Chris Murphy wrote:
Has zstandard been evaluated? In my testing of images compressed
zstd, the CPU hit is cut by more than 50%, and is no longer a
bottleneck during installations. Image size does increase, although I
haven't tested mksquashfs block size higher than 256K.
I think increasing the size of the live images, also affecting the download
time and the time to write the image to media (even USB sticks are not
instant), to get a one-time installation speedup is a very bad tradeoff.