I am using DT 4.2
As part of ‘culling’, DT takes rather more time to show the image at 100%. I have the files on an internal HDD. I am thinking that HDD is leading to slow speed. Files being opened are Sony Compressed RAW (.ARW) . File size is 25mb. Let me know if you encountered this problem and how you resolved.
I am exploring the option of using PCIe 4.0 1TB SSD drive for storing the images. On paper this is 10times faster than SATA HDD which I am currently using.
I shoot at 20FPS and it produces heap of pictures. Going through every image at 100% is taking long time.
Even HDDs have high enough transfer rates. I also store my photos on an HDD.
Run darktable with -d perf to see which processing step takes long. If you have a GPU, make sure it is properly utilised. -d opencl may help troubleshooting.
I think the normal view in the lighttable is derived from the embedded JPEG preview, whereas the zoomed view is calculated from the raw, and hence slower.
I think there’s still an exception for when the embedded jpg preview is too small - as is the case with my early Sony mirrorless cameras. At least, that’s what happens with me.
After importing images, I normally close Dt and run darktable-generate-cache -m5 from cli (see manual for params). That speeds up culling significantly, because previews are generated at once and stored in cache.
I did upgrade and was busy setting Ubuntu, so could not respond. Installation was not straight forward and had to disable TPM etc. Finally everything is ready. Last night I tried culling and it was fast compared to past.
I am attaching the screen shot of the processing-setting in DT. Please let me know if I need to change anything. I guess enabling “full preview cache” may help, provided that I am able to generate full-preview using CLI, before I open the UI.
