Message-ID: <1367310625.4616.71.camel@marge.simpson.net>
Subject: Re: [patch v7 0/21] sched: power aware scheduling
From: Mike Galbraith <bitbucket@online.de>
To: Len Brown <lenb@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>, Alex Shi <alex.shi@intel.com>,
        mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de,
        akpm@linux-foundation.org, arjan@linux.intel.com, pjt@google.com,
        namhyung@kernel.org, morten.rasmussen@arm.com,
        vincent.guittot@linaro.org, gregkh@linuxfoundation.org,
        preeti@linux.vnet.ibm.com, viresh.kumar@linaro.org,
        linux-kernel@vger.kernel.org, len.brown@intel.com,
        rafael.j.wysocki@intel.com, jkosina@suse.cz, clark.williams@gmail.com,
        tony.luck@intel.com, keescook@chromium.org, mgorman@suse.de,
        riel@redhat.com, Linux PM list <linux-pm@vger.kernel.org>
Date: Tue, 30 Apr 2013 10:30:25 +0200
In-Reply-To: <1367298972.4616.41.camel@marge.simpson.net>
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On Tue, 2013-04-30 at 07:16 +0200, Mike Galbraith wrote:

> Well now, that's not exactly what I expected to see for AIM7 compute.
> Filesystem is munching cycles otherwise used for compute when load is
> spread across the whole box vs consolidated.

So AIM7 compute performance delta boils down to: powersaving stacks
tasks, so they pat single bit of spinning rust sequentially/gently.

-Mike

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