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Groups > linux.debian.kernel > #79084 > unrolled thread
| Started by | Qais Yousef <qyousef@layalina.io> |
|---|---|
| First post | 2023-05-21 00:10 +0200 |
| Last post | 2023-05-31 20:20 +0200 |
| Articles | 3 — 2 participants |
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Enable CONFIG_UCLAMP_TASK by default in debian Qais Yousef <qyousef@layalina.io> - 2023-05-21 00:10 +0200
Re: Enable CONFIG_UCLAMP_TASK by default in debian Salvatore Bonaccorso <carnil@debian.org> - 2023-05-24 10:20 +0200
Re: Enable CONFIG_UCLAMP_TASK by default in debian Qais Yousef <qyousef@layalina.io> - 2023-05-31 20:20 +0200
| From | Qais Yousef <qyousef@layalina.io> |
|---|---|
| Date | 2023-05-21 00:10 +0200 |
| Subject | Enable CONFIG_UCLAMP_TASK by default in debian |
| Message-ID | <GxCVX-aj8t-5@gated-at.bofh.it> |
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. Thanks -- Qais Yousef
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| From | Salvatore Bonaccorso <carnil@debian.org> |
|---|---|
| Date | 2023-05-24 10:20 +0200 |
| Message-ID | <GyRSV-b4rg-1@gated-at.bofh.it> |
| In reply to | #79084 |
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. Regards, Salvatore
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| From | Qais Yousef <qyousef@layalina.io> |
|---|---|
| Date | 2023-05-31 20:20 +0200 |
| Message-ID | <GByAp-cKlp-3@gated-at.bofh.it> |
| In reply to | #79115 |
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
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