I use the CPU optimized kernel linux-ck-ivybridge on Arch Linux using the repository below, however for unknown reasons pacman has stopped upgrading the kernel since July 2021.
It is also not listed by pacman anymore. Have they stopped offering CPU optimized kernels?
~$ sudo pacman -Syyu
[sudo] password for konrad:
:: Synchronizing package databases...
core 154.6 KiB 429 KiB/s 00:00 [########################################] 100%
extra 1715.0 KiB 2.50 MiB/s 00:01 [########################################] 100%
community 6.5 MiB 2.78 MiB/s 00:02 [########################################] 100%
repo-ck 3.8 KiB 16.6 KiB/s 00:00 [########################################] 100%
:: Starting full system upgrade...
there is nothing to do
~$ pacman -Ss linux-ck-ivybridge
~$ pacman -Ss linux-ck
repo-ck/linux-ck 5.16.14-1 (ck-generic)
The Linux-ck kernel and modules with ck's hrtimer patches
repo-ck/linux-ck-generic-v2 5.16.14-1 (ck-generic-v2)
The Linux-ck-generic-v2 kernel and modules with ck's hrtimer patches
repo-ck/linux-ck-generic-v2-headers 5.16.14-1 (ck-generic-v2)
Headers and scripts for building modules for Linux-ck-generic-v2 kernel
repo-ck/linux-ck-generic-v3 5.16.14-1 (ck-generic-v3)
The Linux-ck-generic-v3 kernel and modules with ck's hrtimer patches
repo-ck/linux-ck-generic-v3-headers 5.16.14-1 (ck-generic-v3)
Headers and scripts for building modules for Linux-ck-generic-v3 kernel
repo-ck/linux-ck-generic-v4 5.16.14-1 (ck-generic-v4)
The Linux-ck-generic-v4 kernel and modules with ck's hrtimer patches
repo-ck/linux-ck-generic-v4-headers 5.16.14-1 (ck-generic-v4)
Headers and scripts for building modules for Linux-ck-generic-v4 kernel
repo-ck/linux-ck-headers 5.16.14-1 (ck-generic)
Headers and scripts for building modules for Linux-ck kernel
/etc/pacman.conf
[...]
[repo-ck]
Server = https://mirror.lesviallon.fr/$repo/os/$arch
Server = http://repo-ck.com/$arch