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Review

Review. Jehan-François Pâris Fall 2004. Spring. What do shuttle do to improve the performance of door invocations?. Exokernel. What is a LibOS?. Spin and Nooks. Which one of them is the most fault-tolerant?. Clocks. What would happen if we rolled back a computer clock, by say, one hour?.

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Review

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  1. Review Jehan-François Pâris Fall 2004

  2. Spring • What do shuttle do to improve the performance of door invocations?

  3. Exokernel • What is a LibOS?

  4. Spin and Nooks • Which one of them is the mostfault-tolerant?

  5. Clocks • What would happen if we rolled back a computer clock, by say, one hour?

  6. Spring • What do shuttle do to improve the performance of door invocations? • They put the invoked process in the RUNNING state

  7. Exokernel • What is a LibOS? • A LibOS is a user-level library providing to users the same interface as a regular OS

  8. Spin and Nooks • Which one of them is the mostfault-tolerant? • Spin because it prevents ALL unauthorized accesses to kernel resources

  9. Clocks • What would happen if we rolled back a computer clock, by say, one hour? • Al the events occurring during the next hour will have incorrect timestamps.

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