Nginx与Tomcat作为前端服务器的性能比较

Nginx与Tomcat作为前端服务器的性能比较

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摘要

最近总遇到使用tomcat还是使用nginx进行前端文件访问的争论
想着出差周末在酒店, 可以自己进行一下简单的测试.
希望能够对未来的工作进行一些指导.

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测试脚本

30KB 文件测试
ab -c 1000 -n 50000 -k http://127.0.0.1:5201/index.html
7.5MB 文件测试
ab -c 1000 -n 50000 -k http://127.0.0.1:5201/zhaobsh.html

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简要测试结果

TPS的比较, 值越大越好

文件大小	tomcat-TPS	nginx-TPS
20KB	44094	66418
7.5MB	585	672

响应时间的比较, 值越小越好

文件大小	tomcat-RT	nginx-RT
20KB	22.679	15.056
7.5MB	1708.946	1488.010

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测试结果简要分析

Nginx在处理静态文件 在比较零散时 应该至少比tomcat要好 50%
但是如果有网络瓶颈时, 可能不会有这样的效果
但是同时发现. java会开启大量的http线程进行相应
内存占用会比较高, 一个线程至少1MB的栈区.
同时发现JVM几乎不会有堆区GC的现象. 

另外nginx在进行压测时CPU的使用量是很低. 压测java时CPU是能到 30%
但是nginx的CPU使用量比较低.

详细结果信息

说明: 配置相同
tomcat: 采用产品直接运行的界面进行测试
nginx:  采用将文件放到 html目录下面进行测试
测试说明 30KB小文件和 7.5MB的大文件.
直接在物理机器上面进行测试

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使用tomcat直接进行测试

1000个连接 五万个请求时
30KB测试结果
ab -c 1000 -n 50000 -k http://127.0.0.1:5201/index.html

Document Path:          /index.html
Document Length:        30877 bytes

Concurrency Level:      1000
Time taken for tests:   1.134 seconds
Complete requests:      50000
Failed requests:        0
Keep-Alive requests:    49999
Total transferred:      1569699971 bytes
HTML transferred:       1543850000 bytes
Requests per second:    44094.08 [#/sec] (mean)
Time per request:       22.679 [ms] (mean)
Time per request:       0.023 [ms] (mean, across all concurrent requests)
Transfer rate:          1351845.32 [Kbytes/sec] received

7.5MB测试结果
ab -c 1000 -n 50000 -k http://127.0.0.1:5201/zhaobsh.html

Document Path:          /zhaobsh.html
Document Length:        7693835 bytes

Concurrency Level:      1000
Time taken for tests:   85.447 seconds
Complete requests:      50000
Failed requests:        0
Keep-Alive requests:    50000
Total transferred:      384717700000 bytes
HTML transferred:       384691750000 bytes
Requests per second:    585.16 [#/sec] (mean)
Time per request:       1708.946 [ms] (mean)
Time per request:       1.709 [ms] (mean, across all concurrent requests)
Transfer rate:          4396872.91 [Kbytes/sec] received

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使用nginx进行测试

nginx 采用 auto 的woker线程数

ab -c 1000 -n 50000 -k http://127.0.0.1:5300/index.html
30KB测试结果
Document Path:          /index.html
Document Length:        30877 bytes

Concurrency Level:      1000
Time taken for tests:   0.753 seconds
Complete requests:      50000
Failed requests:        56
   (Connect: 0, Receive: 0, Length: 28, Exceptions: 28)
Keep-Alive requests:    49972
Total transferred:      1554678892 bytes
HTML transferred:       1542985444 bytes
Requests per second:    66418.88 [#/sec] (mean)
Time per request:       15.056 [ms] (mean)
Time per request:       0.015 [ms] (mean, across all concurrent requests)
Transfer rate:          2016797.47 [Kbytes/sec] received

7.5MB测试结果
ab -c 1000 -n 50000 -k http://127.0.0.1:5300/zhaobsh.html

Document Path:          /zhaobsh.html
Document Length:        7693835 bytes

Concurrency Level:      1000
Time taken for tests:   74.401 seconds
Complete requests:      50000
Failed requests:        64
   (Connect: 0, Receive: 0, Length: 32, Exceptions: 32)
Keep-Alive requests:    49968
Total transferred:      384457439664 bytes
HTML transferred:       384445547280 bytes
Requests per second:    672.04 [#/sec] (mean)
Time per request:       1488.010 [ms] (mean)
Time per request:       1.488 [ms] (mean, across all concurrent requests)
Transfer rate:          5046292.27 [Kbytes/sec] received

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非本机测试

tomcat 30KB的结果为:

Document Path:          /index.html
Document Length:        30877 bytes

Concurrency Level:      1000
Time taken for tests:   13.396 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    50000
Total transferred:      1569700000 bytes
HTML transferred:       1543850000 bytes
Requests per second:    3732.34 [#/sec] (mean)
Time per request:       267.928 [ms] (mean)
Time per request:       0.268 [ms] (mean, across all concurrent requests)
Transfer rate:          114426.95 [Kbytes/sec] received

nginx 30KB的结果为:

Document Path:          /index.html
Document Length:        30877 bytes

Concurrency Level:      1000
Time taken for tests:   13.469 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    50000
Total transferred:      1555550000 bytes
HTML transferred:       1543850000 bytes
Requests per second:    3712.25 [#/sec] (mean)
Time per request:       269.379 [ms] (mean)
Time per request:       0.269 [ms] (mean, across all concurrent requests)
Transfer rate:          112784.93 [Kbytes/sec] received

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tomcat的压测情况

压测之前:
-                    Thread (reserved=242MB, committed=242MB)
                            (thread #241)
                            (stack: reserved=241MB, committed=241MB)
                            (malloc=1MB #1210)
压测时:
-                    Thread (reserved=390MB, committed=390MB)
                            (thread #387)
                            (stack: reserved=387MB, committed=387MB)
                            (malloc=1MB #1940)
                            (arena=1MB #769)

注意 这是 tomcat 的配置事项:
  tomcat:
    threads:
      max: 500
    accept-count: 1000
    max-connections: 20000
    connection-timeout: 60000

但是需要注意, 仅使用前端, 几乎不会带来GC的现象.
线程会有所增加, 应该是提高了 http的工作线程.