SYN: Ultra-Scale Software Evolution Comprehension [ICPC 2023]
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The comprehension of very large-scale software system evolution remains a challenging problem due to the sheer amount of time-based (i.e., a sequence of changes) data and its intrinsically complex nature (i.e., heterogeneous changes across the entire system source code). It is a necessary step for program comprehension, as systems are not simply created out of thin air in a bang, but are the sum of many changes over long periods of time, by various actors and due to various circumstances. We present SYN, a web-based tool that uses versatile visualization and data processing techniques to create scalable depictions of ultra-scale software system evolution. SYN has been successfully applied on several systems versioned on GitHub, including the nearly 20-year history of the Linux operating system, which totals more than one million commits on more than 100k evolving files.
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SYN: Ultra-Scale Software Evolution Comprehension [ICPC 2023]
- 1. SYN: Ultra-Scale Software Evolution Comprehension Università della Svizzera italiana Software Institute Gianlorenzo Occhipinti · Csaba Nagy · Roberto Minelli · Michele Lanza
- 2. Program comprehension is a challenging activity
- 3. Program comprehension is a challenging activity Lots of time-based data
- 4. Program comprehension is a challenging activity Lots of time-based data Complex and heterogeneous
- 5. SYN
- 7. How does it work?
- 8. GitHub
- 9. GitHub SYN Analyzer Repo Explorer History Builder Metrics Extractor
- 10. GitHub SYN Analyzer Repo Explorer History Builder Metrics Extractor SYN Core View Generator
- 11. GitHub SYN Analyzer Repo Explorer History Builder Metrics Extractor SYN Core View Generator GrapQL Server Interactive Web Interface
- 12. GitHub SYN Analyzer Repo Explorer History Builder Metrics Extractor SYN Core View Generator CLI GrapQL Server Interactive Web Interface
- 13. GitHub SYN Analyzer Repo Explorer History Builder Metrics Extractor SYN Core View Generator CLI GrapQL Server Interactive Web Interface Tudor Gîrba, “Modeling history to understand software evolution,” Ph.D. dissertation, University of Bern, 2005
- 14. ProjectHistory The history of a repository
- 15. ProjectHistory FileHistory 1 * The history of a repository The history of a file (i.e., changes)
- 16. ProjectHistory FileVersion FileHistory 1 * 1 * The history of a repository The history of a file (i.e., changes) A file at a particular point in time
- 17. ProjectHistory ProjectVersion FileVersion FileHistory 1 * 1 * 1 * 1 * The history of a repository Represents a commit with associated FileVersions The history of a file (i.e., changes) A file at a particular point in time
- 18. GitHub SYN Analyzer Repo Explorer History Builder Metrics Extractor SYN Core View Generator CLI GrapQL Server Interactive Web Interface
- 19. GitHub SYN Analyzer Repo Explorer History Builder Metrics Extractor SYN Core View Generator CLI GrapQL Server Interactive Web Interface
- 20. What Time Shape Colors Varia
- 21. What Time Shape Colors Varia
- 22. What Time Shape Colors Varia
- 23. What Time Shape Colors Varia
- 24. What Time Shape Colors Varia
- 26. time FileVersion A file at a particular point in time
- 27. time metric value fixed FileVersion A file at a particular point in time
- 28. Addition Modification Deletion Move Rename Base color FileVersion A file at a particular point in time
- 29. Addition Modification Deletion Move Rename Base color ⚠ Entities occupy the same position throughout their evolution FileVersion A file at a particular point in time
- 30. Addition Modification Deletion Move Rename Base color ⚠ Entities occupy the same position throughout their evolution removed entity FileVersion A file at a particular point in time
- 31. Case Studies
- 32. The Evolution of JetUML 2K 795 10K commits FileHistories FileVersions
- 33. “Initial commit” “Initial Revision” “#1 Move all fields” “#8 Moved to a dedicated package” “#27 Renamed the packages” “#121 Fixed copyrights” “#212 Remove stg from name” “#374 Fix copyrights” " Jan 07, 2015 " Jan 07, 2015 " Jan 07, 2015 " Jan 10, 2015 " Jul 22, 2020 " Nov 26, 2017 " Oct 16, 2015 " Jan 22, 2015 Addition Move Modification Move
- 34. The Evolution of Linux 1M 110K 2M commits FileHistories FileVersions
- 36. SYN: Ultra-Scale Software Evolution Comprehension Università della Svizzera italiana Software Institute Gianlorenzo Occhipinti · Csaba Nagy · Roberto Minelli · Michele Lanza TRY IT OUT!