| 摘要: |
| 日志是计算机系统中记录事件状态信息的的重要载体, 日志系统负责计算机系统的日志生成、收集和输出. OpenHarmony是新兴的、面向全设备、全场景的开源操作系统. 在所述工作之前, 包括日志系统在内OpenHarmony有许多关键子系统尚未构建, 而OpenHarmony的开源特性使第三方开发者可以为其贡献核心代码. 为了解决OpenHarmony日志系统缺乏的问题, 主要开展如下工作: ① 分析当今主流日志系统的技术架构和优缺点; ② 基于OpenHarmony操作系统的异构设备互联特性设计HiLog日志系统模型规范; ③ 设计并实现第1个面向OpenHarmony的日志系统HiLog, 并贡献到OpenHarmony主线; ④ 对HiLog日志系统的关键指标进行测试和对比试验. 实验数据表明, 在基础性能方面, HiLog和Log的日志写入阶段吞吐量分别为1 500 KB/s和700 KB/s, 相比Android日志系统吞吐量提升114%; 在日志持久化方面, HiLog可以3.5%的压缩率进行持久化, 并且丢包率小于6‰, 远低于Log. 此外, HiLog还具备数据安全、流量控制等新型实用能力. |
| 关键词: 操作系统 日志系统 开源软件 数据安全 流量控制 |
| DOI：10.13328/j.cnki.jos.006900 |
| 分类号: |
| 基金项目:中国科学院战略性先导科技专项(XDA0320000)；国家自然科学基金青年项目(62202457)；中国博士后科学基金(2022M713253) |
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| HiLog: High Performance Log System of OpenHarmony |
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WU Sheng-Yao1, WANG Feng1, WU Yan-Jun1,2, LING Xiang1, QU Sheng1, LUO Tian-Yue1, WU Jing-Zheng1,2
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1.Intelligent Software Research Center, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China;2.State Key Laboratory of Computer Science(Institute of Software, Chinese Academy of Sciences), Beijing 100190, China
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| Abstract: |
| Log is an important carrier of a computer system, which records the states of events, and a log system is responsible for log generation, collection, and output. OpenHarmony is a new open-source, distributed operating system for smart devices in all scenarios of a fully-connected world. Prior to the work described in this study, many key subsystems of OpenHarmony, including the log system, had not been built. The open-source feature of OpenHarmony enables third-party developers to contribute core codes. To solve the problem of the lack of a log system of OpenHarmony, this paper mainly does the following work: ① It analyzes the technical architecture, advantages, and disadvantages of today’s popular log systems. ② It clarifies the model specifications of the log system HiLog according to the interconnection feature of heterogeneous devices in OpenHarmony. ③ It designs and implements the first log system HiLog of OpenHarmony and contributes it to the OpenHarmony trunk. ④ It conducts comparative experiments on the key indicators of HiLog. The experimental data show that in terms of basic performance, the throughput of HiLog and Log is 1500 KB/s and 700 KB/s, respectively, which indicates that HiLog has a 114% improvement over the log system of Android. In terms of log persistence, the packet loss of HiLog is less than 6‰ with a compression rate of 3.5% for persistency, much lower than that of Log. In addition, HiLog also has some novel practical functions such as data protection and flow control. |
| Key words: operating system log system open-source software data security flow control |
