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Date: Tue, 12 Aug 2014 08:41:56 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Dave Hansen <dave.hansen@intel.com>,
        LKML <linux-kernel@vger.kernel.org>, lkp@01.org,
        Ingo Molnar <mingo@kernel.org>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>
Subject: Re: [sched] 143e1e28cb4: +17.9% aim7.jobs-per-min, -9.7%
 hackbench.throughput
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On Tue, Aug 12, 2014 at 09:29:19AM +0530, Preeti U Murthy wrote:
> On 08/11/2014 07:03 PM, Peter Zijlstra wrote:
> >=20
> > Now I think I see why this is; we've reduced load balancing frequency
> > significantly on this machine due to:
>=20
> We have also changed the value of busy_factor to 32 from 64 across all
> domains. This would contribute to increased frequency of load balancing?

Not enough to offset the changes in min/max. Lowering it makes sense
because we've increased min/max for most situations.=20

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