From: Arjan van de Ven <arjan@linux.intel.com>
To: paulmck@linux.vnet.ibm.com
Cc: Steven Rostedt <rostedt@goodmis.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Rob Landley <rob@landley.net>,
linux-kernel@vger.kernel.org, josh@joshtriplett.org,
zhong@linux.vnet.ibm.com, khilman@linaro.org,
geoff@infradead.org, tglx@linutronix.de
Subject: Re: [PATCH] nohz1: Documentation
Date: Thu, 21 Mar 2013 10:41:30 -0700 [thread overview]
Message-ID: <514B464A.50700@linux.intel.com> (raw)
In-Reply-To: <20130321171806.GX3637@linux.vnet.ibm.com>
On 3/21/2013 10:18 AM, Paul E. McKenney wrote:
> o Use the "idle=poll" boot parameter. However, please note
> that use of this parameter can cause your CPU to overheat,
> which may cause thermal throttling to degrade your
> latencies --and that this degradation can be even worse
> than that of dyntick-idle.
it also disables (effectively) Turbo Mode on Intel cpus... which can cost you a serious percentage of performance
next prev parent reply other threads:[~2013-03-21 17:41 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-18 16:29 [PATCH] nohz1: Documentation Paul E. McKenney
2013-03-18 18:13 ` Rob Landley
2013-03-18 18:46 ` Frederic Weisbecker
2013-03-18 19:59 ` Rob Landley
2013-03-18 20:48 ` Frederic Weisbecker
2013-03-18 22:25 ` Paul E. McKenney
2013-03-20 23:32 ` Steven Rostedt
2013-03-20 23:55 ` Paul E. McKenney
2013-03-21 0:27 ` Steven Rostedt
2013-03-21 2:22 ` Paul E. McKenney
2013-03-21 10:16 ` Borislav Petkov
2013-03-21 15:18 ` Paul E. McKenney
2013-03-21 16:00 ` Borislav Petkov
2013-03-21 15:45 ` Arjan van de Ven
2013-03-21 17:18 ` Paul E. McKenney
2013-03-21 17:41 ` Arjan van de Ven [this message]
2013-03-21 18:02 ` Paul E. McKenney
2013-03-22 18:37 ` Kevin Hilman
2013-03-22 19:25 ` Paul E. McKenney
2013-03-22 4:59 ` Rob Landley
2013-03-21 18:01 ` Frederic Weisbecker
2013-03-21 18:26 ` Paul E. McKenney
2013-03-21 16:08 ` Christoph Lameter
2013-03-21 17:15 ` Paul E. McKenney
2013-03-21 18:39 ` Christoph Lameter
2013-03-21 18:58 ` Paul E. McKenney
2013-03-21 20:04 ` Christoph Lameter
2013-03-21 20:42 ` Frederic Weisbecker
2013-03-21 21:02 ` Christoph Lameter
2013-03-21 21:06 ` Frederic Weisbecker
2013-03-21 20:50 ` Paul E. McKenney
2013-03-22 14:38 ` Christoph Lameter
2013-03-22 16:28 ` Paul E. McKenney
2013-03-25 14:31 ` Christoph Lameter
2013-03-25 14:37 ` Frederic Weisbecker
2013-03-25 15:18 ` Christoph Lameter
2013-03-25 15:20 ` Frederic Weisbecker
2013-03-22 9:52 ` Mats Liljegren
2013-03-22 19:01 ` Kevin Hilman
2013-03-21 18:44 ` Steven Rostedt
2013-03-21 18:53 ` Christoph Lameter
2013-03-21 19:16 ` Steven Rostedt
2013-03-21 18:59 ` Paul E. McKenney
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