如何检查我的应用程序的可扩展性

发布于 2024-08-06 01:49:18 字数 135 浏览 4 评论 0原文

我开发了一个应用程序，可以创建大量 PDF 并提供这些文件。（其正常的 Servlet 缓冲服务）。

如何确保我的应用程序能够有效处理多个请求？是否有任何工具可用于测试负载/可扩展性/效率以及我的代码在当前服务器配置下处理多少个并行请求？

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不一样的天空 2024-08-13 01:49:18

您可以使用负载测试器，例如 Tsung

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倚栏听风 2024-08-13 01:49:18

您应该考虑使用负载测试工具，例如 grinder 或 jmeter. grinder 支持脚本编写，而 jmeter 可以让您将 junit 变成负载测试客户端。我个人喜欢 jmeter，因为它支持 junit 以及它良好的 GUI 控制和报告。 jmeter 开箱即用地支持http 和soap。此外，您可以编写自己的插件来满足您的自定义需求。

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深巷少女 2024-08-13 01:49:18

我还推荐 JMeter。您还可以记录浏览器的页面请求以创建 JMeter 测试（HTTP 代理服务器< /a>）。

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东北女汉子 2024-08-13 01:49:18

您还应该有适当的监视工具来查看应用程序在负载下的行为。

一个好的开始是 jvisualvm，它位于最新的 Sun JDK 中。

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沫尐诺 2024-08-13 01:49:18

您可以做的最简单的事情是 Apache 基准测试，如果您运行的是基于 Unix 的系统，或者附带了适用于 Windows 的 Apache Webserver 2.x，则该基准测试可能已经安装。

使用示例；

$ ab -n 1000 -c 20 http://www.google.com/

给我这个输出；

This is ApacheBench, Version 2.3 <$Revision: 655654 gt;
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking www.google.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software:        gws
Server Hostname:        www.google.com
Server Port:            80

Document Path:          /
Document Length:        218 bytes

Concurrency Level:      20
Time taken for tests:   1.826 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Non-2xx responses:      1000
Total transferred:      807000 bytes
HTML transferred:       218000 bytes
Requests per second:    547.55 [#/sec] (mean)
Time per request:       36.527 [ms] (mean)
Time per request:       1.826 [ms] (mean, across all concurrent requests)
Transfer rate:          431.51 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        9   12  14.7     10     337
Processing:    11   24  26.8     17     306
Waiting:       11   22  21.1     16     297
Total:         21   36  30.5     28     350

Percentage of the requests served within a certain time (ms)
  50%     28
  66%     36
  75%     39
  80%     41
  90%     45
  95%     54
  98%     93
  99%    253
 100%    350 (longest request)

The simplest thing you can do is Apache benchmark which is probably already installed if you're running a Unix based system or comes with Apache Webserver 2.x for Windows.

Example use;

$ ab -n 1000 -c 20 http://www.google.com/

Gives me this output;

This is ApacheBench, Version 2.3 <$Revision: 655654 gt;
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking www.google.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software:        gws
Server Hostname:        www.google.com
Server Port:            80

Document Path:          /
Document Length:        218 bytes

Concurrency Level:      20
Time taken for tests:   1.826 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Non-2xx responses:      1000
Total transferred:      807000 bytes
HTML transferred:       218000 bytes
Requests per second:    547.55 [#/sec] (mean)
Time per request:       36.527 [ms] (mean)
Time per request:       1.826 [ms] (mean, across all concurrent requests)
Transfer rate:          431.51 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        9   12  14.7     10     337
Processing:    11   24  26.8     17     306
Waiting:       11   22  21.1     16     297
Total:         21   36  30.5     28     350

Percentage of the requests served within a certain time (ms)
  50%     28
  66%     36
  75%     39
  80%     41
  90%     45
  95%     54
  98%     93
  99%    253
 100%    350 (longest request)

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