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Page Frame Allocation: Difference between revisions
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* a dword comparison can test up to 32 bits at once and thus speed up allocs
* keeping a pointer to the last allocated bit may improve the performance of the next search (keeping information about the fact all the previous bytes were searched unsucessfully)
===Stack/List of pages===
The address of each available physical frame is stored in a [[stack]]-like dynamic structure. Allocating a page is fast (O(1)), freeing a page too but checking the state of a page is not practical
===Sized Portion Scheme===
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