benchmark

Benchmark: jmter-grpc-request

1. Purpose

Verify that jmeter-grpc-request is really stable when performing load testing for the gRPC system. To do this, create a simple gRPC server then use JMeter with jmter-grpc-request sampler to load test with multiple test cases.

2. Prepare materials

Load test model

Apply JMeter's distributed testing model running in non-GUI mode. Using 4 servers to load test, configure each server as follows:

• OS: CentOS Linux
• Mem: 32G
• Swap: 4.0G
• CPU: Intel(R) Xeon(R) 8 core

Creating the gRPC server

Proto file information:

1. shelf.proto

syntax = "proto3";

package bookstore;

option java_outer_classname = "ShelfProto";
option java_package = "generated.com.google.endpoints.examples.bookstore";

// A shelf resource.
message Shelf {
  // A unique shelf id.
  int64 id = 1;
  // A theme of the shelf (fiction, poetry, etc).
  string theme = 2;
}

2. http_bookstore.proto

syntax = "proto3";

package bookstore;

option java_multiple_files = true;
option java_outer_classname = "BookstoreProto";
option java_package = "generated.com.google.endpoints.examples.bookstore";

import "google/api/annotations.proto";
import "google/protobuf/empty.proto";
import "shelf.proto";

// A simple Bookstore API.
//
// The API manages shelves and books resources. Shelves contain books.
service Bookstore {
  // Returns a list of all shelves in the bookstore.
  rpc ListShelves (google.protobuf.Empty) returns (ListShelvesResponse) {
    // Define HTTP mapping.
    // Client example (Assuming your service is hosted at the given 'DOMAIN_NAME'):
    //   curl http://DOMAIN_NAME/v1/shelves
    option (google.api.http) = { get: "/v1/shelves" };
  }
  // Creates a new shelf in the bookstore.
  rpc CreateShelf (CreateShelfRequest) returns (Shelf) {
    // Client example:
    //   curl -d '{"theme":"Music"}' http://DOMAIN_NAME/v1/shelves
    option (google.api.http) = {
      post: "/v1/shelves"
      body: "shelf"
    };
  }
}

// Response to ListShelves call.
message ListShelvesResponse {
  // Shelves in the bookstore.
  repeated Shelf shelves = 1;
}

// Request message for CreateShelf method.
message CreateShelfRequest {
  // The shelf resource to create.
  Shelf shelf = 1;
}

The code override for the gRPC server:

private static class BookstoreServicesImpl extends BookstoreGrpc.BookstoreImplBase {

    @Override
    public void createShelf(CreateShelfRequest request, StreamObserver<Shelf> responseObserver) {
      String messageServer = "SERVER";

      try {
        String theme = request.getShelf().getTheme();
        long id = request.getShelf().getId();

        Shelf shelf = Shelf.newBuilder()
            .setId(id)
            .setTheme(theme + "_" + new Random().nextInt(10000) + "_" + messageServer)
            .build();

        logger.info(request.toString());
        responseObserver.onNext(shelf);
        responseObserver.onCompleted();

      } catch (Exception e) {
        logger.info(e.getMessage());
      }

    }
  }

Deploy information:

• Call via IP, port.
• Only 1 instance, run with command java -cp "./gprc-server-1.0-SNAPSHOT.jar" server.BookStoreServer.
• Very simple, no gateway no load balance.

3. Execute load test

Execute JMeter in non-GUI mode and combine with jmter-grpc-request sampler. With test script here BookService_element_gui.jmx.

4. Reports

With test cases as below.

## 1st result:

• CCU: 500 user
• Duration: 5 min

## 2nd result:

• CCU: 500 user
• Duration: 15 min

## 3rd result:

• CCU: 1000 user
• Duration: 5 min

## 4th result:

• CCU: 120 user
• Duration: 30 min

## 5th result:

• CCU: 120 user
• Duration: 60 min