On 06/08/2010 09:43 PM, Gordan Bobic wrote:
Is this plausible? I'm trying to work out if it's even worth considering this approach to enable all memory used by in a system to be open to KSM page merging, rather than only memory used by specific programs aware of it (e.g. kvm/qemu). Something like this would address the fact that container based virtualization (OpenVZ, VServer, LXC) cannot benefit from KSM. What I'm thinking about is somehow intercepting malloc() and wrapping it so that all malloc()-ed memory gets madvise()-d as well. Has this been done? Or is this too crazy an idea?
It should work. Note that the the malloced memory should be aligned in order to get better sharing.
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