基于可信计算的虚拟机在线迁移机制

Virtual Machine Online Migration Mechanism Based on Trusted Computing

传统的内存预拷贝算法在实际应用非常广泛,因而会产生迭代过程中反复重传导致的迁移时间过长问题。所以,对于这一问题,本文在原有基础上,提出一种改进的迁移优化算法,融合迭代脏页重新排序和高效内存压缩的方法。通过计算脏页率并进行重新排序,进而通过压缩算法进行压缩再传输的方式。实验数据显示,该方法能有效减少宕机时间和总迁移时间,提高了迁移性能。

The traditional memory pre-copy algorithm is very widely used in practical application, which will produce the iterative process of repeated retransmission caused by the migration time is too long. So, for this problem, on the basis of the original, this paper proposes an improved migration optimization algorithm, which combines iterative dirty page reordering and efficient memory compression. By calculating the dirty page rate and re-order, and then through the compression algorithm for compression and transmission mode. Experimental data show that this method can effectively reduce the downtime and the total migration time, improve the migration performance.