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Subject: Re: remove __read_mostly?
From: Arjan van de Ven <arjan@infradead.org>
To: Andrew Morton <akpm@osdl.org>
Cc: Christoph Lameter <clameter@engr.sgi.com>,
       Ravikiran G Thirumalai <kiran@scalex86.org>,
       linux-kernel@vger.kernel.org
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> Because if we use this everywhere where it's supposed to be used, we end up
> with .bss and .data 100% populated with write-often variables, packed
> closely together.  The cachelines will really flying around.

this argument is true if you have unrelated data together; however if
related data is together than suddenly you improve and increase cache
density....