| commit | db54c65d094fe2efda6500569b11238f78f15e97 | [log] [tgz] |
|---|---|---|
| author | Gong Dewei <kylixs@qq.com> | Fri Nov 03 09:45:28 2023 +0800 |
| committer | GitHub <noreply@github.com> | Fri Nov 03 09:45:28 2023 +0800 |
| tree | cd9e30375502244177b3bc3c19334286581c24b1 | |
| parent | 27214388200183c0a27ca57eb7041aa9d4aff921 [diff] |
Optimize bytebuddy type description performance (#637) ### Improve the performance of type description of byte-buddy The goal is to get the original class description at re-transform, so as to generate consistent results when the Skywalking agent is enhanced again (including implementing the EnhancedInstance interface, auxiliary fields and methods, etc.) The previous type description used the `AgentBuilder.DescriptionStrategy.Default.POOL_FIRST` policy to get origin type description, which slows down the application startup, due to heavy I/O operations and parsing bytecode. New way is to remove dynamic fields, methods and interfaces generated by SkyWalking Agent from `TypeDescription`, and **make it as origin type descripton**. **Key feature** : * No need to cache `TypeDescription` objects, less memory used. * It only applies to the re-transform class processing flow and does not affect the startup process. **Process flow:** 1. Find `TypeDescription` from commonly used type cache, such as primitive class. 2. Delegate to `AgentBuilder.DescriptionStrategy.Default.HYBRID` 3. Wrap `TypeDescription` by `SWTypeDescriptionWrapper` , remove fields, methods, interface generated by SkyWalking. **Relative Issue:** https://github.com/apache/skywalking/issues/11460
SkyWalking-Java: The Java Agent for Apache SkyWalking, which provides the native tracing/metrics/logging abilities for Java projects.
SkyWalking: an APM(application performance monitor) system, especially designed for microservices, cloud native and container-based (Docker and Kubernetes) architectures.
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