grpc-go performance

[junweiyang]

https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5760820306771968
it's seems that go is lower than java performance!

[mwitkow]

Could be down to golang/protobuf serialization being based on reflection.
Gogo protobuf is a drop-in replacement that uses code-generation for proto serialization.
https://github.com/gogo/protobuf
https://discuss.dgraph.io/t/gogoprotobuf-is-extremely-fast/639

Would be interested in someone re-running these benchmarks with the codegen :)

[pcj]

In my own informal tests I'm seeing about 20% slower performance than java. However, go is more consistent, probably due to periodic jvm gc runs. Will try to incorporate gogo protobuf in the repo I'm maintaining and see what I come up with...

https://github.com/pubref/rules_protobuf

[dyu]

Any plans of adding the go results back in the multi-language perf dashboard on http://www.grpc.io/docs/guides/benchmarking.html?

From the earlier results, I was speculating it was go's non-compacting gc that caused the slowdowns.
Hopefully you can post it soon with the go 1.8.0 improvements.