public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Peter Zijlstra <peterz@infradead.org>
To: subhra mazumdar <subhra.mazumdar@oracle.com>
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com,
	steven.sistare@oracle.com, dhaval.giani@oracle.com
Subject: Re: [RESEND RFC PATCH V3] sched: Improve scalability of select_idle_sibling using SMT balance
Date: Thu, 1 Feb 2018 14:33:44 +0100	[thread overview]
Message-ID: <20180201133343.GJ2295@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20180201123335.GV2249@hirez.programming.kicks-ass.net>

On Thu, Feb 01, 2018 at 01:33:35PM +0100, Peter Zijlstra wrote:
> I think you want to go allocate sched_domain_shared for the MC level and
> use that, much like sd_llc_shared.

Also, you'd want to try and get performance numbers for something like
Power8, which has SMT8 and fairly expensive atomic ops.

  reply	other threads:[~2018-02-01 13:33 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-29 23:31 [RESEND RFC PATCH V3] sched: Improve scalability of select_idle_sibling using SMT balance subhra mazumdar
2018-02-01 12:33 ` Peter Zijlstra
2018-02-01 13:33   ` Peter Zijlstra [this message]
2018-02-02 16:53   ` Steven Sistare
2018-02-02 17:17     ` Peter Zijlstra
2018-02-02 17:36       ` Steven Sistare
2018-02-02 19:58         ` Peter Zijlstra
2018-02-02 20:51           ` Steven Sistare
2018-02-02 17:37       ` Subhra Mazumdar
2018-02-05 12:19         ` Peter Zijlstra
2018-02-05 22:09           ` Subhra Mazumdar
2018-02-06  9:12             ` Peter Zijlstra
2018-02-07  0:30               ` Subhra Mazumdar
2018-02-07  8:42                 ` Peter Zijlstra
2018-02-07 23:10                   ` Subhra Mazumdar
2018-02-02 17:21     ` Peter Zijlstra
2018-02-02 17:39       ` Steven Sistare
2018-02-02 18:34         ` Steven Sistare
2018-02-02 20:04           ` Peter Zijlstra
2018-02-02 21:17             ` Steven Sistare
2018-02-03  3:47           ` Mike Galbraith
2018-02-02 19:59     ` Peter Zijlstra
2018-02-02 21:06       ` Steven Sistare
2018-02-05 12:48         ` Peter Zijlstra
2018-02-05 13:54           ` Mike Galbraith
2018-02-05 17:03           ` Peter Zijlstra
2018-02-05 22:32             ` Subhra Mazumdar

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=20180201133343.GJ2295@hirez.programming.kicks-ass.net \
    --to=peterz@infradead.org \
    --cc=dhaval.giani@oracle.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=steven.sistare@oracle.com \
    --cc=subhra.mazumdar@oracle.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