reduce compression level inside zip files

[syphar]

I did some tests.

going from level 6 (the default) to level 3 gives us 25% performance improvement for 10% bigger zip files.

[GuillaumeGomez]

Do you have the numbers for each level?

Also: is it more important to generate zip files faster or to reduce storage?

[syphar]

Do you have the numbers for each level?

I did measurements for 6 (default), 3 (this value), and 1.
The improvement for 1 was much less than hoped, so I left it at 3.

Also: is it more important to generate zip files faster or to reduce storage?

Right now: faster zip files :)

[GuillaumeGomez]

For posterity sake, might be worth having a nice table with each level impact on speed and size. Well, I love numbers but feel free to ignore me. 🤣