一.安装测试工具
1.安装 ab 测试工具
1.安装
yum -y install httpd-tools
2.简单使用
ab -c 12 -n 500000 http://192.168.30.171/
-n requests Number of requests to perform
执行的总请求数
-c concurrency Number of multiple requests to make at a time
并发数
2.安装 awk
1.安装
git clone https://github.com/wg/wrk.git
cd wrk
make
2.简单使用
./wrk -t12 -c400 -d30s --latency http://192.168.30.171/index.html
[root@temp-02 wrk]# ./wrk
Usage: wrk <options> <url>
Options:
-c, --connections <N> Connections to keep open
连接数
-d, --duration <T> Duration of test
测试持续时间
-t, --threads <N> Number of threads to use
指定线程数
-s, --script <S> Load Lua script file
指定 Lua 脚本文件
-H, --header <H> Add header to request
添加请求头
--latency Print latency statistics
打印延迟统计
--timeout <T> Socket/request timeout
超时时间
-v, --version Print version details
打印版本详情
Numeric arguments may include a SI unit (1k, 1M, 1G)
数字参数可以使用以下格式
Time arguments may include a time unit (2s, 2m, 2h)
时间参数可以使用以下格式
二.测试结果展示
1.测试服务器配置
CPU 8核
内存 8G
[root@temp-01 logs]# cat /etc/centos-release
CentOS Linux release 7.6.1810 (Core)
[root@temp-01 logs]# /opt/tengine/sbin/nginx -v
Tengine version: Tengine/2.2.2 (nginx/1.8.1)
2.打开和关闭 Nginx 日志测试对比
1.关闭 Nginx access 日志
## worker_connections 65535;
## worker_processes auto;
## 第一次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.94ms 10.17ms 403.93ms 98.95%
Req/Sec 27.81k 2.44k 43.53k 87.21%
Latency Distribution
50% 1.06ms
75% 1.23ms
90% 1.48ms
99% 13.10ms
9977664 requests in 30.09s, 7.38GB read
Requests/sec: 331545.69
Transfer/sec: 251.04MB
## 第二次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.87ms 16.54ms 802.98ms 98.32%
Req/Sec 27.47k 3.03k 37.21k 91.08%
Latency Distribution
50% 1.06ms
75% 1.24ms
90% 1.53ms
99% 68.43ms
9866325 requests in 30.10s, 7.30GB read
Requests/sec: 327792.62
Transfer/sec: 248.20MB
## 第三次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.08ms 11.78ms 805.37ms 98.85%
Req/Sec 27.59k 2.61k 39.17k 88.74%
Latency Distribution
50% 1.07ms
75% 1.25ms
90% 1.52ms
99% 19.67ms
9903039 requests in 30.10s, 7.32GB read
Requests/sec: 329010.43
Transfer/sec: 249.12MB
2.打开 Nginx access 日志
## worker_connections 65535;
## worker_processes auto;
## 第一次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.75ms 8.54ms 258.51ms 97.01%
Req/Sec 20.78k 2.13k 54.21k 87.58%
Latency Distribution
50% 1.16ms
75% 2.27ms
90% 5.12ms
99% 20.35ms
7431933 requests in 30.10s, 5.50GB read
Requests/sec: 246936.87
Transfer/sec: 186.97MB
## 第二次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 3.38ms 12.65ms 403.54ms 97.85%
Req/Sec 21.99k 2.10k 35.44k 91.63%
Latency Distribution
50% 1.02ms
75% 2.25ms
90% 5.43ms
99% 48.83ms
7895936 requests in 30.10s, 5.84GB read
Requests/sec: 262328.65
Transfer/sec: 198.63MB
## 第三次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 3.05ms 16.21ms 885.71ms 98.74%
Req/Sec 21.78k 2.86k 29.75k 89.57%
Latency Distribution
50% 1.09ms
75% 2.11ms
90% 4.38ms
99% 27.41ms
7816029 requests in 30.10s, 5.78GB read
Requests/sec: 259669.41
Transfer/sec: 196.61MB
3.总结
关闭日志基本维持在32.7万/秒以上
打开日志基本维持在25万/秒左右，低了7万多
3.worker_processes 对性能的影响
跟【1.关闭 Nginx access 日志】测试配置除了将 worker_processes=auto 改为 worker_processes=1 外，其他全部一样
1.worker_processes=1
## 第一次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 36.07ms 97.95ms 1.83s 89.11%
Req/Sec 5.12k 2.52k 25.83k 73.33%
Latency Distribution
50% 1.12ms
75% 7.30ms
90% 142.08ms
99% 353.08ms
1764512 requests in 30.10s, 1.30GB read
Socket errors: connect 0, read 0, write 0, timeout 69
Requests/sec: 58622.25
Transfer/sec: 44.39MB
## 第二次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 34.94ms 92.78ms 1.84s 88.59%
Req/Sec 5.08k 2.71k 24.16k 67.80%
