• Bug#1102639: linux: Please enable CONFIG_SCHED_CLASS_EXT=y

    From Lina Bhaile@21:1/5 to All on Fri Apr 11 13:20:01 2025
    XPost: linux.debian.kernel

    Source: linux
    Version: 6.12.21-1
    Severity: wishlist
    Tags: newcomer
    X-Debbugs-Cc: debbugs@linabee.uk

    Dear Maintainer,

    Please consider enabling CONFIG_SCHED_CLASS_EXT=y in trixie kernels. As far as I can tell, the sched_ext framework is advanced enough in 6.12 that it will work okay for external schedulers provided outside of Debian (i.e cargo install scx_lavd).

    In my experience, scx_lavd as an example, provides a noticeable, albeit anecdotal, improvement to energy usage, battery life and responsiveness.

    -- System Information:
    Debian Release: trixie/sid
    APT prefers testing
    APT policy: (500, 'testing')
    Architecture: amd64 (x86_64)

    Kernel: Linux 6.12.21-amd64 (SMP w/12 CPU threads; PREEMPT)
    Kernel taint flags: TAINT_WARN
    Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
    Shell: /bin/sh linked to /usr/bin/dash
    Init: systemd (via /run/systemd/system)
    LSM: AppArmor: enabled

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  • From Salvatore Bonaccorso@21:1/5 to Lina Bhaile on Fri Apr 11 18:10:02 2025
    XPost: linux.debian.kernel

    Control: tags -1 - newcomer
    Control: forwarded -1 https://salsa.debian.org/kernel-team/linux/-/merge_requests/1338

    On Fri, Apr 11, 2025 at 11:57:01AM +0100, Lina Bhaile wrote:
    Source: linux
    Version: 6.12.21-1
    Severity: wishlist
    Tags: newcomer
    X-Debbugs-Cc: debbugs@linabee.uk

    Dear Maintainer,

    Please consider enabling CONFIG_SCHED_CLASS_EXT=y in trixie kernels.
    As far as I can tell, the sched_ext framework is advanced enough in
    6.12 that it will work okay for external schedulers provided outside
    of Debian (i.e cargo install scx_lavd).

    In my experience, scx_lavd as an example, provides a noticeable,
    albeit anecdotal, improvement to energy usage, battery life and responsiveness.

    This is beeing discussed in https://salsa.debian.org/kernel-team/linux/-/merge_requests/1338

    Regards,
    Salvatore

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