CS435 - Distributed Systems
with Dr. Basit Qureshi
Tutorial 6
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Read through this tutorial on Clocks and Synchronization.
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1. Describe some problems that may arise from leap second smearing. [S 15]
2. Why using System.nanoTime() is better compared to System.currentTimeMillis();? [S 16]
3. Assume a client and a server are using NTP to sync their clocks. What is the maximum possible error in the NTP clients estimate of skew with regard to one particular server, assuming that both nodes correctly follow the protocol? [S 33]
4. For the following happens-before relation example: