AlexStocks opened a new issue #1167:
URL: https://github.com/apache/dubbo-go/issues/1167
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**What would you like to be added**:
```go
func NewServer(opt ...ServerOption) *Server {
s := &Server{}
s.cv = sync.NewCond(&s.mu)
if EnableTracing {
_, file, line, _ := runtime.Caller(1)
s.events = trace.NewEventLog("grpc.Server"))
}
return s
}
```
As the above func shows, the gRPC will trace its invocation if
grpc.EnableTracing is true.
We should disable it in production as etcd.
```go
// etcdmain/etcd.go
func startEtcdOrProxyV2() {
grpc.EnableTracing = false
}
```
**Why is this needed**:
FOR BETTER PERFORMANCE.
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