mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Suresh Siddha <suresh.b.siddha@intel.com>
To: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
	mingo@kernel.org, pjt@google.com, efault@gmx.de,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 1/5] sched, fair: Let minimally loaded cpu balance the group
Date: Thu, 03 May 2012 17:05:45 -0700	[thread overview]
Message-ID: <1336089945.28674.460.camel@sbsiddha-desk.sc.intel.com> (raw)
In-Reply-To: <20120502103453.GB22740@linux.vnet.ibm.com>

On Wed, 2012-05-02 at 16:04 +0530, Srivatsa Vaddagiri wrote:
> * Peter Zijlstra <a.p.zijlstra@chello.nl> [2012-05-02 12:31:30]:
> 
> > > IOW :
> > > 
> > > 		balance_load = 0 iff idle_cpu(i) ??
> > 
> > I think so, even for !0 load_idx, load will only reach zero when we're
> > idle, just takes longer.
> 
> Right ...so should we force it to select a idle_cpu by having
> balance_load = 0 for a idle cpu (ignoring what target_load(i, load_idx)
> told us as its load?

I think Peter is trying to find the leastly loaded among idle cpu's (in
other words the longest idle cpu ;)

should be ok, isn't it?

thanks,
suresh




  reply	other threads:[~2012-05-04  0:02 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-01 18:14 [RFC][PATCH 0/5] various sched and numa bits Peter Zijlstra
2012-05-01 18:14 ` [RFC][PATCH 1/5] sched, fair: Let minimally loaded cpu balance the group Peter Zijlstra
2012-05-02 10:25   ` Srivatsa Vaddagiri
2012-05-02 10:31     ` Peter Zijlstra
2012-05-02 10:34       ` Srivatsa Vaddagiri
2012-05-04  0:05         ` Suresh Siddha [this message]
2012-05-04 16:09           ` Peter Zijlstra
2012-05-01 18:14 ` [RFC][PATCH 2/5] sched, fair: Add some serialization to the sched_domain load-balance walk Peter Zijlstra
2012-05-01 18:14 ` [RFC][PATCH 3/5] x86: Allow specifying node_distance() for numa=fake Peter Zijlstra
2012-05-01 18:14 ` [RFC][PATCH 4/5] x86: Hard partition cpu topology masks on node boundaries Peter Zijlstra

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=1336089945.28674.460.camel@sbsiddha-desk.sc.intel.com \
    --to=suresh.b.siddha@intel.com \
    --cc=a.p.zijlstra@chello.nl \
    --cc=efault@gmx.de \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@kernel.org \
    --cc=pjt@google.com \
    --cc=vatsa@linux.vnet.ibm.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®