You can use environment variables to get more gRPC logging; 
See https://github.com/grpc/grpc/blob/master/doc/environment_variables.md
I don't think spending 2 seconds to complete a simple RPC look good.

On Friday, December 15, 2023 at 12:33:06 PM UTC-8 Frank Yu wrote:

> Hi GRPC team,
>
> I tried to use grpc C++ with the package 
> version Pkggrpc_cpp_1_29_1377_125. It is a simple "sayhello" 
> implementation, and both the grpc client and grpc server are running on 
> different services of the same node. 
>
> The problem is that I found the sayhello request spent more than 2 seconds 
> to complete. Which is far more than what I expected according to the 
> benchmarking <https://grafana-dot-grpc-testing.appspot.com/?orgId=1>.
>
>
> Here's part of my code.
> *Client:*
> HRESULT
> SayHello(__in REQUEST* helloRequest, __inout RESPONSE* helloResponse)
> {
>     std::shared_ptr<grpc::Channel> channel =
>         grpc::CreateChannel("localhost:53002"
> , grpc::InsecureChannelCredentials());
>
>     std::unique_ptr<App_QADDisk::Stub> stub_(App_QADDisk::NewStub(channel));
>
> ...
>
>     // The actual RPC.
>     *RD_TRACE_LOG((RD_TRACE_INFO, L"Calling gRPC request"));*
>     Status status = stub_->SayHello(&context, request, &reply);
>     *RD_TRACE_LOG((RD_TRACE_INFO, L"Returned gRPC request"));*
> ...
> }
>
> *Server:*
> class AppSayHelloImpl final : public App_SayHello::Service
>     {
>
>         grpc::Status
>         SayHello(ServerContext* context, const
>  Request* request, Response* response) override
>         {
> *            RDOS_INFO << L"Received request: " << request->testmessage();*
>             std::string message = request->testmessage();
>             response->set_message(message);
>             RDOS_INFO << L"returned.";
>             return Status::OK;
>         }
>     };
>
> *Logs:*
> Client:
> [2023/12/14, 06:02:46.536,  INFO, 00019432] Calling gRPC request
> [2023/12/14, 06:02:48.567,  INFO, 00019432] Returned gRPC request
>
> Server:
> [2023/12/14, 06:02:48.567, INFO, 00027292] Received request: test
> [2023/12/14, 06:02:48.567, INFO, 00027292] returned. 
>
>
> Further logging shows that the flow from the client calling SayHello() to 
> the Server trigger the SayHello() function took the 2 seconds.  
>
> Questions:
> 1. Does GRPC client and server write internal logs? If it does, where I 
> can find it on Windows? If not, how can I trace it.
> 2. Any idea about why it take so long sending the request from client to 
> server? Is it expected? If not, how can I debugging/tracing it?
>
> Any response will be appreciated! 
>
>
> Best regards,
> Frank
>
>
>
>
>
>
>

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