10, 5820K, 32 Gig, all on SSDs)
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Stefan Redel

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Posted 3 years ago

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Stefan Redel

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Downgrade to 2015.1.1 helped immediately. So a bug is in there from 2015.2 on.
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Becky Sowada, Adobe Employee

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Hi Stefan,

This was an intentional change to address feedback from customers who need Lightroom to be more responsive while an export is in progress. It is a tradeoff - use more CPU and make exports fast, or use less CPU and make Lightroom more responsive. We feel the current CPU usage is an appropriate middle ground between the two extremes.

One note - if you kick off multiple simultaneous export sessions, that will use more CPU (each session takes an additional chunk).

Regards,
Becky
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Jakob-Tobias Winter

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it's plain annoying.
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Stefan Redel

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Hey Becky.

Hmmm. Ridiculous. I'm in the largest LR-Facebook-Community in Germany and noone else reported that problem. Several people wrote, that Export is nailed around 100% on their machines. Some people wrote, that the Export is the fastest ever. Hmmm. My logic says me, that cannot be a priority adjustment of the CPU-Power.

I don't know the Source-Code of LR and all the modules, but with my knowledge it should be a very easy thing to let the User chose by himself about that priority. In General Preferences. As well as a live switch on the Main-GUI. Let them chose the feeling they want. Name it "The Experience switch". :)

Hey, i have a really nice computer and LR is ugly SLOW. When exporting i don't want to work further on my pictures. Exporting normally means: I'm ready with the editing, give me the pictures. i'm waiting to copy them to the USB-Stick for my clients.
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Manuel Rusch

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Are you kidding me? That's not a tradeoff, LR was still pretty responsive while exporting at ~100% and I'm pretty sure that exporting ist the last step in the pipeline for the majority of all users. At the very least give us the option to choose the behavior ourselves. It just took me 20 min. to export 400 photos instead of probably 7 or so. My clients are waiting, i can't continue to work. This is an absolute no go!

I guess there's a reason why all my colleagues start switching to capture one. I never used to have any major issues wit LR, but in the past months it started stacking up, first i had some random white images while exporting, which was resolved finally after a couple of months...then you crippled the import dialogue, which you reverted thankfully, so please do the sensible thing and give us back our cpu power to get some work done.

I appreciate all the work you do, but get it together guys, seriously!
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Olafur Haraldsson

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This reply was created from a merged topic originally titled LIGHTROOM - Exporting many images at a time CPU usage.

When exporting many pictures at a time I see LR is not using all my CPU power (about 20-50% MAX). It seems to export in batches of 4 images at a time, I would really like to be able to change this to 8 or even 16 images processed at any given moment instead of the low number of 4 in settings somewhere.
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Jakob-Tobias Winter

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This reply was created from a merged topic originally titled LIGHTROOM - please improve multi-core support. spawn more threads when more proce....

upgraded to a bigger cpu only to find out lightroom doesn't fully use it.
please spawn more export processes if many cpu cores are present.
maybe make it customizable how much processes to fork.
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Manuel Rusch

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Kicking off multiple export didn't help at all. I am just exporting 4 sets of 160 some pics, a total of 653 pics. Total CPU usage is low. Also CPU clock speed isn't at max  either...
Performance is constantly low, multiple exports doesn't offer any additional benefit.









Please fix this issue.
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Jakob-Tobias Winter

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Same issue here. It could be _much_ faster.
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Olafur Haraldsson

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I am getting so tired of this, I am now exporting batch of 4,  467 Images each.

It has been exporting for 5 and a half hours and still not finished.

2015.4 Release.

CC is the slowest version of Lightroom ever made.

YES I have disabled GPU, it makes it even slower, I have TitanX so I cant get a faster card.

EDIT: I had a look at Date Created on the files, it is exporting about 4 files per minute, so 1 file from each batch per minute. This is stupid slow.

(Edited)
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Stefan Redel

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Just as an update from here: LR CC 2015.4 and nothing has changed. This Version is the slowest i know. In 2015.1.1 everything was fine. Please have a look at my very first post. Have a look at the time i stopped.
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Olafur Haraldsson

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This is getting embarrassing, I use Lightroom everyday and I have almost no hair left on the head it is soooo slow, anything it does is slow now, changing between Library and Develop is slow, working on the pictures is slow, exporting is extremely slow. I cant change back to older version as my catalog will not open.
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Jason Hicking

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I feel the pain of those who are seeing such slow exports and apparent lack of resource use.One of my clients is a school photography business, they use LR to import and cull all the images followed by exporting both a hi-res and lo-res version - we can be talking about anything from 1000-7000 shots per day over 8 Macs once all the shooters get back to base.
No matter how much hardware they throw at this, the export times are still very slow compared to what they could be if the hardware was used to its maximum. Doing the export in multiple small batches does speed up the export but this is a real pain with high volume work as there's always the chance that an image may be missed when selecting the next groups - this is a high pressure environment not a test lab that we're talking about here!
I certainly think that, as others have mentioned, there should be an option to balance the load depending on the users workflow requirements - not sure how you could do it but it would make you a lot of friends! ;)
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Manuel Rusch

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Installed newest update (2015.5)...the bug is still present, performance still terrible!

Why would you even limit your application to 50% CPU usage? I mean like for example if you were hungry, went out to get a burger at your favorite burger place, paid for it and then get only served half a burger, when you used to get a whole burger before...what would your reaction be? Do we need to file a class action lawsuit or something to get you to fix this issue? This is a significant problem for people who export more than a dozen photos...
(Edited)
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Manuel Rusch

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Just WOW! Exporting currently at 20% CPU usage...

:(
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Jakob-Tobias Winter

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any news? still waiting on you to fix the performance issue
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Ralf Ehlert

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A damn configuration option is not that hard to implement. I have a 6 core maschine and Lightroom should use the hardware for something useful!

The current memory leak in CC 2015.6 is a nightmare and the work to do to downgrade to the last functional release is painful as well.

Please Adobe: Fix the bugs that there introduced in the last releases and work HARD on the performance.
The possible integration between the Adobe eco system are good but they are useless if the basic requirements are failing.
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Assaf Frank

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Update - CC 2015.6 - if you restart and then do the export lightroom will use 100% CPU.
if I don't restart then lightroom use up to 20%.

Try it out and let us know if you experience the same behaviour maybe adobe can have some clues what to fix

I guess adobe messed it up at some point while trying to get the performance better.

there is an overall performance issue after working on few images and then I have to restart again. its totally unworkable... 4K Screen, 8 core i7 (16 treads), m.2 PCIE ssds, 64GB terrible.

Adobe please fix this mess.
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Stefan Redel

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As Adobe screwed up 2015.6 totally i had a rollback to 2015.5.1. Took me 10 minutes.
I have to wait for the next update. And this time i'm definitely not one of the first ones to try that.

And... If you don't want to rollback, just minimize, wait 8 secs and maximize. You don't have to restart LR.