Message-ID: <514B464A.50700@linux.intel.com>
Date: Thu, 21 Mar 2013 10:41:30 -0700
From: Arjan van de Ven <arjan@linux.intel.com>
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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
References: <CAFTL4hybMf+9GjjyKRSEEp0x+wT7OwpKShE5sR_JqW24DGfKOw@mail.gmail.com> <1363636794.15703.32@driftwood> <CAFTL4hz=VKCchgvKcSHbctZcRyjCSmCbLu6OhLz0zEcYA20zOQ@mail.gmail.com> <20130318222548.GG3656@linux.vnet.ibm.com> <1363822338.6345.33.camel@gandalf.local.home> <20130320235545.GL3637@linux.vnet.ibm.com> <1363825631.6345.45.camel@gandalf.local.home> <514B2B03.4030301@linux.intel.com> <20130321171806.GX3637@linux.vnet.ibm.com>
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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
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