Question

使用Scala 2.12.2，Akka 2.5.1，Akka Http 10.0.6

  def main(args: Array[String]): Unit = {
    implicit val actorSystem = ActorSystem("system")
    implicit val actorMaterializer = ActorMaterializer()

    val route =
      pathSingleSlash {
        get {
          complete {
            "Hello World!"
          }
        }
      }

    val bindingFuture = Http().bindAndHandle(route, "localhost", 8080)
    val serverBinding = Await.result(bindingFuture, Duration.Inf)
    println(s"Bind complete. Server running and listening at ${serverBinding.localAddress}")
    scala.io.StdIn.readLine()

    Await.result(serverBinding.unbind(), Duration.Inf)
    Await.result(actorSystem.terminate(), Duration.Inf)
    print("Exiting.")
  }

我使用wrk bencharking工具

wrk -t4 -c64 -d60s --latency http://localhost:8080

Running 1m test @ http://localhost:8080
  4 threads and 64 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     6.14ms   29.25ms 826.31ms   96.70%
    Req/Sec    13.86k     4.88k   43.81k    69.37%
  Latency Distribution
     50%  835.00us
     75%    1.24ms
     90%   11.57ms
     99%   87.31ms
  3278911 requests in 1.00m, 484.69MB read
Requests/sec:  54607.92
Transfer/sec:      8.07MB

性能不错，但其他框架和语言做得更好。有没有办法改善这个简单案例的Akka Http表现？

我看到一个非常类似的线程，它以阻塞Thread.sleep操作为中心。我现在专注于更简单的非阻塞用例。

为了比较，这个简单的go程序：

package main

import (
    "io"
    "net/http"
)

func hello(w http.ResponseWriter, r *http.Request) {
    io.WriteString(w, "Hello World!")
}

func main() {
    http.HandleFunc("/", hello)
    http.ListenAndServe(":8080", nil)
}

更快：

wrk -t4 -c64 -d60s http://localhost:8080 --latency

Running 1m test @ http://localhost:8080
  4 threads and 64 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     1.04ms    2.12ms 151.99ms   99.92%
    Req/Sec    16.02k     1.32k   19.55k    58.33%
  Latency Distribution
     50%    0.96ms
     75%    1.10ms
     90%    1.16ms
     99%    1.34ms
  3824550 requests in 1.00m, 470.51MB read
Requests/sec:  63740.53
Transfer/sec:      7.84MB

这些数字在我的MacBook上运行。我在运行Debian 8的AWS c4.4xlarge EC2实例上运行了相同的测试，并且包括akka，Go和其他一些组合在内的所有REST测试都比我的笔记本电脑运行得更快（我希望如此）。我没有方便的数字。

Akka Http Hello World Performance

0 个答案: