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Bug 795017 - "render" effect during manipulations
"render" effect during manipulations
Status: RESOLVED DUPLICATE of bug 694917
Product: GIMP
Classification: Other
Component: General
unspecified
Other Linux
: Normal normal
: ---
Assigned To: GIMP Bugs
GIMP Bugs
Depends on:
Blocks:
 
 
Reported: 2018-04-05 22:18 UTC by Roman
Modified: 2018-04-06 14:26 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Roman 2018-04-05 22:18:35 UTC 
Gimp 2.9.9 (also noticed since 2.8).

Every manipulation with layers or image itself, as for example: levels, curves, hue/saturation, layer transparency and so on, leads to slow image redrawing. Line after line, I call it "render" effect. I think it's about performance. 
My system is 2xAMD Opteron's 6128, 16 cores (in total), 16 Gb of RAM, SSD, Nvidia 1050Ti. Ubuntu 16.04 LTS.

Performance settings in Gimp: total cache size 13 Gb, max undo memory 2gb, max new image size 512 Mb, threads to use 16 (as cpu cores), 5 levels for undo.

I use RawTherapee too with same images (raw, tiff, jpeg), and never noticed effects like this, every manipulation gets visible in a tick. Why does Gimp act this way?
Comment 1 Simon Budig 2018-04-06 14:26:33 UTC 
There is ongoing work on improving the performance of the image view for GIMP. The use of comparisons to totally different applications is not that helpful, since Gimp tends to do quite a lot more than other applications. However, we'll continue on improving the speed.

Closing as DUPLICATE of the bug #694917 which we use to track these performance issues.

*** This bug has been marked as a duplicate of bug 694917 ***