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Posted to dev@brpc.apache.org by GitBox <gi...@apache.org> on 2021/01/12 10:52:10 UTC

[GitHub] [incubator-brpc] Tuvie commented on issue #1296: brpc rdma异常

Tuvie commented on issue #1296:
URL: https://github.com/apache/incubator-brpc/issues/1296#issuecomment-758574671


   从日志上看，反馈的error status 是12，这个在rdma里代表IBV_WC_RETRY_EXC_ERR，也就是重试次数超限。RDMA和TCP不一样，TCP丢包可以近乎无限的重传，RDMA丢包后，超时重传有次数上限。超出上限后，整个QP会报上面的错，连接中断。
   看上去你测试底层使用的物理网络环境没有做特殊配置。建议在有PFC和ECN网络配置的物理网络环境中使用RoCE。否则确实会出现大量丢包导致连接中断的情况。


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