Arch, 5.18.7 $ zgrep -E '^CONFIG\w*_HZ' /proc/config.gz CONFIG_NO_HZ_COMMON=y CONFIG_NO_HZ_IDLE=y CONFIG_NO_HZ=y CONFIG_HZ_300=y CONFIG_HZ=300 It'

Arch, 5.18.7 $ zgrep -E '^CONFIG\w*_HZ' /proc/config.gz CONFIG_NO_HZ_COMMON=y CONFIG_NO_HZ_IDLE=y CONFIG_NO_HZ=y CONFIG_HZ_300=y CONFIG_HZ=300 It's been that way for years, I remember seeing that since at least 2015. LWN seems to confirm that feeling: https://lwn.net/Articles/549580/ https://lwn.net/Articles/549580/ > In 3.10, the CONFIG_NO_HZ option has been replaced by a three-way choice: > CONFIG_NO_HZ_IDLE (the default setting) … https://en.wikipedia.org/wiki/Linux_kernel_version_history https://en.wikipedia.org/wiki/Linux_kernel_version_history 3.10 30 June 2013