All of lore.kernel.org
 help / color / mirror / Atom feed
From: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
To: Youquan Song <youquan.song@intel.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de,
	hpa@zytor.com, akpm@linux-foundation.org, stable@vger.kernel.org,
	arjan@linux.intel.com, len.brown@intel.com, anhua.xu@intel.com,
	chaohong.guo@intel.com,
	Youquan Song <youquan.song@linux.intel.com>
Subject: Re: [PATCH] x86,sched: Fix sched_smt_power_savings totally broken
Date: Tue, 10 Jan 2012 22:21:29 +0530	[thread overview]
Message-ID: <20120110165129.GC17432@dirshya.in.ibm.com> (raw)
In-Reply-To: <20120110165426.GA20681@linux-youquan.bj.intel.com>

* Youquan Song <youquan.song@intel.com> [2012-01-10 11:54:26]:

> 
> > Youquan, As far as I know both the
> > sched_smt_power_savings/sched_mc_power_savings are broken for atleast an
> > year.
> > 
> > Have you checked the state of 'sched_mc_power_savings' to see if it is
> > working or gets addressed with your proposed patches?
> Thanks Suresh!
> 
> We have verified that sched_mc_power_savings works well in mainline and
> -tip tree, only sched_smt_power_savings broken.

Hi Suresh,

My testing also shows that sched_mc works find and only sched_smt
suffers from the group capacity problem at the core level.

--Vaidy


  reply	other threads:[~2012-01-10 16:51 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-09  8:56 [PATCH] x86,sched: Fix sched_smt_power_savings totally broken Youquan Song
2012-01-09 10:06 ` Peter Zijlstra
2012-01-09 10:28   ` Peter Zijlstra
2012-01-09 10:30     ` Peter Zijlstra
2012-01-09 11:00     ` Vaidyanathan Srinivasan
2012-01-09 14:35       ` Peter Zijlstra
2012-01-09 16:03         ` Vaidyanathan Srinivasan
2012-01-09 16:13           ` Peter Zijlstra
2012-01-09 17:05             ` Vaidyanathan Srinivasan
2012-01-09 14:13     ` Arjan van de Ven
2012-05-18 10:19     ` [tip:sched/core] sched: Remove stale power aware scheduling remnants and dysfunctional knobs tip-bot for Peter Zijlstra
2012-01-10  0:14   ` [PATCH] x86,sched: Fix sched_smt_power_savings totally broken Youquan Song
2012-01-09 11:05     ` Peter Zijlstra
2012-01-10  5:58       ` Youquan Song
2012-01-09 23:52         ` Suresh Siddha
2012-01-10  9:18           ` Ingo Molnar
2012-01-10 14:32             ` Arjan van de Ven
2012-01-10 14:41               ` Peter Zijlstra
2012-01-10 14:54                 ` Arjan van de Ven
2012-01-10 15:32               ` Vincent Guittot
2012-01-10 15:32                 ` Vincent Guittot
2012-01-10 16:49               ` Vaidyanathan Srinivasan
2012-01-10 19:41               ` Ingo Molnar
2012-01-10 19:44                 ` Ingo Molnar
2012-01-10 16:54           ` Youquan Song
2012-01-10 16:51             ` Vaidyanathan Srinivasan [this message]
2012-01-10 19:01               ` Suresh Siddha
2012-01-11  3:52                 ` Vaidyanathan Srinivasan
2012-01-11 17:37                   ` Youquan Song
2012-01-10 16:44       ` Vaidyanathan Srinivasan
2012-01-09 11:12     ` Peter Zijlstra
2012-01-09 14:29       ` Vincent Guittot
2012-01-09 14:29         ` Vincent Guittot
2012-01-09 14:46         ` Peter Zijlstra
2012-01-10  2:12           ` Indan Zupancic
2012-01-10  9:26             ` Peter Zijlstra
2012-01-10  1:54         ` Suresh Siddha
2012-01-10  8:08           ` Vincent Guittot
2012-01-09 15:37 ` Greg KH

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20120110165129.GC17432@dirshya.in.ibm.com \
    --to=svaidy@linux.vnet.ibm.com \
    --cc=a.p.zijlstra@chello.nl \
    --cc=akpm@linux-foundation.org \
    --cc=anhua.xu@intel.com \
    --cc=arjan@linux.intel.com \
    --cc=chaohong.guo@intel.com \
    --cc=hpa@zytor.com \
    --cc=len.brown@intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --cc=stable@vger.kernel.org \
    --cc=suresh.b.siddha@intel.com \
    --cc=tglx@linutronix.de \
    --cc=youquan.song@intel.com \
    --cc=youquan.song@linux.intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.