[PR] support jemalloc profiler (brpc)

via GitHub Thu, 15 Aug 2024 07:28:03 -0700


GreateCode opened a new pull request, #2737:
URL: https://github.com/apache/brpc/pull/2737


   ### What problem does this PR solve?
   
   Issue Number: resolve #1962 
   
   Problem Summary: 支持jemalloc profiler
   
   ### What is changed and the side effects?
   
   Changed: 增加jemalloc mallctl和弱符号修饰
   
   用法：
   1. 编译jemalloc需--enable-prof
   2. 启动进程：MALLOC_CONF="prof:true" LD_PRELOAD=/xxx/lib/libjemalloc.so 
./bin/test_server
   3. 可使用FLAGS_je_prof_active在进程running期间开启/关闭采样；
   4. 改变FLAGS_je_prof_dump会dump heap文件；
   5. FLAGS_je_prof_reset可清理已采样数据和重置prof选项，并且动态设置采样率，默认2^19B；
   
   样例：
   
![image](https://github.com/user-attachments/assets/41f48ea5-ed52-4498-8b56-be6abdae29a2)
   
![image](https://github.com/user-attachments/assets/82d10c80-b9ee-45c2-9983-ef76e936a4af)
   
![image](https://github.com/user-attachments/assets/f8031492-447a-4896-8628-949458ebef6d)
   
   
   Side effects:
   - Performance effects(性能影响):
   
   - Breaking backward compatibility(向后兼容性): 
   
   ---
   ### Check List:
   - Please make sure your changes are compilable(请确保你的更改可以通过编译).
   - When providing us with a new feature, it is best to add related 
tests(如果你向我们增加一个新的功能, 请添加相关测试).
   - Please follow [Contributor Covenant Code of 
Conduct](https://github.com/apache/brpc/blob/master/CODE_OF_CONDUCT.md).(请遵循贡献者准则).
   


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[PR] support jemalloc profiler (brpc)

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