Add IO benchmark analysis to docs

[sgerbino]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.35%. Comparing base (55090d1) to head (4aa63e6).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #275      +/-   ##
===========================================
- Coverage    92.37%   92.35%   -0.03%     
===========================================
  Files          168      168              
  Lines         9414     9414              
===========================================
- Hits          8696     8694       -2     
- Misses         718      720       +2     

Flag	Coverage Δ
linux	92.36% <ø> (ø)

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