From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
smuckle@quicinc.com, khilman@ti.com, Robin.Randhawa@arm.com,
suresh.b.siddha@intel.com, thebigcorporation@gmail.com,
venki@google.com, panto@antoniou-consulting.com, mingo@elte.hu,
paul.brett@intel.com, pdeschrijver@nvidia.com, pjt@google.com,
efault@gmx.de, fweisbec@gmail.com, geoff@infradead.org,
rostedt@goodmis.org, tglx@linutronix.de,
amit.kucheria@linaro.org,
linux-kernel <linux-kernel@vger.kernel.org>,
linaro-sched-sig@lists.linaro.org,
Morten Rasmussen <Morten.Rasmussen@arm.com>,
Juri Lelli <juri.lelli@gmail.com>
Subject: Re: Plumbers: Tweaking scheduler policy micro-conf RFP
Date: Tue, 15 May 2012 08:19:58 -0700 [thread overview]
Message-ID: <20120515151958.GD2461@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAKfTPtDrZ-tfC81jnxwpB+DCtmxhU+VfoYbtSBr8MkFt+P8JcA@mail.gmail.com>
On Tue, May 15, 2012 at 05:05:47PM +0200, Vincent Guittot wrote:
> On 15 May 2012 15:00, Peter Zijlstra <peterz@infradead.org> wrote:
> > On Tue, 2012-05-15 at 14:57 +0200, Vincent Guittot wrote:
> >>
> >> Not sure that nobody cares but it's much more that scheduler,
> >> load_balance and sched_mc are sensible enough that it's difficult to
> >> ensure that a modification will not break everything for someone
> >> else.
> >
> > Thing is, its already broken, there's nothing else to break :-)
>
> sched_mc is the only power-aware knob in the current scheduler. It's
> far from being perfect but it seems to work on some ARM platform at
> least. You mentioned at the scheduler mini-summit that we need a
> cleaner replacement and everybody has agreed on that point. Is anybody
> working on it yet ? and can we discuss at Plumber's what this
> replacement would look like ?
Hello, Vincent,
If I understand the patch from a first glance, Peter is doing what
everyone agreed to at the scheduler minisummit back in February.
>From the notes from that meeting at:
https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/HMPscheduling
See the line reading "Remove sched_mc. [Peter Zijlstra]".
Or am I confused about what Peter's patch does?
Thanx, Paul
next prev parent reply other threads:[~2012-05-15 15:20 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-11 16:16 Plumbers: Tweaking scheduler policy micro-conf RFP Vincent Guittot
2012-05-11 16:26 ` Steven Rostedt
2012-05-11 16:38 ` Vincent Guittot
2012-05-15 8:41 ` Juri Lelli
2012-05-15 0:53 ` Paul E. McKenney
2012-05-15 8:02 ` Vincent Guittot
2012-05-15 8:34 ` mou Chen
2012-05-15 9:07 ` Vincent Guittot
2012-05-15 9:17 ` Pantelis Antoniou
2012-05-15 10:28 ` Peter Zijlstra
2012-05-15 11:35 ` Pantelis Antoniou
2012-05-15 11:58 ` Peter Zijlstra
2012-05-15 12:32 ` Pantelis Antoniou
2012-05-15 12:59 ` Peter Zijlstra
2012-05-19 14:58 ` Luming Yu
2012-05-15 20:26 ` valdis.kletnieks
2012-05-15 20:33 ` Peter Zijlstra
2012-05-16 12:08 ` Pantelis Antoniou
2012-05-15 12:23 ` Peter Zijlstra
2012-05-15 12:27 ` Peter Zijlstra
2012-05-15 12:57 ` Vincent Guittot
2012-05-15 13:00 ` Peter Zijlstra
2012-05-15 15:05 ` Vincent Guittot
2012-05-15 15:19 ` Paul E. McKenney [this message]
2012-05-15 15:27 ` Vincent Guittot
2012-05-15 15:35 ` Peter Zijlstra
2012-05-15 15:45 ` Peter Zijlstra
2012-05-16 18:30 ` Peter Zijlstra
2012-05-19 17:08 ` Linus Torvalds
2012-05-19 22:55 ` Peter Zijlstra
2012-05-22 2:38 ` Chen
2012-05-22 5:14 ` Chen
2012-05-30 7:20 ` Ingo Molnar
2012-05-23 15:03 ` Ingo Molnar
2012-05-23 15:43 ` Joe Perches
2012-05-23 15:50 ` Ingo Molnar
2012-05-23 15:56 ` Joe Perches
2012-05-23 15:59 ` Ingo Molnar
2012-05-29 18:17 ` [PATCH] printk: Shrink printk_sched buffer size, eliminate it when !CONFIG_PRINTK Joe Perches
2012-06-05 16:04 ` Joe Perches
2012-06-06 7:25 ` Ingo Molnar
2012-06-06 7:33 ` Ingo Molnar
2012-06-06 7:42 ` Joe Perches
2012-05-19 23:13 ` Plumbers: Tweaking scheduler policy micro-conf RFP Peter Zijlstra
2012-05-19 23:22 ` Peter Zijlstra
2012-05-21 7:16 ` Ingo Molnar
2012-05-21 16:56 ` Linus Torvalds
2012-05-16 18:49 ` Vaidyanathan Srinivasan
2012-05-16 19:40 ` Peter Zijlstra
2012-05-16 21:20 ` Vincent Guittot
[not found] ` <20120518161817.GE18312@e103034-lin.cambridge.arm.com>
2012-05-18 16:24 ` Morten Rasmussen
2012-05-18 16:39 ` Peter Zijlstra
2012-05-18 16:46 ` Pantelis Antoniou
2012-05-15 16:30 ` Vaidyanathan Srinivasan
2012-05-15 18:13 ` Vincent Guittot
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