Tested on amd64 laptop in a chroot. Without noble-proposed:
```
$ schroot-wrapper -c noble -u root -p
initramfs-tools,cloud-initramfs-copymods,cloud-initramfs-rescuevol,cloud-initramfs-dyn-netconf,cloud-initramfs-growroot,cloud-initramfs-rooturl,cloud-initramfs-updateroot,overlayroot,hyperfine,linux-image-generic
# hyperfine "update-initramfs -u"
Benchmark 1: update-initramfs -u
Time (mean ± σ): 7.952 s ± 0.232 s [User: 2.699 s, System: 5.750 s]
Range (min … max): 7.539 s … 8.394 s 10 runs
# lsinitramfs /boot/initrd.img > /files
# dpkg -l | grep -E
'(cryptsetup|initramfs|dracut|open-iscsi|lvm2|thin-provisioning-tools|overlayroot)'
ii busybox-initramfs 1:1.36.1-6ubuntu3.1
amd64 Standalone shell setup for initramfs
ii cloud-initramfs-copymods 0.48 all
copy initramfs modules into root filesystem for later use
ii cloud-initramfs-dyn-netconf 0.48 all
write a network interface file in /run for BOOTIF
ii cloud-initramfs-growroot 0.48 all
automatically resize the root partition on first boot
ii cloud-initramfs-rescuevol 0.48 all
boot off a rescue volume rather than root filesystem
ii cloud-initramfs-rooturl 0.48 all
use a tarball or squashfs image in a url as the root filesystem
ii cloud-initramfs-updateroot 0.48 all
extract a tarball over root filesystem before pivot
ii cryptsetup 2:2.7.0-1ubuntu4
amd64 disk encryption support - startup scripts
ii cryptsetup-bin 2:2.7.0-1ubuntu4
amd64 disk encryption support - command line tools
ii dracut-install 060+5-1ubuntu3.2
amd64 dracut is an event driven initramfs infrastructure (dracut-install)
ii initramfs-tools 0.142ubuntu25.1 all
generic modular initramfs generator (automation)
ii initramfs-tools-bin 0.142ubuntu25.1
amd64 binaries used by initramfs-tools
ii initramfs-tools-core 0.142ubuntu25.1 all
generic modular initramfs generator (core tools)
ii libcryptsetup12:amd64 2:2.7.0-1ubuntu4
amd64 disk encryption support - shared library
ii libklibc:amd64 2.0.13-4ubuntu0.1
amd64 minimal libc subset for use with initramfs
ii overlayroot 0.48 all
use an overlayfs on top of a read-only root filesystem
```
With noble-proposed:
```
$ schroot-wrapper -c noble -u root -p
initramfs-tools,cloud-initramfs-copymods,cloud-initramfs-rescuevol,cloud-initramfs-dyn-netconf,cloud-initramfs-growroot,cloud-initramfs-rooturl,cloud-initramfs-updateroot,overlayroot,hyperfine,linux-image-6.8.0-41-generic
-e
# hyperfine "update-initramfs -u"
Benchmark 1: update-initramfs -u
Time (mean ± σ): 7.647 s ± 0.277 s [User: 2.631 s, System: 5.502 s]
Range (min … max): 7.139 s … 7.973 s 10 runs
# dpkg -l | grep -E
'(cryptsetup|initramfs|dracut|open-iscsi|lvm2|thin-provisioning-tools|overlayroot)'
ii busybox-initramfs 1:1.36.1-6ubuntu3.1
amd64 Standalone shell setup for initramfs
ii cloud-initramfs-copymods 0.49~24.04.1 all
copy initramfs modules into root filesystem for later use
ii cloud-initramfs-dyn-netconf 0.49~24.04.1 all
write a network interface file in /run for BOOTIF
ii cloud-initramfs-growroot 0.49~24.04.1 all
automatically resize the root partition on first boot
ii cloud-initramfs-rescuevol 0.49~24.04.1 all
boot off a rescue volume rather than root filesystem
ii cloud-initramfs-rooturl 0.49~24.04.1 all
use a tarball or squashfs image in a url as the root filesystem
ii cloud-initramfs-updateroot 0.49~24.04.1 all
extract a tarball over root filesystem before pivot
ii cryptsetup 2:2.7.0-1ubuntu4.1
amd64 disk encryption support - startup scripts
ii cryptsetup-bin 2:2.7.0-1ubuntu4.1
amd64 disk encryption support - command line tools
ii dracut-install 060+5-1ubuntu3.2
amd64 dracut is an event driven initramfs infrastructure (dracut-install)
ii initramfs-tools 0.142ubuntu25.2 all
generic modular initramfs generator (automation)
ii initramfs-tools-bin 0.142ubuntu25.2
amd64 binaries used by initramfs-tools
ii initramfs-tools-core 0.142ubuntu25.2 all
generic modular initramfs generator (core tools)
ii libcryptsetup12:amd64 2:2.7.0-1ubuntu4.1
amd64 disk encryption support - shared library
ii libklibc:amd64 2.0.13-4ubuntu0.1
amd64 minimal libc subset for use with initramfs
ii overlayroot 0.49~24.04.1 all
use an overlayfs on top of a read-only root filesystem
# lsinitramfs /boot/initrd.img > /files
```
The creation time is slightly faster and diffing the content of the
initrds show no difference:
```
diff -u /run/schroot/mount/noble-*/files
```
So verified the SRU successfully.
** Tags removed: verification-needed verification-needed-noble
** Tags added: verification-done verification-done-noble
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https://bugs.launchpad.net/bugs/2065180
Title:
performance regression in dracut-install 060
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