TLB Reach

Q1. Explain TLB Reach.

Ans.The TLB reach refers to the amount of memory accessible from the TLB and is simply the number of entries multiplied by the page size.


TLB Reach = Number of entries X Page Size


Ideally, the working set for a process is stored in the TLB. If not, the process will spend a considerable amount of time resolving memory references in the page table rather than the TLB. If we double the number of entries in the TLB, we double the TLB reach.


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