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THE FEUTEX TOOLKIT

TLB Reach Comparison

Compare address coverage for two page sizes at supplied TLB capacities.

Computer Systems workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
Formulareach=TLBentries×pageSize
Sources and model references

Worked example

Inputs

Base-page TLB entries
64
Base page size
4096 bytes
Large-page TLB entries
32
Large page size
2097152 bytes
Working set size
16777216 bytes

Expected results

Base-page reach
262144 bytes
Large-page reach
67108864 bytes
Base-page working-set coverage
0.015625 fraction
Large-page working-set coverage
1 fraction

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter the labeled inputs in the indicated units.
  2. Calculate and compare every output against the stated model assumptions.

Try this example

{
  "entries": 64,
  "page": 4096,
  "largeentries": 32,
  "largepage": 2097152,
  "working": 16777216
}

Accuracy and scope

Capacity coverage only; associativity, multilevel TLBs and access locality determine actual misses. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.