Messages in this thread | | | Date | Tue, 29 Jan 2002 15:25:26 -0200 (BRST) | From | Rik van Riel <> | Subject | Re: Note describing poor dcache utilization under high memory pressure |
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On Tue, 29 Jan 2002, Oliver Xymoron wrote:
> Daniel's approach seems to be workable (once he's spelled out all the > details) but it misses the big performance win for fork/exec, which is > surely the common case. Given that exec will be throwing away all these > mappings, we can safely assume that we will not be inheriting many shared > mappings from parents of parents so Daniel's approach also still ends up > marking most of the pages RO still.
It gets worse. His approach also needs to adjust the reference counts on all pages (and swap pages).
kind regards,
Rik -- DMCA, SSSCA, W3C? Who cares? http://thefreeworld.net/
http://www.surriel.com/ http://distro.conectiva.com/
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