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Date: Mon, 13 Sep 2010 16:21:23 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>, Mike Galbraith <efault@gmx.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>, Tony Lindgren <tony@atomide.com>
Subject: Re: [RFC patch 1/2] sched: dynamically adapt granularity with
 nr_running
Message-ID: <20100913142123.GA5056@elte.hu>
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* Peter Zijlstra <peterz@infradead.org> wrote:

> IIRC kbuild likes the child to be late, it allows make to spawn more 
> kids and it'll got sleep on completion once it done anyway.

Yes - and this is especially true on "make -j<nr_cpus>" types of 
borderline workloads - the scheduling policy with the highest effective 
parallelism wins.

Thanks,

	Ingo