Thanks Bill n Antoine ..

Here is the updated one : ( tried without Kafka API ) .

public class HelloWorldServer {

public static void main(final String[] args) {

Undertow server = Undertow.builder().addHttpListener(8009, "localhost").setHandler(new HttpHandler() {

@Override

public void handleRequest(final HttpServerExchange exchange) throws Exception {

if (exchange.getRequestMethod().equals(Methods.POST)) {

exchange.getRequestReceiver().receiveFullString(new Receiver.FullStringCallback() {

                   @Override

                   public void handle(HttpServerExchange exchange, String message) {

                    System.out.println(" Received String ==> "+message);

                       exchange.getResponseSender().send(message);

                   }

               });

} else {

exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "text/plain");

exchange.getResponseSender().send("FAILURE");

}

}

}).build();

server.start();

}

}

Oops seems to no improvement :

Running 1m test @ http://localhost:8009/

  100 threads and 1000 connections

  Thread Stats   Avg      Stdev     Max   +/- Stdev

    Latency    25.79ms   22.18ms 289.48ms   67.66%

    Req/Sec   437.76     61.71     2.30k    80.26%

  Latency Distribution

     50%   22.60ms

     75%   37.83ms

     90%   55.32ms

     99%   90.47ms

  2625607 requests in 1.00m, 2.76GB read

Requests/sec:  43688.42

Transfer/sec:     47.08MB

:-( :-( ..

--Senthil

On Fri, Jun 23, 2017 at 1:47 AM, Antoine Girard <antoine.girard@ymail.com> wrote:

You can use the Receiver API, specifically for that purpose.

On the exchange, call: getRequestReceiver();

You will get a receiver object:

https://github.com/undertow-io/undertow/blob/master/core/src/main/java/io/undertow/io/Receiver.java

On the receiver you can call: receiveFullString, you have to pass it a callback that will be called when the whole body has been read.

Please share your results when you test this further!

Cheers,

Antoine

On Thu, Jun 22, 2017 at 8:27 PM, SenthilKumar K <senthilec566@gmail.com> wrote:

Seems to Reading Request body is wrong , So what is the efficient way of reading request body in undertow ?

--Senthil

On Thu, Jun 22, 2017 at 11:30 PM, SenthilKumar K <senthilec566@gmail.com> wrote:

Hello Undertow Dev Team ,

      I have been working on the use case where i should create simple http server to serve 1.5 Million Requests per Second per Instance .. 

Here is the benchmark result of Undertow :

Running 1m test @ http://127.0.0.1:8009/

  20 threads and 40 connections

  Thread Stats   Avg      Stdev     Max   +/- Stdev

    Latency     2.51ms   10.75ms 282.22ms   99.28%

    Req/Sec     1.12k   316.65     1.96k    54.50%

  Latency Distribution

     50%    1.43ms

     75%    2.38ms

     90%    2.90ms

     99%   10.45ms

  1328133 requests in 1.00m, 167.19MB read

Requests/sec:  22127.92

Transfer/sec:      2.79MB

This is less compared to other frameworks like Jetty and Netty .. But originally Undertow is high performant http server .. 

Hardware details:

Xeon CPU E3-1270 v5 machine with 4 cores ( Clock 100 MHz, Capacity 4 GHz) , Memory : 32 G , Available memory 31 G.

I would need Undertow experts to review the server code below and advice me on tuning to achieve my goal( ~1.5 Million requests/sec ).

Server :

Undertow server = Undertow.builder()

               .addHttpListener(8009, "localhost")

               .setHandler(new Handler()).build();

server.start();

Handler.Java

    final Pooled<ByteBuffer> pooledByteBuffer =          

                 exchange.getConnection().getBufferPool().allocate();

final ByteBuffer byteBuffer = pooledByteBuffer.getResource();

   byteBuffer.clear();

   exchange.getRequestChannel().read(byteBuffer);

   int pos = byteBuffer.position();

   byteBuffer.rewind();

   byte[] bytes = new byte[pos];

   byteBuffer.get(bytes);

   String requestBody = new String(bytes, Charset.forName("UTF-8") );

   byteBuffer.clear();

   pooledByteBuffer.free();

   final PostToKafka post2Kafka = new PostToKafka();

try {

post2Kafka.write2Kafka(requestBody);  { This API can handle  ~2 Millions events per sec }

} catch (Exception e) {

e.printStackTrace();

}

    exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "text/plain");

    exchange.getResponseSender().send("SUCCESS");

--Senthil

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