I fork grpc-go uses as gateway just enioy h2c benifit (also remove pb IDL feature),which I implement 0-RTT TLS( cgo invoke libsodium) repalce the standard TLS and handle request just do http request to upstream; In benchmark of bidirectional streaming rpc ,high cpu usage under not much heavy load (maxConcurrencyStream = 100 or 1000 ,the same), according to "go tool pprof ", I find syscall.wirte consume much cpu and RT ( maybe cgo performance?). At least 3 time call system.wrtie (flush) will cause this problem (header + data + status)?Is orignal grpc have this issue?how to resolve or reduce invoke syscall.write？or waiting go add syscall.writev?
<https://lh3.googleusercontent.com/-0TCAcilsguw/WICDnBBHKBI/AAAAAAAAB_k/2OtJVaBq9ykgXPKboM43S8PWR1OXT59oQCEw/s1600/perf.jpg> <https://lh3.googleusercontent.com/-2HXrQl6GgH0/WICENZODGQI/AAAAAAAAB_o/VUTPcgod4wQsI8Csoh7rVSBwcEe-n3yqQCLcB/s1600/strace.jpg> <https://lh3.googleusercontent.com/-IV3cZmIFYso/WICD8niuwnI/AAAAAAAAB_g/liXcah0inB4RQJxujk57SYxfzmjaVCvgQCEw/s1600/pprof.png> -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/baf238be-e6b7-4153-a999-a56757ae8938%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
