P: Network speed drops significantly with Lightroom Classic open.

[boondock]

LRC 14.0.1 - Camera Raw 17.0

ProArt Z790 Motherboard

Intel Core i9-13900K

64GB Ram

Nvidia RTX 3090

OS & LRC are installed on a 2TB Samsung NVMe drive with over 700GB free.

Images are on an EditShare NAS, 30TB "partition" with 12TB free.

I was struggling with an import of a large number of images (about 750,000 from a multi-year time-lapse). The images are GoPro Raw (.gpr) and just over 5MB each. I initially thought that maybe trying to import them to an existing catalogue was causing the issues, so I created a new catalog. That didn't change anything.

I thought then that the issue with the long import time was just the number of images, so I left it running over my long holiday, about 4.5 weeks.

I came back today and it had barely processed 33% and was still going! Some additional troubleshooting I tried was in resetting the preferences (that didn't work) and then trashing the preference file manually (that didn't work). I thought maybe the cache was overloaded, but it's set to 200GB (the max allowed) and the cache folder is only 65GB large. I then thought to test my disk transfer speeds.

The images are stored on a NAS over a 10Gb fiber connection. The images are being imported in place (added). Build previews is set to Minimal and Smart Previews is checked. At the time of testing (and during importing) I was the only one using/accessing the NAS. With Lightroom closed, I ran Black Magic Disk Speed Test with a 1GB test file and was getting 346MB/s Write, 825MB/s Read. As soon as I open Lightroom (just open, it's literally doing nothing else. No importing, no editing, no preview generation) the disk speed drops to 10MB/s Write and 9MB/s Read. What's even more odd is that this persists after closing Lightroom, as Lightroom moves from the "Apps" to "Background Processes" in the Task Manager. As soon it drops out of Background Processes, or I End Task, the Speed Test results come back.

While idling in this catalog, LRC is using less than 1% cpu, 6.5GB Ram, 0MB/s Disk and .1Mbps network.

This doesn't happen with other Adobe apps we use, Premiere, Illustrator, Photoshop etc. (we use the same NAS for video editing from and no issues with disk speed). With other Adobe apps open I've run the disk speed test to both the folder where the images are stored as well as to other Media Spaces (what Editshare calls the individual partitions) and results are normal. With Lightroom open, the disk speed results drop to all folder locations, not just the image location.

I'm at a loss for what could be going on and why LRC (and only LRC) is trashing my network throughput when it's literally doing nothing.

[GoldingD]

Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut out as that is just so much dead space to us non-Techs and it takes up vast amounts of scroll space making the reply less readable and less likely that others will bother with your post. Also large amounts of text in a post also render the Translate function inoperable...

Mostly interested in this part:

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
Library Path: W:\Active Projects\Photography\test\test-v13-3.lrcat
Settings Folder: C:\Users\DavidsLocal\AppData\Roaming\Adobe\Lightroom

[boondock]

Thanks for responding. I posted this as my last task before leaving the office. I'll update with the requested info as soon as I'm in tomorrow. 

[boondock]

Here's everything up to the end of the plugins:

Lightroom Classic version: 14.0.1 [ 202410161356-30922cfc ]

License: Creative Cloud

Language setting: en

Operating system: Windows 11 - Business Edition

Version: 11.0.22631

Application architecture: x64

System architecture: x64

Logical processor count: 32

Processor speed: 2.9GHz

SqLite Version: 3.36.0

CPU Utilisation: 0.0%

Power Source: Plugged In

Built-in memory: 65243.9 MB

Dedicated GPU memory used by Lightroom: 225.7MB / 24326.0MB (0%)

Real memory available to Lightroom: 65243.9 MB

Real memory used by Lightroom: 3614.1 MB (5.5%)

Virtual memory used by Lightroom: 3712.7 MB

GDI objects count: 694

USER objects count: 2184

Process handles count: 2493

Memory cache size: 3417.1MB

Internal Camera Raw version: 17.0 [ 2043 ]

Maximum thread count used by Camera Raw: 5

Camera Raw SIMD optimization: SSE2,AVX,AVX2

Camera Raw virtual memory: 372MB / 32621MB (1%)

Camera Raw real memory: 373MB / 65243MB (0%)

Cache1: 

NT- RAM:0.0MB, VRAM:0.0MB, Combined:0.0MB

Cache2: 

m:3417.1MB, n:0.0MB

U-main: 99.0MB

System DPI setting: 96 DPI

Desktop composition enabled: Yes

Standard Preview Size: 5120 pixels

Displays: 1) 5120x1440, 2) 3840x2160

Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info: 

DirectX: NVIDIA GeForce RTX 3090 (32.0.15.6614)

Init State: GPU for Export supported by default

User Preference: Auto

Enable HDR in Library: OFF

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic

Library Path: C:\Users\Christopher\Pictures\Lightroom\Time-Lapse2\Time-Lapse2.lrcat

Settings Folder: C:\Users\Christopher\AppData\Roaming\Adobe\Lightroom

Installed Plugins: 

1) AdobeStock

2) Flickr

3) LRT Export 7

[GoldingD]

Library Path: C:\Users\Christopher\Pictures\Lightroom\Time-Lapse2\Time-Lapse2.lrcat

Ok, nothing odd with that library path. I take it you are well aware of reasons to avoid OneDrive. with LrC. OneDrive was my initial suspicion.  As you probably know getting OneDrive involved could/would degrade LrC performance. The Library path would have looked more like:

C:\Users\Christopher\OneDrive\Pictures\Lightroom\Time-Lapse2\Time-Lapse2.lrcat

So, nope, not that.

By the way, any sync to cloud going on? As you may be aware since v13.something, the has been an issue.

Oh frig, I should also ask, by any chance, are their any video files in the folder you are importing from? Problem since v14.something.

[Rikk Flohr: Photography]

We've not been able to reproduce this internally but the team has requested an investigatory ticket. They may contact you directly. 

Thank you for your report. 

[boondock]

Nope, definitely not using OneDrive or sync to cloud options. The folder also only contains the .gpr files. No video or even .jpg files.

[boondock]

Thanks for the response Rikk. Happy to respond to any direct contact.