java - ab apache 基准测试中的传输率

Question

我正在对一个简单的 helloworld 进行基准测试在我的框架中针对 one 编写的应用程序用SpringBoot编写。

SpringBoot版本的ab日志:

luog~$ ab -n 100000 -c 20 http://localhost:8080/hello?name=rythm
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 10000 requests
Completed 20000 requests
Completed 30000 requests
Completed 40000 requests
Completed 50000 requests
Completed 60000 requests
Completed 70000 requests
Completed 80000 requests
Completed 90000 requests
Completed 100000 requests
Finished 100000 requests


Server Software:        Apache-Coyote/1.1
Server Hostname:        localhost
Server Port:            8080

Document Path:          /hello?name=rythm
Document Length:        155 bytes

Concurrency Level:      20
Time taken for tests:   6.733 seconds
Complete requests:      100000
Failed requests:        0
Total transferred:      32100000 bytes
HTML transferred:       15500000 bytes
Requests per second:    14851.38 [#/sec] (mean)
Time per request:       1.347 [ms] (mean)
Time per request:       0.067 [ms] (mean, across all concurrent requests)
Transfer rate:          4655.56 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       2
Processing:     0    1   0.7      1      15
Waiting:        0    1   0.7      1      15
Total:          0    1   0.7      1      15

Percentage of the requests served within a certain time (ms)
  50%      1
  66%      1
  75%      2
  80%      2
  90%      2
  95%      2
  98%      3
  99%      4
 100%     15 (longest request)

以及 ActFramework 的 ab 日志:

luog~$ ab -n 100000 -c 20 http://localhost:5460/?who=rythm
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 10000 requests
Completed 20000 requests
Completed 30000 requests
Completed 40000 requests
Completed 50000 requests
Completed 60000 requests
Completed 70000 requests
Completed 80000 requests
Completed 90000 requests
Completed 100000 requests
Finished 100000 requests


Server Software:        
Server Hostname:        localhost
Server Port:            5460

Document Path:          /?who=rythm
Document Length:        111 bytes

Concurrency Level:      20
Time taken for tests:   6.796 seconds
Complete requests:      100000
Failed requests:        0
Total transferred:      18600000 bytes
HTML transferred:       11100000 bytes
Requests per second:    14714.64 [#/sec] (mean)
Time per request:       1.359 [ms] (mean)
Time per request:       0.068 [ms] (mean, across all concurrent requests)
Transfer rate:          2672.78 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.0      0       1
Processing:     0    1   1.2      1       9
Waiting:        0    1   1.2      1       9
Total:          0    1   1.2      1       9

Percentage of the requests served within a certain time (ms)
  50%      1
  66%      2
  75%      2
  80%      3
  90%      3
  95%      3
  98%      4
  99%      4
 100%      9 (longest request)

正如我们所看到的，每秒的事务数几乎相同。然而，传输率却有很大不同。 SpringBoot版本超过4.5Kb/s，而Act版本只有2.7Kb/s。

我想知道

1. 为什么响应时间几乎相同而传输速率却如此不同？

2. 如何提高传输速率？我使用 undertow 作为网络层，我可以做些什么来调整 undertow 吗？ Here是我创建 undertow 网络层的代码

Answer 1

处理的请求数量相同，但响应内容和 HTTP header 不同。因此流量也存在差异。