Messages in this thread | | | Date | Tue, 29 Jan 2002 12:54:21 +0100 | From | Helge Hafting <> | 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.
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