Latency Distribution
50% 1.11ms
75% 5.95ms
90% 140.54ms
99% 326.47ms
1755504 requests in 30.10s, 1.30GB read
Socket errors: connect 0, read 0, write 0, timeout 47
Requests/sec: 58331.95
Transfer/sec: 44.17M
## 第三次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 40.46ms 116.94ms 1.86s 91.15%
Req/Sec 5.04k 2.16k 25.99k 74.91%
Latency Distribution
50% 1.13ms
75% 11.83ms
90% 146.93ms
99% 456.04ms
1774127 requests in 30.10s, 1.31GB read
Socket errors: connect 0, read 0, write 0, timeout 84
Requests/sec: 58946.37
Transfer/sec: 44.63MB
2.worker_processes=16
## 第一次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.09ms 8.61ms 321.66ms 98.20%
Req/Sec 26.25k 3.01k 42.40k 91.68%
Latency Distribution
50% 1.05ms
75% 1.41ms
90% 2.23ms
99% 19.83ms
9420675 requests in 30.10s, 6.97GB read
Requests/sec: 312980.77
Transfer/sec: 236.98MB
## 第二次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.38ms 11.58ms 212.98ms 98.62%
Req/Sec 26.85k 2.28k 37.55k 88.25%
Latency Distribution
50% 1.04ms
75% 1.37ms
90% 2.05ms
99% 24.42ms
9641055 requests in 30.10s, 7.13GB read
Requests/sec: 320308.21
Transfer/sec: 242.53MB
## 第三次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.35ms 10.73ms 209.90ms 98.44%
Req/Sec 26.68k 2.63k 43.19k 92.27%
Latency Distribution
50% 1.04ms
75% 1.41ms
90% 2.38ms
99% 21.99ms
9577321 requests in 30.10s, 7.08GB read
Requests/sec: 318220.12
Transfer/sec: 240.95MB
2.worker_processes=4
## 第一次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 9.73ms 25.08ms 874.22ms 89.77%
Req/Sec 15.11k 2.62k 26.25k 78.02%
Latency Distribution
50% 0.98ms
75% 4.01ms
90% 35.52ms
99% 93.07ms
5417171 requests in 30.10s, 4.01GB read
Requests/sec: 179959.48
Transfer/sec: 136.26MB
## 第二次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 9.84ms 27.29ms 853.33ms 90.77%
Req/Sec 14.22k 2.50k 25.67k 72.18%
Latency Distribution
50% 714.00us
75% 3.32ms
90% 34.50ms
99% 116.57ms
5091237 requests in 30.10s, 3.76GB read
Requests/sec: 169145.06
Transfer/sec: 128.07MB
## 第三次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 10.23ms 28.65ms 859.30ms 90.72%
Req/Sec 14.30k 2.81k 29.18k 74.66%
Latency Distribution
50% 721.00us
75% 3.62ms
90% 36.44ms
99% 114.73ms
5102272 requests in 30.10s, 3.77GB read
Requests/sec: 169509.31
Transfer/sec: 128.35MB
3.升级 CPU 为16核，其他配置保持不变，worker_processes=16
## 第一次
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.70ms 6.68ms 209.37ms 98.42%
Req/Sec 26.68k 2.73k 34.98k 75.71%
Latency Distribution
50% 1.02ms
75% 1.40ms
90% 2.04ms
99% 11.04ms
9574645 requests in 30.06s, 7.08GB read
Requests/sec: 318514.85
Transfer/sec: 241.17MB
## 第二次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.07ms 10.01ms 213.09ms 98.90%
Req/Sec 27.42k 3.24k 40.85k 83.20%
Latency Distribution
50% 0.99ms
75% 1.35ms
90% 2.02ms
99% 13.23ms
9842622 requests in 30.10s, 7.28GB read
Requests/sec: 327037.08
Transfer/sec: 247.62MB
## 第三次
[root@temp-02 wrk]# ./wrk -t12 -c400 -d30s --latency http://192.168.30.171/
Running 30s test @ http://192.168.30.171/
12 threads and 400 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.41ms 5.08ms 204.71ms 98.58%
Req/Sec 28.88k 2.97k 41.41k 74.83%
Latency Distribution
50% 0.95ms
75% 1.27ms
90% 1.77ms
99% 8.16ms
10368344 requests in 30.10s, 7.67GB read
Requests/sec: 344482.51
Transfer/sec: 260.83MB
4.总结
worker_processes=1，基本维持在不到6万
worker_processes=4，基本维持在17万
worker_processes=16，虽然线程调成了16，但是由于 CPU 还是8核心，所以性能并没有提升，还是维持在32万左右
worker_processes=16，并调整 CPU 为16核心，还是维持在32万左右
因为在每秒32万左右的情况下，请求 Nginx 默认主页的时候网络带宽占用已经达到1000M，所以此时的瓶颈已经不在 CPU
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