linux-kernel - [RFC] Improving scheduler for asymmetric multi-core processor in Google's summer of code

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Message-ID: <a6b9f31a0904010758r23767adco16ea4ee45d7e158e@mail.gmail.com>
Date:	Wed, 1 Apr 2009 23:58:51 +0900
From:	Hitoshi Mitake <h.mitake@...il.com>
To:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Subject: [RFC] Improving scheduler for asymmetric multi-core processor in 
	Google's summer of code

Hi,

I found an interesting problem, scheduling on Asymmetric multi-core processor.

According to this paper,

http://portal.acm.org/citation.cfm?id=1362694&dl=GUIDE&coll=GUIDE&CFID=28487975&CFTOKEN=68150071

taking performance asymmetry into consideration on multi-core CPUs can
improve scheduler performance.
(And I think discarding this could have bad consequences.)

So I have a question:
Is the current scheduler of Linux aware of possible performance
asymmetry of the cores?
By performance asymmetry I mean a case where different cores run on
different frequencies.

If something tackling this issue is not implemented yet,
I would like to work on that as a project of Google's summer of code.

Thanks
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