On 06-04-2020 11:47, Ralph Corderoy wrote:
Hi Giancarlo,
Of course lzop will be faster than xz, but mkinitcpio's default is gz,
which should be comparable, at least in speed, with lzop.
A slap-dash test.
$ perf stat -e instructions gzip <initramfs-linux-lts-fallback >/dev/null
Performance counter stats for 'gzip':
19,533,249,541 instructions:u
19.642066695 seconds time elapsed
19.540737000 seconds user
0.100003000 seconds sys
$ perf stat -e instructions lzop <initramfs-linux-lts-fallback >/dev/null
Performance counter stats for 'lzop':
1,233,520,108 instructions:u
1.129177816 seconds time elapsed
1.092271000 seconds user
0.036743000 seconds sys
$
gzip is about twenty times slower.
1,233,520,108 / 19,533,249,541 = 0.0631497644777874596
1.129177816 / 19.642066695 = 0.05748772944994829119
Yes, my computer is probably slower than most, but then perhaps so is
the OP's.
Those outputs appear to be from unpacking initramfs.
I do think OP and Giancarlo were talking about creating an initramfs .
LW
