From: Mike Galbraith <efault@gmx.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] clockevents: Per cpu tick skew boot option
Date: Sun, 06 May 2012 15:10:06 +0200 [thread overview]
Message-ID: <1336309806.7351.19.camel@marge.simpson.net> (raw)
In-Reply-To: <1336309127.7351.13.camel@marge.simpson.net>
On Sun, 2012-05-06 at 14:58 +0200, Mike Galbraith wrote:
> - 0209f649 rcu: limit rcu_node leaf-level fanout
> This patch was born to combat lock contention which testing showed
> to have been _induced by_ skew removal. Skew the tick, contention
> disappeared virtually completely.
P.S. This boot option patch will complement a proposed patch by Paul
McKenney to allow boot time fanout configuration. Between the two,
users will then be able to boot time select the tradeoff they need for
optimal performance of their systems.
-Mike
next prev parent reply other threads:[~2012-05-06 13:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-06 12:58 [PATCH] clockevents: Per cpu tick skew boot option Mike Galbraith
2012-05-06 13:10 ` Mike Galbraith [this message]
2012-05-07 19:17 ` Thomas Gleixner
2012-05-08 3:20 ` Mike Galbraith
2012-05-08 9:44 ` Thomas Gleixner
2012-05-08 10:20 ` Mike Galbraith
2012-05-10 18:16 ` Paul E. McKenney
2012-05-23 15:23 ` [PATCH v3] " Mike Galbraith
2012-05-24 23:52 ` [tip:timers/core] tick: Add " tip-bot for Mike Galbraith
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=1336309806.7351.19.camel@marge.simpson.net \
--to=efault@gmx.de \
--cc=linux-kernel@vger.kernel.org \
--cc=tglx@linutronix.de \
/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