From: Tejun Heo <tj@kernel.org>
To: Joel Fernandes <joelagnelf@nvidia.com>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Valentin Schneider <vschneid@redhat.com>,
David Vernet <void@manifault.com>,
Andrea Righi <arighi@nvidia.com>,
Changwoo Min <changwoo@igalia.com>,
bpf@vger.kernel.org
Subject: Re: [PATCH v5 00/14] Add a deadline server for sched_ext tasks
Date: Mon, 23 Jun 2025 12:15:17 -1000 [thread overview]
Message-ID: <aFnR9S6XTy6ww9_o@slm.duckdns.org> (raw)
In-Reply-To: <20250620203234.3349930-1-joelagnelf@nvidia.com>
On Fri, Jun 20, 2025 at 04:32:15PM -0400, Joel Fernandes wrote:
> sched_ext tasks currently are starved by RT hoggers especially since RT
> throttling was replaced by deadline servers to boost only CFS tasks. Several
> users in the community have reported issues with RT stalling sched_ext tasks.
> Add a sched_ext deadline server as well so that sched_ext tasks are also
> boosted and do not suffer starvation.
I left some minor comments and had a question about adding @rf to
->pick_task() but the patchset generally looks great to me otherwise.
Thanks.
--
tejun
prev parent reply other threads:[~2025-06-23 22:15 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 20:32 [PATCH v5 00/14] Add a deadline server for sched_ext tasks Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 01/14] sched/debug: Fix updating of ppos on server write ops Joel Fernandes
2025-06-23 20:14 ` Tejun Heo
2025-06-20 20:32 ` [PATCH v5 02/14] sched/debug: Stop and start server based on if it was active Joel Fernandes
2025-06-23 20:16 ` Tejun Heo
2025-06-30 14:11 ` Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 03/14] sched/deadline: Clear the defer params Joel Fernandes
2025-06-23 20:17 ` Tejun Heo
2025-06-30 14:30 ` Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 04/14] sched/deadline: Prevent setting server as started if params couldn't be applied Joel Fernandes
2025-06-25 12:56 ` Juri Lelli
2025-06-30 14:45 ` Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 05/14] sched/deadline: Return EBUSY if dl_bw_cpus is zero Joel Fernandes
2025-06-23 20:20 ` Tejun Heo
2025-06-30 14:50 ` Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 06/14] sched: Add support to pick functions to take rf Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 07/14] sched: Add a server arg to dl_server_update_idle_time() Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 08/14] sched/ext: Add a DL server for sched_ext tasks Joel Fernandes
2025-06-23 22:11 ` Tejun Heo
2025-06-30 15:12 ` Joel Fernandes
2025-06-30 15:38 ` Tejun Heo
2025-07-01 13:23 ` Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 09/14] sched/debug: Add support to change sched_ext server params Joel Fernandes
2025-06-23 22:12 ` Tejun Heo
2025-06-30 15:26 ` Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 10/14] sched/deadline: Add support to remove DLserver's bandwidth contribution Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 11/14] sched/ext: Relinquish DL server reservations when not needed Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 12/14] selftests/sched_ext: Add test for sched_ext dl_server Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 13/14] sched/deadline: Fix DL server crash in inactive_timer callback Joel Fernandes
2025-06-20 20:32 ` [PATCH v5 14/14] selftests/sched_ext: Add test for DL server total_bw consistency Joel Fernandes
2025-06-20 20:44 ` [PATCH v5 00/14] Add a deadline server for sched_ext tasks Joel Fernandes
2025-06-23 22:15 ` Tejun Heo [this message]
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