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apache / brpc

brpc is an Industrial-grade RPC framework using C++ Language, which is often used in high performance system such as Search, Storage, Machine learning, Advertisement, Recommendation etc. "brpc" means "better RPC".
https://brpc.apache.org
Apache License 2.0
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RDMA 模块支持 RDMA_READ/RDMA_WRITE 的可行性 #2742

Closed ivanallen closed 1 week ago

ivanallen commented 3 months ago

Is your feature request related to a problem? (你需要的功能是否与某个问题有关?)

存储领域，大块 IO，如果能使用 RDMA_READ/RDMA_WRITE 这种单边操作，会节省 cpu，用更少的核达到更高的吞吐。

目前看代码 send/recv 已经是 zero copy，不确定单边操作是否可获得实质性的收益。

Describe the solution you'd like (描述你期望的解决方法)

可能可以借鉴 NVMe/RDMA Transport spec 中描述的架构。

yanglimingcn commented 3 months ago

@Tuvie 辛苦评估一下，另外，我想再加个问题，现在的rdma可以配置成polling模式吗？或者增加这样的模式可行吗？