On 05/24/23 10:18, Salvatore Bonaccorso wrote: > Package: src:linux > Version: 6.1.27-1 > Severity: wishlist > > Hi > > On Sat, May 20, 2023 at 10:50:02PM +0100, Qais Yousef wrote: > > Hi > > > > Debian kernels don't ship with CONFIG_UCLAMP_TASK and > > CONFIG_UCLAMP_TASK_GROUP > > configs enabled in the kernel, is there any reason for that? > > > > These configs enable smarter performance management for tasks and it'd be > > good > > to know if there's a reason preventing you from enabling it. > > > > Some useful docs: > > > > > > https://kernel.org/doc/html/latest/scheduler/sched-util-clamp.html?highlight=util+clamp > > https://man7.org/linux/man-pages/man1/uclampset.1.html > > > > Happy to contribute patches if that helps. > > I cannot yet judge if it is sensible, as unkown which impact it > otherwise has to enable those, but let's make a tracking bug for your > request.
Sorry for the delayed response. When uclamp is not used, it's protected with a static key in the kernel, so should add no extra overhead when not used; if that's the concern you have. Ubuntu ships with these configs enabled FWIW. Thanks for creating the bug! -- Qais Yousef
