实时操作系统RTEMS的复杂网络特征与传播代价研究  

Research of the Complex Network Characteristics and Propagation Price of RTEMS

作　　者：蔚鹏志[1] 王宇[1] 王雷[1] 

机构地区：[1]北京航空航天大学

出　　处：《微计算机信息》2012年第9期332-333,140,共3页Control & Automation

摘　　要：本文从复杂网络的角度分析了实时操作系统RTEM中与硬件相关的C文件夹和与硬件无关的CPUKIT文件夹的结构和性质。通过计算RTEMS从4.6.0到4.10.0共22个版本的一些参数,发现RTEMS的C文件夹和CPUKIT文件夹都具有"小世界"和"无标度"性质。同时本文也计算了RTEMS版本演化过程中节点变对RTEMS可维护性的影响,并采用一种定量度量软件可维护性的概念,平均故障传播代价,计算了RTEMS的CPUKIT各个版本的可维护性。This paper analyzes the structure and property of hardware dependent folder named C and hardware independent folder named CPUKIT in RTOS RTEMS from the perspective of complex networks.Through calculating some properties of RTEMS from version 4.6.0 to 4.10.0,we found that the C folder and CPUKIT folder had ＂Small World＂ and ＂scale free＂ characteristics.At the same time,we calculated the number of nodes impacted by the changed nodes during the evolution of RTEMS.Furthermore,we defined a novel statistical measure called average bug propagation cost to characterize the structural quality of general complex software networks.

关 键 词：复杂网络 可维护性 RTEMS 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]