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Recent Features
LWN.net Weekly Edition for May 23, 2013
An "enum" for Python 3
An unexpected perf feature
LWN.net Weekly Edition for May 16, 2013
A look at the PyPy 2.0 release
It strikes me that this problem has been studied already. For many applications, the kernel *can* discover usage patterns and adapt to save power. See for example the Vertigo project: http://www.arm.com/pdfs/IEMSoftwarePaper-OSDI2002.pdf
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