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Posted to dev@brpc.apache.org by "chenBright (via GitHub)" <gi...@apache.org> on 2024/04/06 04:11:36 UTC

[PR] Support start KeepWrite bthread urgent (brpc)

chenBright opened a new pull request, #2591:
URL: https://github.com/apache/brpc/pull/2591

   ### What problem does this PR solve?
   
   Issue Number: resolve #2588
   
   Problem Summary:
   
   ### What is changed and the side effects?
   
   Changed:
   
   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](../../master/CODE_OF_CONDUCT.md).(请遵循贡献者准则).
   


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Re: [PR] Support start KeepWrite bthread urgent (brpc)

Posted by "wasphin (via GitHub)" <gi...@apache.org>.
wasphin commented on PR #2591:
URL: https://github.com/apache/brpc/pull/2591#issuecomment-2041513347

   [absl 4038192a57cb75f7ee671f81a3378ff4c74c4f8e](https://github.com/abseil/abseil-cpp/commit/4038192a57cb75f7ee671f81a3378ff4c74c4f8e) 中删除了 flags 库，当前使用的最新的 absl 20240116.1 没有 flags 库了，我看下怎么识别下依赖


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Re: [PR] Support start KeepWrite bthread urgent (brpc)

Posted by "wasphin (via GitHub)" <gi...@apache.org>.
wasphin commented on PR #2591:
URL: https://github.com/apache/brpc/pull/2591#issuecomment-2041521560

   另外最新版的 protobuf（26.1）又改接口了，目前测 protobuf 22+ ci 安装的最新版的 protobuf，应该不久又会有问题🤦


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Re: [PR] Support start KeepWrite bthread urgent (brpc)

Posted by "chenBright (via GitHub)" <gi...@apache.org>.
chenBright commented on PR #2591:
URL: https://github.com/apache/brpc/pull/2591#issuecomment-2044026120

   > 另外最新版的 protobuf（26.1）又改接口了，目前测 protobuf 22+ ci 安装的最新版的 protobuf，应该不久又会有问题🤦
   
   @wasphin 果然，又有问题了


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Re: [PR] Support start KeepWrite bthread urgent (brpc)

Posted by "wasphin (via GitHub)" <gi...@apache.org>.
wasphin commented on PR #2591:
URL: https://github.com/apache/brpc/pull/2591#issuecomment-2044214460

   晚些我再下载个老版本 prootbuf.rb 吧，另外得看看后面 protobuf 怎么支持更新


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Re: [PR] Support start KeepWrite bthread urgent (brpc)

Posted by "chenBright (via GitHub)" <gi...@apache.org>.
chenBright commented on PR #2591:
URL: https://github.com/apache/brpc/pull/2591#issuecomment-2040973443

   @wasphin 有空帮忙看看protobuf22缺失absl_flag库的问题


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Re: [PR] Support start KeepWrite bthread urgent (brpc)

Posted by "chenBright (via GitHub)" <gi...@apache.org>.
chenBright commented on PR #2591:
URL: https://github.com/apache/brpc/pull/2591#issuecomment-2041785578

   不一定是写不进去。大多数情况应该是StartWrite写完队头数据，但是队列里还有还有其他数据，所以启动协程KeepWrite。
   
   不过 #2588 在压力比较大的时候，整体服务能力都下降了。只优化少数连接上的rpc回包延迟，优化应该有限吧。


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Re: [PR] Support start KeepWrite bthread urgent (brpc)

Posted by "wwbmmm (via GitHub)" <gi...@apache.org>.
wwbmmm commented on PR #2591:
URL: https://github.com/apache/brpc/pull/2591#issuecomment-2041772676

   这个优化会有实际效果吗，如果启动了KeepWrite线程，说明之前的write已经写不进去了，这时再立即KeepWrite，是不是也会写不进去，最终还是要等待epollout


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