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From: Roman Gushchin <guro@fb.com>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>,
	Rik van Riel <riel@surriel.com>,
	Mel Gorman <mgorman@techsingularity.net>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Valentin Schneider <Valentin.Schneider@arm.com>,
	Will Deacon <will@kernel.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Hao Luo <haoluo@google.com>, Barret Rhoden <brho@google.com>,
	<bpf@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH rfc 0/6] Scheduler BPF
Date: Thu, 16 Sep 2021 09:36:01 -0700	[thread overview]
Message-ID: <YUNycdzO3jRBTlhM@carbon.dhcp.thefacebook.com> (raw)
In-Reply-To: <20210916162451.709260-1-guro@fb.com>

Hello!

I'm sorry, somehow the patchset didn't reach mailing lists and at least
some recepients yesterday (I'm digging into why).

Resending with a fewer people in the cc list, which probably was the reason.

Thanks!

On Thu, Sep 16, 2021 at 09:24:45AM -0700, Roman Gushchin wrote:
> There is a long history of distro people, system administrators, and
> application owners tuning the CFS settings in /proc/sys, which are now
> in debugfs. Looking at what these settings actually did, it ended up
> boiling down to changing the likelihood of task preemption, or
> disabling it by setting the wakeup_granularity_ns to more than half of
> the latency_ns. The other settings didn't really do much for
> performance.
> 

  parent reply	other threads:[~2021-09-16 16:39 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210915213550.3696532-1-guro@fb.com>
2021-09-16  0:19 ` [PATCH rfc 0/6] Scheduler BPF Hao Luo
2021-09-16  1:42   ` Roman Gushchin
2021-09-16 16:24 ` Roman Gushchin
2021-09-16 16:24   ` [PATCH rfc 1/6] bpf: sched: basic infrastructure for scheduler bpf Roman Gushchin
2021-09-16 16:24   ` [PATCH rfc 2/6] bpf: sched: add convenient helpers to identify sched entities Roman Gushchin
2021-11-25  6:09     ` Yafang Shao
2021-11-26 19:50       ` Roman Gushchin
2021-09-16 16:24   ` [PATCH rfc 3/6] bpf: sched: introduce bpf_sched_enable() Roman Gushchin
2021-09-16 16:24   ` [PATCH rfc 4/6] sched: cfs: add bpf hooks to control wakeup and tick preemption Roman Gushchin
2021-10-01  3:35     ` Barry Song
2021-10-02  0:13       ` Roman Gushchin
2021-09-16 16:24   ` [PATCH rfc 5/6] libbpf: add support for scheduler bpf programs Roman Gushchin
2021-09-16 16:24   ` [PATCH rfc 6/6] bpftool: recognize scheduler programs Roman Gushchin
2021-09-16 16:36   ` Roman Gushchin [this message]
2021-10-06 16:39   ` [PATCH rfc 0/6] Scheduler BPF Qais Yousef
2021-10-06 18:50     ` Roman Gushchin
2021-10-11 16:38       ` Qais Yousef
2021-10-11 18:09         ` Roman Gushchin
2021-10-12 10:16           ` Qais Yousef
     [not found]   ` <52EC1E80-4C89-43AD-8A59-8ACA184EAE53@gmail.com>
2021-11-25  6:00     ` Yafang Shao
2021-11-26 19:46       ` Roman Gushchin
2022-01-15  8:29   ` Huichun Feng
2022-01-18 22:54     ` Roman Gushchin
2022-07-19 13:05   ` Ren Zhijie
2022-07-19 13:17   ` Ren Zhijie
2022-07-19 23:21     ` Roman Gushchin
2021-11-20 16:41 Hui-Chun Feng

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