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So after testing the memory performance of our clusters using Linpack, View Results, what about the file system access performance? There are many variables at play in this area, so a higher-level view is appropriate rather than a too detailed view.

In order to have comparative numbers, I choose the package IOZone which seemed to be used for this type of activities. IOZone performs many different tests including read, re-read, write, re-write, read-and-write, random mix, backwards reads and a few others. The whole mix then might be an appropriate comparative standard. As details spin out, we could focus on those that most reflecct our environment best; probably random mix.

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