On Sunday 17 April 2011 19:26:31 Radosław Smogura wrote: > Kernel merges vm_structs. So mappings are compacted. I'm not kernel > specialist, but skipping memory consumption, for not compacted mappings, > kernel uses btrees for dealing with TLB, so it should not matter if there > is 100 vm_structs or 100000 vm_structs. But the CPUs TLB cache has maybe 16/256 (1lvl, 2nd) to 64/512 entries. That will mean that there will be cachemisses all over. Additionally your scheme requires flushing it regularly...
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