From: Peter Zijlstra <peterz@infradead.org>
To: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>,
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>,
linux-kernel@vger.kernel.org,
Luca Abeni <luca.abeni@santannapisa.it>,
Tommaso Cucinotta <tommaso.cucinotta@santannapisa.it>,
Thomas Gleixner <tglx@linutronix.de>,
Joel Fernandes <joel@joelfernandes.org>,
Vineeth Pillai <vineeth@bitbyteword.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Phil Auld <pauld@redhat.com>,
Suleiman Souhlal <suleiman@google.com>,
Youssef Esmat <youssefesmat@google.com>
Subject: Re: [PATCH V6 3/6] sched/fair: Fair server interface
Date: Fri, 12 Apr 2024 09:43:16 +0200 [thread overview]
Message-ID: <20240412074316.GF30852@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <e4efd69c-b155-4c13-99c3-9603f5769f93@kernel.org>
On Thu, Apr 11, 2024 at 05:02:41PM +0200, Daniel Bristot de Oliveira wrote:
> On 4/11/24 16:43, Peter Zijlstra wrote:
> > The 'defer' thing is dubious though, I don't suppose anybody would ever
> > want to actually change that, other than you while poking around at this
> > code, right?
>
> In a setup where all real-time tasks are DL (without fixed-priority tasks (FIFO/RR))
> the defer = 0 makes more sense because the bandwidth is reserved anyways, and the
> DL server would have a relatively low prio (long period).
Tell me more -- how is it better in that case? I would think it wouldn't
matter much.
next prev parent reply other threads:[~2024-04-12 7:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-05 17:27 [PATCH V6 0/6] SCHED_DEADLINE server infrastructure Daniel Bristot de Oliveira
2024-04-05 17:28 ` [PATCH V6 1/6] sched/fair: Add trivial fair server Daniel Bristot de Oliveira
2024-04-10 17:24 ` Peter Zijlstra
2024-04-11 7:28 ` Daniel Bristot de Oliveira
2024-04-05 17:28 ` [PATCH V6 2/6] sched/deadline: Deferrable dl server Daniel Bristot de Oliveira
2024-04-10 17:47 ` Peter Zijlstra
2024-04-11 7:57 ` Daniel Bristot de Oliveira
2024-05-02 8:35 ` Daniel Bristot de Oliveira
2024-05-02 8:45 ` Peter Zijlstra
2024-04-05 17:28 ` [PATCH V6 3/6] sched/fair: Fair server interface Daniel Bristot de Oliveira
2024-04-11 14:43 ` Peter Zijlstra
2024-04-11 15:02 ` Daniel Bristot de Oliveira
2024-04-12 7:43 ` Peter Zijlstra [this message]
2024-04-12 8:27 ` Daniel Bristot de Oliveira
2024-04-05 17:32 ` [PATCH V6 4/6] sched/core: Fix priority checking for DL server picks Daniel Bristot de Oliveira
2024-04-05 17:33 ` [PATCH V6 5/6] sched/core: Fix picking of tasks for core scheduling with DL server Daniel Bristot de Oliveira
2024-04-05 17:33 ` [PATCH V6 6/6] sched/rt: Remove default bandwidth control Daniel Bristot de Oliveira
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