Results on a Pi 4B booting from SD card. Stock noble:
$ sudo hyperfine -r 5 "update-initramfs -u"
Benchmark 1: update-initramfs -u
Time (mean ± σ): 189.984 s ± 1.618 s [User: 75.720 s, System: 115.323
s]
Range (min … max): 187.319 s … 191.142 s 5 runs
Then running the branch from
https://code.launchpad.net/~bdrung/ubuntu/+source/initramfs-
tools/+git/initramfs-tools/+ref/ubuntu/devel :
$ sudo hyperfine -r 5 "update-initramfs -u"
Benchmark 1: update-initramfs -u
Time (mean ± σ): 98.473 s ± 2.263 s [User: 26.061 s, System: 73.138 s]
Range (min … max): 95.923 s … 101.560 s 5 runs
So that's a pretty substantial improvement. Still not *quite* at the mantic
level, but it's in the same ball-park now, and that's not including the changes
to lvm2 or cryptsetup.
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https://bugs.launchpad.net/bugs/2065180
Title:
performance regression in dracut-install 060
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