DTLB Page Walks

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DTLB Page Walks

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Can somebody explain to me in plain english the problem with DTLB Page Walks.

I seem to have a confusion with it.

Basically I have a slide that states to "Check Paging Issues"

- Measure density of data access pattern with respect to 4K page
- Reads From the processor / DTLB Page Walks
- A good number is 64
o 4K/cache line size = 4K/64 bytes = 64
- Low value indicates data access pattern is inefficient
oIncur frequent DTLB miss penalty
oCan cause excess memory traffic

I have some problems swallowing this one...

Thanks in advance

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