Virtual systems tracing for performance analysis

被引：0
作者：
Heidari P. [1 ]
Desnoyers M. [1 ]
Dagenais M.R. [1 ]
机构：
[1] Department of Computer and Software Engineering, Ecole Polytechnique de Montreal, Montreal, QC, H3C 3A7, P.O. Box 6079, Succ. Downtown
来源：
Open Cybernetics and Systemics Journal | 2011年 / 5卷 / 01期
关键词：
Linux; Performance analysis; Tracing; Virtualization; Xen;
D O I：
10.2174/1874110X01105010001
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper describes extensions to the Linux Trace Toolkit next generation (LTTng), to trace the Xen hypervisor for efficiently tracing complete systems. LTTng is a low impact, modular, extensible, operating system tracer, while Xen is an hypervisor based on paravirtualization. Typically, one or several instances of Linux will run on top of the Xen hypervisor. The extended LTTng is able to trace all Linux instances and the hypervisor layer to give a global view of the system. An automated benchmark was created to measure the overhead imposed by tracing and Xen paravirtualization. It compares the performance of systems, with and without virtualization and tracing. The results obtained with different tests, using this procedure, are presented and show a negligible impact caused by tracing and a reasonable overhead caused by paravirtualization. Nonetheless, for some I/O intensive applications, the overhead imposed by paravirtualization is less negligible. © Heidari et al.
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页码：1 / 15
页数：14
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