Abstract:

The load balance is a critical issue of distributed Hash table (DHT), and the previous work shows that there exists O(log n) imbalance of load in Chord. The load distribution of Chord, Pastry, and the virtual servers (VS) balancing scheme and deduces the closed form expressions of the probability density function (PDF) and cumulative distribution function (CDF) of the load in these DHTs is analyzes. The analysis and simulation show that the load of all these DHTs obeys the gamma distribution with similar formed parameters.