grpc-go performance

Hi Gophers,

I was learning about grpc. I came across this performance benchmark about various implementations. I understand C++ has highest throughput but Java has about 4 times throughput as compared to Go. Does someone have any idea about such a large performance gap?

https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5760820306771968

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评论：

brokenprogram:

Why does it require login/authentication?

bradfitz:

We're aware. I don't believe anybody's spent much time profiling & tuning it yet.

geodel:

Thanks, it makes sense.

scottjbarr:

Would love to see this, but the app wants to access to my Google account with no indication of what permissions I would be granting. Denied.

qzhao:

As Brad mentioned, we (grpc-go team) have not spent time on profiling and optimization. It will be on the top list of the tasks next quarter.

tclineks:

can someone mirror this content?

kardianos:

I think you got the colors wrong. Are you mixing up Python with Go? From what I see Go is comparable to Java or better, but not as good as C/C++. Languages such as python and Ruby are way behind.

playa_1:

Go is close to C++ and Java for the latency benchmarks but doesn't to very well in the throughput tests.

yangjunwei:

i think go performance is bad better than java! 

fakeNAcsgoPlayer:

Lmao, guys he probably meant tad better. Stop down voting him to hell.