update pipeline doc && set web_service process num to 4

doc/PIPELINE_SERVING.md

@@ -425,7 +425,7 @@ After the function is enabled, the client will print the log information corresp
 
 ## How to start HTTP service with gRPC-gateway
 
-Based on [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway), PipelineServing can provide RESTful API. Refer to the [document](https://grpc-ecosystem.github.io/grpc-gateway/docs/background.html) of grpc-gateway.
+Based on [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway), PipelineServing can provide RESTful API. Refer to the [document](https://grpc-ecosystem.github.io/grpc-gateway/docs/background.html) of grpc-gateway. Relevant code reference `python/examples/pipeline/grpc-gateway`.
 
 ### Installation
 
@@ -475,7 +475,7 @@ go get -u github.com/golang/protobuf/protoc-gen-go
 ```protobuf
 syntax = "proto3";
 package baidu.paddle_serving.pipeline_serving;
-option go_package = ".;test";
+option go_package = ".;pipeline_gateway";
 
 import "google/api/annotations.proto";
 
@@ -494,8 +494,8 @@ message Request {
 service PipelineService {
   rpc inference(Request) returns (Response) {
     option (google.api.http) = {
-      post: "/v1/example/echo"
-      body: "*"
+      post : "/pipeline/prediction"
+      body : "*"
     };
   }
 };
@@ -579,5 +579,5 @@ go build <filename>.go
 Take imdb model ensemble as an example:
 
 ```shell
-curl -X POST -k http://localhost:8080/v1/example/echo -d '{"key": ["words"], "value": ["i am very sad | 0"]}'
+curl -X POST -k http://localhost:8080/pipeline/prediction -d '{"key": ["words"], "value": ["i am very sad | 0"]}'
 ```

doc/PIPELINE_SERVING_CN.md

@@ -422,7 +422,7 @@ Client 端在 `predict` 接口设置 `profile=True`，即可开启 Profile 功
 
 ## 如何通过 gRPC-gateway 开启 HTTP 服务
 
-基于 [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway)，PipelineServing 可以提供 RESTful API，参考 grpc-gateway 的[文档](https://grpc-ecosystem.github.io/grpc-gateway/docs/background.html)。
+基于 [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway)，PipelineServing 可以提供 RESTful API，参考 grpc-gateway 的[文档](https://grpc-ecosystem.github.io/grpc-gateway/docs/background.html)，相关代码存放在`python/examples/pipeline/grpc-gateway`。
 
 ### 安装依赖
 
@@ -472,7 +472,7 @@ go get -u github.com/golang/protobuf/protoc-gen-go
 ```protobuf
 syntax = "proto3";
 package baidu.paddle_serving.pipeline_serving;
-option go_package = ".;test";
+option go_package = ".;pipeline_gateway";
 
 import "google/api/annotations.proto";
 
@@ -491,8 +491,8 @@ message Request {
 service PipelineService {
   rpc inference(Request) returns (Response) {
     option (google.api.http) = {
-      post: "/v1/example/echo"
-      body: "*"
+      post : "/pipeline/prediction"
+      body : "*"
     };
   }
 };
@@ -576,5 +576,5 @@ go build <filename>.go
 以  imdb model ensemble 为例：
 
 ```shell
-curl -X POST -k http://localhost:8080/v1/example/echo -d '{"key": ["words"], "value": ["i am very sad | 0"]}'
+curl -X POST -k http://localhost:8080/pipeline/prediction -d '{"key": ["words"], "value": ["i am very sad | 0"]}'
 ```

python/paddle_serving_server_gpu/web_service.py

@@ -212,7 +212,7 @@ class WebService(object):
         self.app_instance.run(host="0.0.0.0",
                               port=self.port,
                               threaded=False,
-                              processes=1)
+                              processes=4)
 
     def get_app_instance(self):
         return self.app_instance