Page History

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• First batch of tests:
  • 1 client and 1 server connected by an transcontinental link (Campina Grande-Brazil / Newark-USA)
  • client sending async operations to server
  • client running during 10 min (average)
  • link = 1MBps, 250ms
  • timeout = 5000ms
  • replication = 5
  • used the following failure detectors:
    • Fixed heartbeat

    • Wiki Markup
      Chen (alpha = \[0, 1000\])

    • Wiki Markup
      Bertier (moderationstep = \[0, 1000\])

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      Phi accrual (threshold = \[.5, 8\]; minwindowsize=50) \\

• Second batch of tests:
  • 200 clients and 1 server connected in an emulated WAN in emulab
  • client sending async operations to server
  • clients running during 10 min (average)
  • link = 2MBps, 250ms, message loss probability of 0.1
  • timeout = 5000ms
  • used the following failure detectors with fixed parameters:
    • Fixed heartbeat
    • Chen (alpha = 1250)
    • Bertier (moderationstep = 1000)
    • Phi-accrual (threshold = 2)
      

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