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Wed, 11 Mar 2026 04:23:00 -0700 (PDT) Date: Wed, 11 Mar 2026 11:22:59 +0000 From: Matt Fleming To: Andrea Righi Cc: Tejun Heo , sched-ext@lists.linux.dev, kernel-team@cloudflare.com, void@manifault.com, changwoo@igalia.com, peterz@infradead.org, linux-kernel@vger.kernel.org Subject: Re: sched_ext: Partial mode priority and fallthrough to EEVDF Message-ID: References: <20260310145213.1060649-1-matt@readmodwrite.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Mar 10, 2026 at 07:46:00PM +0100, Andrea Righi wrote: > > I think you can model your scenario using the ext deadline server. For > instance, if you run: > > # echo 500000000 | tee /sys/kernel/debug/sched/ext_server/cpu*/runtime > > This would give sched_ext tasks a guaranteed 50% bandwidth on all CPUs, > (default is 5%), even if there are tasks running at higher sched classes. > > Would this approach work for your needs? It looks like it would, yes. Thanks! I'll start experimenting and report back. Are there any plans to backport this to 6.18 LTS?