I can't tell why yet but for some reason, when I tile an image using gdal2tiles.py it is much slower on an Ubuntu small. I have been using an ortho image from my project that is 68MB in size and here are the timings I get using this command time gdal2tiles.py -w none /code/data/239633.tif /tmp/tiles:
ghcr.io/osgeo/gdal:ubuntu-small-3.6.3
Generating Base Tiles:
0...10...20...30...40...50...60...70...80...90...100
Generating Overview Tiles:
0...10...20...30...40...50...60...70...80...90...100
real 0m46.449s
user 0m27.440s
sys 0m19.001s
ghcr.io/osgeo/gdal:ubuntu-full-3.6.3
Generating Base Tiles:
0...10...20...30...40...50...60...70...80...90...100
Generating Overview Tiles:
0...10...20...30...40...50...60...70...80...90...100
real 0m19.626s
user 0m19.488s
sys 0m0.130s