Fast Recovery from Operating System Kernel Failures

这项特定研究的目标是提高操作系统内核故障下计算机系统的可用性。本研究的重点是从内核故障中快速恢复的软件机制。这种方法提供了几个好处，如提高服务可用性，降低物理主机的维护成本，降低功耗。研究结果如下：（1）。设计并实现了一种内核故障快速恢复机制。2.）该机制将传统操作系统恢复方法的停机时间减少了至多90%。3.）第三章固态驱动器可以加速所提出的机制的执行，扩展使该机制能够缩短由软件更新引起的停机时间，利用图形处理单元（GPU）加速虚拟机实时迁移，由于其并行处理功能，将虚拟机移动到另一个物理主机而不会丢失任何数据。

The goal of this particular research is to improve availability of computer systems under operating system kernel failures. This research focuses on a software mechanism of quickly recovering from kernel failures. This approach offers several benefits such as improving service availability, reducing maintenance costs of physical hosts, reducing power-consumption. The research outcomes are as follows; 1.) A mechanism to quickly recover from kernel failures are designed and implemented. 2.) The mechanism reduces downtime for a conventional OS recovery method by at most 90%. 3.) Solid-State Drives can accelerate execution of the proposed mechanism，an extension enables the mechanism to shorten downtime caused by software update, leveraging Graphic Processing Units(GPUs) accelerates virtual machine live migration, which move a virtual machine to another physical host without any data loss, due to their parallel processing feature.