From: valdis.kletnieks@vt.edu
To: Pantelis Antoniou <pantelis.antoniou@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Vincent Guittot <vincent.guittot@linaro.org>,
mou Chen <hi3766691@gmail.com>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
torvalds@linux-foundation.org
Subject: Re: Plumbers: Tweaking scheduler policy micro-conf RFP
Date: Tue, 15 May 2012 16:26:22 -0400 [thread overview]
Message-ID: <54348.1337113582@turing-police.cc.vt.edu> (raw)
In-Reply-To: Your message of "Tue, 15 May 2012 14:35:53 +0300." <9093E8BA-80E4-4113-B036-0259E5FB44F1@gmail.com>
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On Tue, 15 May 2012 14:35:53 +0300, Pantelis Antoniou said:
> Thermal management: How to distribute load to the processors in such
> a way that the temperature of the die doesn't increase too much that
> we have to either go to a lower OPP or shut down the core all-together.
> This is in direct conflict with throughput since we'd have better performance
> if we could keep the same warmed-up cpu going.
It's not just "temperature of the die". When you have multiple aisles of 42U
racks full of servers, you often hit "must keep average total BTU load per
server below X" constraints. There's plenty of colo's that are only using 40%
of their floor space due to cooling constraints (you may be able to get the
power company to pull another megawatt of copper into the building, but then
you need to find someplace to put another megawatt worth of cooling).
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next prev parent reply other threads:[~2012-05-15 20:26 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-11 16:16 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 [this message]
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
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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