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论坛精彩讲稿回顾|软件质量和可靠性工程(SRE)

论坛精彩讲稿回顾|软件质量和可靠性工程(SRE)

2026可靠性应用技术国际论坛

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含金量拉满!|2026可靠性应用技术国际论坛豪华嘉宾阵容&议题更新

导语

在数字化时代,软件质量与可靠性已成为企业竞争力的核心。本文基于2024可靠性应用技术国际论坛资料,系统梳理软件可靠性工程(SRE)的关键概念、方法、模型与最佳实践,助你快速掌握SRE精髓。

主题

软件质量和可靠性工程(SRE)

嘉宾介绍

冯永昌;

ISO/TC176技术委员会委员;

美国质量学会院士(ASQ Fellow);

英国皇家质量学院特许质量专员(CQP-MCQI)。

01

什么是软件可靠性?

根据ANSI/IEEE标准定义:软件可靠性是指在指定环境下、指定时间内,软件运行无失效的概率。

与硬件不同,软件失效有其独特的机理:

·失效主因:设计缺陷(而非物理磨损)

·无老化现象:软件没有与能量相关的磨损阶段

·可修复性:定期重启可缓解部分问题

·时间独立性:软件可靠性不是运行时间的简单函数

·环境因素:环境影响输入,但不直接影响可靠性

·冗余局限:相同组件冗余无法提升可靠性

02

软件可靠性的影响因素

数据显示,影响软件可靠性的因素及其占比分别为:

注:技术和人员因素常被忽视,实际上它们对可靠性影响巨大。

03

软件可靠性工程(SRE)发展简史

·1960s-1970s:首次记录软件导致的系统故障(1962);“软件可靠性”术语诞生(1968);注意到“钟形曲线”

·1980s-1990s:美国空军罗马中心开发首个公开预测模型(仅适用于飞机,后未更新)

·2000s以后:专有模型出现,IEEE 1633标准改版贴近实践

04

ISO/IEC 25010 软件质量模型

该模型是国际通用的软件质量评估框架,强调外部度量:通过在测试和使用中观察系统行为来测量质量。

05

SRE核心流程与指标

常用可靠性指标

·MTTF:平均失效时间

·MTTCF:平均关键失效时间

·MTBI:平均中断间隔时间

·MTBCI:平均关键中断间隔时间

·MTSWR:平均软件恢复时间

影响MTTF/MTTCF的三大要素

1、现场缺陷密度:缺陷减半 → MTBF翻倍

2、有效代码大小:有效代码减半 → MTBF翻倍

3、可靠性增长:交付后真实用户运行时间影响成长曲线

06

预测模型 vs 预估模型

07

软件失效分析工具

·SW-FMEA(软件失效模式与影响分析)

·SW-FTA(软件故障树分析)

·根本原因分析、正式产品评审

08

行业对标:SRE能力等级

09

提升软件可靠性的10条实践建议

1、避免“编码一点、测试一点”;避免大版本、大团队;进行微观进度管理

2、强制开发人员进行模块、集成级的白盒测试

3、采用易可视化的技术追踪需求、设计、代码、测试

4、明确软件不该做什么

5、了解最终用户,吸纳领域专家,让客户参与需求

6、即使小版本也不跳过需求、设计、单元测试等环节

7、采用正式评审、SW-FMEA、根因分析等缺陷削减技术

8、流程改进要量体裁衣

9、严格版本控制、缺陷跟踪、变更优先级管理,禁止未记录变更

10、学习如何更好地测试软件,而非单纯延长测试时间

10

相关标准与规范

国际标准(ISO/IEEE)

·ISO/IEC 25010:2011 软件质量模型

·ISO/IEC 25023:2016 产品质量测量

·IEEE 730-2014 软件质量保证过程

·IEEE 1633-2016 软件可靠性推荐实践

国内标准(GB/T)

·GB/T 25000.1-2021 SQuaRE指南

·GB/T 8567-2016 软件文档编制规范

·GB/T 15532-2008 软件测试规范

通用可靠性标准

·IEC 61508-3(功能安全-软件要求)

·SAE JA 1002/1003(软件可靠性项目标准与实施指南)

11

回顾与小结

·软件可靠性是软件质量中最关键的部分

·研究分为三块:建模、测量、改进

建模:已成熟,但不存在通用模型

测量:仍在进化,需间接测量相关因素

改进:困难,源于对软件复杂性认识不足,无法保证100%无缺陷

软件可靠性工程(SRE)不是一蹴而就的,它需要技术、流程、人员的持续优化。掌握上述方法,并结合实际项目灵活应用,才能稳步提升软件交付质量与用户满意度。

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报名参加

2026可靠性应用技术

国际论坛!

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相关链接:

含金量拉满!|2026可靠性应用技术国际论坛豪华嘉宾阵容&议题更新

【培训信息】可靠性测试样本量的实用贝叶斯方法培训开课通知

【培训信息】可靠性导向的产品设计与开发(Desing-for-Reliability)开课通知

【培训信息】新版FMEA理论与实践开课通知

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  1. CONNECT:[ UseTime:0.000638s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001128s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000378s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000283s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000513s ]
  6. SELECT * FROM `set` [ RunTime:0.000213s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000565s ]
  8. SELECT * FROM `article` WHERE `id` = 654944 LIMIT 1 [ RunTime:0.001658s ]
  9. UPDATE `article` SET `lasttime` = 1779434587 WHERE `id` = 654944 [ RunTime:0.001646s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000254s ]
  11. SELECT * FROM `article` WHERE `id` < 654944 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000448s ]
  12. SELECT * FROM `article` WHERE `id` > 654944 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000377s ]
  13. SELECT * FROM `article` WHERE `id` < 654944 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000921s ]
  14. SELECT * FROM `article` WHERE `id` < 654944 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000643s ]
  15. SELECT * FROM `article` WHERE `id` < 654944 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000823s ]
0.114003s