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Zeroing freed memoryZeroing freed memoryPosted Nov 13, 2008 0:48 UTC (Thu) by nix (subscriber, #2304)In reply to: Zeroing freed memory by Felix_the_Mac Parent article: /dev/ksm: dynamic memory sharing
Because it pointlessly blows the dcache (a precious resource), generally
to very little gain, because a lot of freed userspace pages are reused for something other than userspace pages and are filled with something else, and those pages which *are* reused for other userspace pages are zeroed at *that* point.
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Zeroing freed memory Posted Nov 13, 2008 22:45 UTC (Thu) by bdauvergne (subscriber, #6989) [Link]
and there is still madvise(MADV_DONTNEED) to release the physical pages to the system.
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