No prophets here: Supplying Performance Hints

  • Need additional information for optimum performance

    • Different from Objectivity clustering hints
      • Database clustering
      • Processing mode (sequential/random)
      • Desired service levels
  • Information is Objectivity independent

    • Need a mechanism to tunnel opaque information
  • Client supplies hints via oofs_set_info() call

    • Information relayed to AMS in a transparent way
    • AMS relays information to underlying file system via oofs()

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