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Date: Tue, 29 Jan 2002 12:54:21 +0100
From: Helge Hafting <helgehaf@aitel.hist.no>
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To: Momchil Velikov <velco@fadata.bg>,
        linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Note describing poor dcache utilization under high memory pressure
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Momchil Velikov wrote:
> 
> >>>>> "Daniel" == Daniel Phillips <phillips@bonn-fries.net> writes:
[...]
> Daniel> It's only touching the ptes on tables that are actually used, so if a parent
> Daniel> with a massive amount of mapped memory forks a child that only instantiates
> Daniel> a small portion of it (common situation) then the saving is pretty big.
> 
> Umm, all the ptes af the parent ought to be made COW, no ?

Sure. But quite a few of them may be COW already, if the parent 
itself is a result of some earlier fork.

Helge Hafting
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