From: Steven Rostedt <rostedt@goodmis.org>
To: Joel Fernandes <joel@joelfernandes.org>
Cc: Daniel Bristot de Oliveira <bristot@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>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
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>,
Vineeth Pillai <vineeth@bitbyteword.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Phil Auld <pauld@redhat.com>
Subject: Re: [PATCH v5 6/7] sched/deadline: Deferrable dl server
Date: Tue, 7 Nov 2023 14:32:16 -0500 [thread overview]
Message-ID: <20231107143216.170ca582@gandalf.local.home> (raw)
In-Reply-To: <20231107125434.284c44da@gandalf.local.home>
Just got this too (with the 20% we talked about on IRC).
migrate-991 6..... 713.996237: print: tracing_mark_write: thread 7 iter 3 sleeping
The above is 991 in userspace writing to trace_marker
migrate-991 6d..2. 713.996251: bprint: __schedule: Pick userspin:973:120
I added the above printk in the core pick_next_task().
migrate-991 6d..2. 713.996254: sched_switch: migrate:991 [90] S ==> userspin:973 [120]
We switch to userspin for just 16 microseconds, and notice, NEED_RESCHED is
not set.
userspin-973 6dN.2. 713.996270: bprint: pick_task_rt: Pick RT migrate:988:93
The above printk is in pick_next_task_rt(), and NEED_RESCHED is now set!
userspin-973 6dN.2. 713.996271: bprint: __schedule: Pick migrate:988:93
userspin-973 6d..2. 713.996272: sched_switch: userspin:973 [120] R ==> migrate:988 [93]
I'll add your latest patch and see if that's different.
I'll also test this without any of the patches first.
-- Steve
next prev parent reply other threads:[~2023-11-07 19:32 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-04 10:59 [PATCH v5 0/7] SCHED_DEADLINE server infrastructure Daniel Bristot de Oliveira
2023-11-04 10:59 ` [PATCH v5 1/7] sched: Unify runtime accounting across classes Daniel Bristot de Oliveira
2023-11-15 9:04 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2023-11-04 10:59 ` [PATCH v5 2/7] sched/deadline: Collect sched_dl_entity initialization Daniel Bristot de Oliveira
2023-11-15 9:04 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2023-11-04 10:59 ` [PATCH v5 3/7] sched/deadline: Move bandwidth accounting into {en,de}queue_dl_entity Daniel Bristot de Oliveira
2023-11-15 9:04 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2023-11-04 10:59 ` [PATCH v5 4/7] sched/deadline: Introduce deadline servers Daniel Bristot de Oliveira
2023-11-15 9:04 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2023-11-04 10:59 ` [PATCH v5 5/7] sched/fair: Add trivial fair server Daniel Bristot de Oliveira
2023-11-06 14:24 ` Peter Zijlstra
2023-11-06 14:26 ` Daniel Bristot de Oliveira
2023-11-04 10:59 ` [PATCH v5 6/7] sched/deadline: Deferrable dl server Daniel Bristot de Oliveira
2023-11-06 14:55 ` Peter Zijlstra
2023-11-06 17:05 ` Daniel Bristot de Oliveira
2023-11-06 19:32 ` Joel Fernandes
2023-11-06 21:32 ` Joel Fernandes
2023-11-06 21:37 ` Joel Fernandes
2023-11-07 11:58 ` Daniel Bristot de Oliveira
2023-11-08 2:42 ` Joel Fernandes
2023-11-07 16:47 ` Steven Rostedt
2023-11-07 17:35 ` Steven Rostedt
2023-11-07 17:46 ` Steven Rostedt
2023-11-07 17:54 ` Steven Rostedt
2023-11-07 19:32 ` Steven Rostedt [this message]
2023-11-07 20:07 ` Steven Rostedt
2023-11-07 17:37 ` Daniel Bristot de Oliveira
2023-11-07 18:50 ` Daniel Bristot de Oliveira
2023-11-08 3:20 ` Joel Fernandes
2023-11-08 8:01 ` Daniel Bristot de Oliveira
2023-11-08 18:25 ` Joel Fernandes
2023-11-08 12:44 ` Peter Zijlstra
2023-11-08 12:50 ` Peter Zijlstra
2023-11-08 14:52 ` Daniel Bristot de Oliveira
2023-11-08 13:46 ` Daniel Bristot de Oliveira
2023-11-08 13:58 ` Daniel Bristot de Oliveira
2023-11-08 15:14 ` Juri Lelli
2023-11-08 16:57 ` Peter Zijlstra
2023-11-08 2:37 ` Joel Fernandes
2023-11-07 7:30 ` Daniel Bristot de Oliveira
2023-11-07 16:37 ` Steven Rostedt
2023-11-13 15:05 ` kernel test robot
2024-03-20 0:03 ` Joel Fernandes
2024-03-20 19:24 ` Daniel Bristot de Oliveira
2024-03-21 16:15 ` Joel Fernandes
2024-03-23 14:37 ` Joel Fernandes
2024-04-05 14:35 ` Daniel Bristot de Oliveira
2024-04-08 17:11 ` Steven Rostedt
2023-11-04 10:59 ` [PATCH v5 7/7] sched/fair: Fair server interface Daniel Bristot de Oliveira
2023-11-04 15:18 ` kernel test robot
2023-11-05 0:55 ` kernel test robot
2023-11-06 15:40 ` Peter Zijlstra
2023-11-06 16:29 ` Daniel Bristot de Oliveira
2023-11-07 8:16 ` Peter Zijlstra
2023-11-07 14:06 ` Daniel Bristot de Oliveira
2023-11-07 14:44 ` Peter Zijlstra
2023-11-07 12:38 ` Peter Zijlstra
2023-11-07 13:24 ` Daniel Bristot de Oliveira
2024-01-19 1:49 ` Joel Fernandes
2024-01-19 1:55 ` Joel Fernandes
2024-01-22 14:14 ` Daniel Bristot de Oliveira
2024-01-23 15:39 ` Joel Fernandes
2024-01-23 15:44 ` Joel Fernandes
2024-02-13 2:13 ` Joel Fernandes
2024-02-13 2:21 ` Joel Fernandes
2024-02-14 14:23 ` Daniel Bristot de Oliveira
2024-02-15 13:57 ` Joel Fernandes
2024-02-15 17:27 ` Daniel Bristot de Oliveira
2024-02-15 17:41 ` Joel Fernandes
2024-04-04 17:43 ` Daniel Bristot de Oliveira
2023-12-08 21:47 ` [PATCH v5 0/7] SCHED_DEADLINE server infrastructure Joel Fernandes
2024-02-19 7:33 ` Huang, Ying
2024-02-19 10:23 ` Daniel Bristot de Oliveira
2024-02-20 3:28 ` Huang, Ying
2024-02-20 8:31 ` Daniel Bristot de Oliveira
2024-02-20 8:41 ` Huang, Ying
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