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Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2022/06/23 07:35:38 UTC

[GitHub] [dubbo] Jaskey commented on issue #1784: Dubbo调用超时,服务端历史统计的处理耗时很短且找不到对应超时上下文的超时日志

Jaskey commented on issue #1784:
URL: https://github.com/apache/dubbo/issues/1784#issuecomment-1164059952

   > 总结一下,如果出现消费端超时,但是服务端处理时间短,那么有这么几种可能: 1)网络问题:tcpddump/wireshark抓包去判断。 2)dubbo线程池满导致排队:监控两头的线程池状态,以及全链路信息,链路可以拼出来。 3)JVM停顿问题:包括GC的停顿和其他safepoint停顿,特别是后面这个STW停顿,很多人不知道,建议都打印出来。 4)统计不准:服务端有时候我们觉得很快,实际上也慢,只是日志或者其他监控信息不全。
   
   
   第一点是很玄学的地方,因为其他服务同样的网络通常没问题,
   第二点应该大部分都不存在,因为dubbo默认线程池默认是没有队列的,核数一满就直接爆了。


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