[arch-general] Multi-threaded mkinitpcio

Jelle van der Waa jelle at vdwaa.nl
Sat Apr 4 15:13:21 UTC 2020

On 04/04/2020 12:11, Pascal via arch-general wrote:
> I don't quite understand where the reproducibility is broken ?

multi-threaded compression does not create a predictable reproducible
archive (for xz/zstd).

> Amin Vakil says that rebuilding his initrd (when updating kernel and/or
> modules) takes a lot of time and the final compression phase can be reduced
> by switching to lz4 or lzop. when you go from xz (which may be his case) to
> lzop, the difference is remarkable.

Sure, has nothing to do with reproducibility however.

> Le ven. 3 avr. 2020 à 14:47, Giancarlo Razzolini <grazzolini at archlinux.org>
> a écrit :
>> Em abril 3, 2020 3:17 Pascal via arch-general escreveu:
>>> hi,
>>> change the COMPRESSION variable to lz4 ou lzop in your
>> /etc/mkinitcpio.conf
>>> : it will considerably reduce the compression time.
>> And break reproducibility. Also, I wouldn't say considerably. Might be
>> faster,
>> but not leaps and bounds faster.
>> Regards,
>> Giancarlo Razzolini

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