Hi I am a little bit to say that my little benchmark test shows Play's performance cannot match .net, at least in my little laptop. Here is the details:

Play Code

```
// Controller
public class Benchmark extends Controller {
    @CacheFor
    public static void hello() {
        String who = "world";
        render(who);
    }
}
// View
hello ${who}!

```

ASP.Net code

```
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Benchmark.Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <p>Hello <span id="spnName" runat="server"></span></p>
    </div>
    </form>
</body>
</html>

using System;

namespace Benchmark {
    public partial class Default : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            spnName.InnerText = "world";
        }
    }
}

```

benchmark tool: ab, running on the same machine:

```
`ab -n 10000 -c 100 http://localhost/`

```

Play result:

```
Server Software:        Play!
Server Hostname:        localhost
Server Port:            80

Document Path:          /
Document Length:        13 bytes

Concurrency Level:      100
Time taken for tests:   4.839 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Total transferred:      3650000 bytes
HTML transferred:       130000 bytes
Requests per second:    2066.42 [#/sec] (mean)
Time per request:       48.393 [ms] (mean)
Time per request:       0.484 [ms] (mean, across all concurrent requests)
Transfer rate:          736.57 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.5      0       7
Processing:     5   48   7.0     45      79
Waiting:        2   33  11.3     34      74
Total:          5   48   7.1     45      80

Percentage of the requests served within a certain time (ms)
  50%     45
  66%     47
  75%     49
  80%     53
  90%     58
  95%     62
  98%     69
  99%     72
 100%     80 (longest request)

```

asp.net result:

```
Server Software:        Microsoft-IIS/7.5
Server Hostname:        localhost
Server Port:            80

Document Path:          /
Document Length:        5160 bytes

Concurrency Level:      100
Time taken for tests:   3.806 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Non-2xx responses:      10000
Total transferred:      53780000 bytes
HTML transferred:       51600000 bytes
Requests per second:    2627.28 [#/sec] (mean)
Time per request:       38.062 [ms] (mean)
Time per request:       0.381 [ms] (mean, across all concurrent requests)
Transfer rate:          13798.35 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.4      0       2
Processing:     6   38   3.8     37      61
Waiting:        4   27   7.6     28      57
Total:          6   38   3.8     37      61

Percentage of the requests served within a certain time (ms)
  50%     37
  66%     38
  75%     39
  80%     40
  90%     43
  95%     44
  98%     48
  99%     51
 100%     61 (longest request)

```

Notes:

1. IIS warm up very quickly, run the benchmark test 2 times to reach it's peak performance; while it take about 4 or 5 times for Play to reach it's limitation.
2. play is started in prod mode.
3. changing concurrent setting of ab doesn't impact the result 2 much. IIS always out perform play.
4. the configuration of my machine: windows 7 (32bit) on HP 4720s, CPU: i5 M 430 2.27GHz 4 core; memory 4GB

So I am a little bit frustrated as I am a huge play fan and worked on this platform for over 2 years. Does anyone know any way to improve the performance of Play?