Feature request: Add a menu for changing PZSTD compression level during image creation

[Ian Bell]

Please allow us to increase the compression level beyond 3, since this algorithm is so fast.

[Jeremy Boden]

The compression algorithm levels are not generally particularly responsive in terms of compressability to the level number. They can use a lot more CPU time to give a tiny improvement in space used.

[Steven Shiau]

@Jeremy,
You are right, and that's why we did not provide such a feature. However, I believe some people would like to have an option for this. Therefore we will try to add that in the future.
Thanks.

Steven

[Steven Shiau]

Thank you foryour suggestion. Actually you can manually edit /etc/drbl/drbl-ocs.conf, and assign the level you like to:
extra_bzip2_opt="-3"
extra_lzop_opt="-3"
extra_lzma_opt="-3"
extra_xz_opt="-3"
extra_lzip_opt="-3"
extra_lrzip_opt="-L 3"
extra_lz4_opt="-1"
extra_zstd_opt="-3"
...
extra_pzstd_opt="-3 -p $cpu_no"

However, I think there is no problem to add a dialog menu in expert mode. We will keep this in mind and add this in the future.
Thanks.

Steven