linux-kernel - Re: Plumbers: Tweaking scheduler policy micro-conf RFP

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Message-ID: <20120515005303.GA9729@linux.vnet.ibm.com>
Date:	Mon, 14 May 2012 17:53:03 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Vincent Guittot <vincent.guittot@...aro.org>
Cc:	smuckle@...cinc.com, khilman@...com, Robin.Randhawa@....com,
	suresh.b.siddha@...el.com, thebigcorporation@...il.com,
	venki@...gle.com, peterz@...radead.org,
	panto@...oniou-consulting.com, mingo@...e.hu, paul.brett@...el.com,
	pdeschrijver@...dia.com, pjt@...gle.com, efault@....de,
	fweisbec@...il.com, geoff@...radead.org, rostedt@...dmis.org,
	tglx@...utronix.de, amit.kucheria@...aro.org,
	linux-kernel@...r.kernel.org, linaro-sched-sig@...ts.linaro.org
Subject: Re: Plumbers: Tweaking scheduler policy micro-conf RFP

On Fri, May 11, 2012 at 06:16:21PM +0200, Vincent Guittot wrote:
> This is a request-for-participation in a micro conference during the
> next Linux Plumber Conference (29-31st Aug).
> It'll require critical mass measured in talk submissions in the
> general area of scheduler and task management.

Hello, Vincent,

I still cannot claim any particular scheduler expertise, but would be
happy to act as moderator, if you would like.

							Thanx, Paul

> If you're working on improving the the scheduler policy used to place
> a task on a CPU to suit your HW, we are inviting your participation
> and request you to submit a proposal to present your problem (e.g.
> power-efficiency) or a solution to solve said problem that should be
> considered by upstream developers.
> 
> We've interacted with the people in To: list before in our quest to
> better understand how the scheduler works and we're hoping you all
> will consider participating in the micro-conf to help guide what kinds
> of ideas are likely to make it upstream.
> 
> If you have ongoing work or ideas in the the following areas we're
> especially interested in hearing from you:
>  1. Consolidation of statistics with other frameworks (cpuidle,
> cpufreq, scheduler all seem to track their own statistics related to
> load, idleness, etc. Can this be converted to a library that is
> useable by all?)
>  2. Replacement for task consolidation on fewer CPUs aka. replacement
> for sched_mc
>  3. Improvement in the placement of activity beside tasks: timer,
> workqueue, IO, interruption
>  4. Instrumentation to calculate the compute capacity available on
> active cores and its utilization by a given workload
> 
> We are thinking of organising the micro-conf as a Q & A session where
> a participant would state a problem and then there would be
> brainstorming on if this is indeed a problem and is so, how to achieve
> a solution. In other words, 20-30 minute slots of each Q & A
> 
> 1. Problem statements with specific examples on why changing the
> default scheduler policy is desired
> 2. For each problem, if it is deemed not possible to accomplish easily
> today, brainstorming on what an acceptable solution would look like
> (frameworks to build upon, interfaces to use, related work in the
> area, key people to involve, etc.)
> 
> Please email us if you will be attending the conference and interested
> in talking about this problem space.
> 
> Regards,
> Amit & Vincent
> 

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