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From: Benjamin Segall <bsegall@google.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Turner <pjt@google.com>, linux-kernel@vger.kernel.org,
        Venki Pallipadi <venki@google.com>,
        Srivatsa Vaddagiri <vatsa@in.ibm.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>,
        Mike Galbraith <efault@gmx.de>,
        Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
        Ingo Molnar <mingo@elte.hu>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Morten Rasmussen <Morten.Rasmussen@arm.com>,
        Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Subject: Re: [PATCH 14/16] sched: make __update_entity_runnable_avg() fast
References: <20120628022413.30496.32798.stgit@kitami.mtv.corp.google.com>
	<20120628022415.30496.53532.stgit@kitami.mtv.corp.google.com>
	<1341416463.19870.6.camel@laptop> <1341422408.19870.12.camel@laptop>
Date: Mon, 09 Jul 2012 13:18:29 -0700
In-Reply-To: <1341422408.19870.12.camel@laptop> (Peter Zijlstra's message of
	"Wed, 04 Jul 2012 19:20:08 +0200")
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Correct, the sum is 1..n. The maximum was chosen as 516/46742 because
that is the point when the approximation of loop + fixed point math
being used reaches a maximum, even if the ideal y^n series would cap out
slightly differently.