talos/cmd/installer
Andrey Smirnov 6d6ed1170f chore: use parallel xz with higher compression level
Preset `-0` for xz means fast compression but low compression level.
Changing this to `-6` (default) means that result is 10% smaller (tested
with RPi4 image).

Enable parallel compression with number of threads equal to number of
CPUs to make it compress even faster then with `-0`:

* `-0`: 15s
* `-6`: 60s
* `-6 -T 0`: 10s (on my machine, depends on number of cores)

Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
2021-08-06 12:51:31 -07:00
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