From: Peter Zijlstra <peterz@infradead.org>
To: svaidy@linux.vnet.ibm.com
Cc: Vincent Guittot <vincent.guittot@linaro.org>,
paulmck@linux.vnet.ibm.com, 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: Wed, 16 May 2012 21:40:42 +0200 [thread overview]
Message-ID: <1337197242.4281.6.camel@twins> (raw)
In-Reply-To: <20120516184956.GA23058@dirshya.in.ibm.com>
On Thu, 2012-05-17 at 00:19 +0530, Vaidyanathan Srinivasan wrote:
> Let me take a case of two-socket,quad-core,HT x86 (Nehalem):
>
> SDTL_SHARE_POWERLINE should be passed along with a cpumask that
> represents sd_init_CPU or cpu_cpu_mask today. So the number of
> domains we build per-cpu will depend on the topology and the
> sched_powersavings settings.
No, the topology should at all time be independent of powersavings,
current x86's topology depending on that is one of the biggest warts
ever. Also sched_powersavings, doesn't actually exist anymore.
The NHM-EP from your example should do just two levels since mc and cpu
are identical, I guess we could add a pass that merges identical masks
so you can still specify 3 levels if you want.
The NUMA stuff is done automatically based on SLIT, so you don't need to
go above the socket level.
next prev parent reply other threads:[~2012-05-16 19:41 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
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 [this message]
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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