Subject: Re: [Lse-tech] [patch] sched-domain cleanups,
	sched-2.6.5-rc2-mm2-A3
From: Arjan van de Ven <arjanv@redhat.com>
Reply-To: arjanv@redhat.com
To: Andi Kleen <ak@suse.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>, mingo@elte.hu,
       jun.nakajima@intel.com, ricklind@us.ibm.com,
       linux-kernel@vger.kernel.org, akpm@osdl.org, kernel@kolivas.org,
       rusty@rustcorp.com.au, anton@samba.org, lse-tech@lists.sourceforge.net,
       mbligh@aracnet.com
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> Regression on what workload? The 2.4 kernel who did the
> early balancing didn't seem to have problems.

well the hard balance is between a program that just splits of one
thread and has those 2 threads working closely together (in which case
you want the 2 threads to be together on the same quad in a quad-like
setup) and a program that splits of a thread and has the 2 threads
working basically entirely independent.

Benchmarks are typically of the later kind... but real world
applications ???? The ones I can think of using threads are of the
former kind.

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