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Posted to dev@brpc.apache.org by "vinllen (via GitHub)" <gi...@apache.org> on 2023/09/19 11:30:29 UTC

[I] bthread能否引入STW进行实时打印 (brpc)

vinllen opened a new issue, #2389:
URL: https://github.com/apache/brpc/issues/2389

   **Is your feature request related to a problem? (你需要的功能是否与某个问题有关?)**
   tools工具下有个`gdb_bthread_stack.py`脚本，但是需要gdb attach，会导致gdb挂起，而且性能非常挫，bthread是否可以加一个STW，然后打印bthred stack，类似golang runtime中的实现。
   
   **Describe the solution you'd like (描述你期望的解决方法)**
   
   
   **Describe alternatives you've considered (描述你想到的折衷方案)**
   
   
   **Additional context/screenshots (更多上下文/截图)**
   
   


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "vinllen (via GitHub)" <gi...@apache.org>.
vinllen commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-2487687131

   多种场景吧，比如进程hang住、或者排查长延迟的情况，类似pstack查看调用栈情况，只是bthread之前没有这个功能。


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "chenBright (via GitHub)" <gi...@apache.org>.
chenBright commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-2475577124

   你们在什么场景下需要打印bthread调用栈呢？


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "vinllen (via GitHub)" <gi...@apache.org>.
vinllen commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-2475518812

   牛批 这个功能对我们帮助很大


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "wwbmmm (via GitHub)" <gi...@apache.org>.
wwbmmm closed issue #2389: bthread能否引入STW进行实时打印
URL: https://github.com/apache/brpc/issues/2389


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "chenBright (via GitHub)" <gi...@apache.org>.
chenBright commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-2572426540

   CC @vinllen 


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "wwbmmm (via GitHub)" <gi...@apache.org>.
wwbmmm commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-1725429658

   STW需要语言级别支持吧。对于C++来说，好像只有gdb挂起才能把线程安全地停住吧


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "chenBright (via GitHub)" <gi...@apache.org>.
chenBright commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-2440815112

   @vinllen 可以看看#2797


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "vinllen (via GitHub)" <gi...@apache.org>.
vinllen commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-1727839848

   gdb挂起感觉性能代价比较大，STW比如在协程分配的时候锁内保护，STW也在锁内，不过实现代价是比较高。


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Re: [I] bthread能否引入STW进行实时打印 (brpc)

Posted by "vinllen (via GitHub)" <gi...@apache.org>.
vinllen commented on issue #2389:
URL: https://github.com/apache/brpc/issues/2389#issuecomment-2576920769

   收到，我们内部试一下


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