Book Image

Mastering Dart

By : Sergey Akopkokhyants
Book Image

Mastering Dart

By: Sergey Akopkokhyants

Overview of this book

Table of Contents (19 chapters)
Mastering Dart
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Isolates


Now, it's time to discuss the performance of our server. We use an HTTP benchmarking tool such as wrk (https://github.com/wg/wrk) by Will Glozer to help us in our investigation. To avoid confusion, we will take the simplest version of our server, as follows:

import 'dart:io';

main() {
  HttpServer
  .bind(InternetAddress.ANY_IP_V4, 8080)
  .then((server) {
    server.listen((HttpRequest request) {
      // Response back to client
      request.response.write('Hello, world!');
      request.response.close();
    });
  });
}

We use this code with a benchmarking tool and keep the 512 concurrent connections open for 30 seconds, as shown in the following code:

./wrk -t1 –c256 -d30s http://127.0.0.1:8080

Here is the result of the preceding code:

Running 30s test @ http://127.0.0.1:8080
  1 threads and 256 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    33.89ms   24.51ms 931.37ms   99.76%
    Req/Sec     7.63k   835.29     9.77k    89.93%
  225053 requests in...