Live Save: An Efficient Snapshot Mechanism for Virtual Machines in Xen
學年 108
學期 2
出版（發表）日期 2020-03-01
作品名稱 Live Save: An Efficient Snapshot Mechanism for Virtual Machines in Xen
作品名稱（其他語言）
著者 Po-Jen Chuang, Yen-Chia Huang
單位
出版者
著錄名稱、卷期、頁數 Journal of Information Science and Engineering 36(2), p.423-440
摘要 We present an efficient snapshot mechanism, briefed as Live Save, to make real time backup of the virtual machine state to a local host. Live Save will iteratively send the state data, store the snapshot file in a local host and, when necessary, send the entire file directly to a remote host – to reduce network bandwidth consumption in existing snapshot practices. In iterative transmissions, when dirty frequency rises to a certain high level, iterations may fail to reduce dirty pages and hence become redundant. To handle the problem, we add a simple judging measure to Live Save to form an Improved Live Save which will adaptively adjust the maximum number of iterations. By maintaining the maximum number of iterations, Improved Live Save can avoid futile iterations – saving unnecessary iterative computation in Live Save. Extended simulation runs are conducted to evaluate the performance of various snapshot mechanisms (Xen Save, Xen Live Migration, Live Migration Save (VNsnap), Live Save and Improved Live Save) in terms of downtime, total execution time and total pages sent. The results show that, in performing the snapshot practice, both Live Save and Improved Live Save are more resource-conserving than the other mechanisms.
關鍵字 cloud computing services;virtualization;Xen;virtual machines;state snapshot mechanisms;dirty frequency;performance evaluation
語言 en
ISSN 1016-2364
期刊性質 國內
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 TWN
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/119025 )

SDGS 優質教育,產業創新與基礎設施