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压测环境

K8S容器中安装wrk，scg（Spring Cloud Gateway）发布在k8s容器中，使用nginx访问scg，scg转发到nginx的html页面。

k8s容器配置：4核、8G内存

wrk：

jvm配置：基本不占用内存，配置1G即可。

scg配置：

spring:  application:    name: scg-testserver:  servlet:    context-path: /  tomcat:    accept-count: 200 #连接数    connection-timeout: 3s #连接超时spring:  cloud:    gateway:      httpclient:        connect-timeout: 3000        response-timeout: 3s      routes:        - id: r_maxtest          uri: http://192.168.0.184 # 跳转到nginx本地页面          predicates:            - Path=/gwmanager/**          filters:            - StripPrefix=1

wrk用法

./wrk --latency -t8 -c100 -d10s http://192.168.0.184:30001/gwmanager

• --latency:显示延时分布
• -t：启动线程数，一般为cpu核*2，可以根据IO或cpu密集型进行调整
• -c: 并发数，平分到每个线程中，熟练不能大于可以用TCP端口数
• -d: 持续请求时间

Running 10s test @ http://192.168.0.184:30001/gwmanager  8 threads and 100 connections  Thread Stats   Avg      Stdev     Max   +/- Stdev    Latency    27.41ms   28.46ms  89.75ms   75.26%    Req/Sec   626.35     70.19     1.22k    86.62%  Latency Distribution     50%    6.71ms     75%   54.47ms     90%   79.40ms     99%   83.89ms  49908 requests in 10.01s, 7.19MB readRequests/sec:   4985.86Transfer/sec:    735.26KB

• Latency：响应时间

• Req/Sec：单个线程处理请求数

• Avg:平均值

• Stdev:标准差，值越大说明数据分布均匀，可能是机器或服务性能不稳定导致。

• Max:最大值

• +/- Stdev：正负标准差比例，差值比标准差大或小的数据比率

• Latency Distribution：延时分布多少ms一下请求数比例

• Requests/sec：平均每秒处理请求数

• Transfer/sec：平均每秒传输数据量

测试结果与分析

持续时间测试

[root@k8s-master-yace wrk]# ./wrk --latency -t8 -c100 -d10s http://192.168.0.184:30001/gwmanagerRunning 10s test @ http://192.168.0.184:30001/gwmanager  8 threads and 100 connections  Thread Stats   Avg      Stdev     Max   +/- Stdev    Latency    27.41ms   28.46ms  89.75ms   75.26%    Req/Sec   626.35     70.19     1.22k    86.62%  Latency Distribution     50%    6.71ms     75%   54.47ms     90%   79.40ms     99%   83.89ms  49908 requests in 10.01s, 7.19MB readRequests/sec:   4985.86Transfer/sec:    735.26KB[root@k8s-master-yace wrk]# ./wrk --latency -t8 -c100 -d1m http://192.168.0.184:30001/gwmanagerRunning 1m test @ http://192.168.0.184:30001/gwmanager  8 threads and 100 connections  Thread Stats   Avg      Stdev     Max   +/- Stdev    Latency    27.98ms   29.04ms  95.57ms   74.34%    Req/Sec   613.72     46.70   787.00     70.65%  Latency Distribution     50%    6.52ms     75%   57.97ms     90%   79.76ms     99%   84.23ms  293262 requests in 1.00m, 42.23MB readRequests/sec:   4886.49Transfer/sec:    720.58KB

结论：在并发相同的情况的，持续时间不影响rps。

并发量测试

[root@k8s-master-yace wrk]# ./wrk --latency -t8 -c100 -d10s http://192.168.0.184:30001/gwmanagerRunning 10s test @ http://192.168.0.184:30001/gwmanager  8 threads and 100 connections  Thread Stats   Avg      Stdev     Max   +/- Stdev    Latency    27.41ms   28.46ms  89.75ms   75.26%    Req/Sec   626.35     70.19     1.22k    86.62%  Latency Distribution     50%    6.71ms     75%   54.47ms     90%   79.40ms     99%   83.89ms  49908 requests in 10.01s, 7.19MB readRequests/sec:   4985.86Transfer/sec:    735.26KB[root@k8s-master-yace wrk]# ./wrk --latency -t8 -c200 -d10s http://192.168.0.184:30001/gwmanagerRunning 10s test @ http://192.168.0.184:30001/gwmanager  8 threads and 200 connections  Thread Stats   Avg      Stdev     Max   +/- Stdev    Latency    41.65ms   32.40ms 103.63ms   47.76%    Req/Sec   630.29     72.27     1.11k    75.25%  Latency Distribution     50%   44.15ms     75%   82.33ms     90%   87.58ms     99%   93.23ms  50215 requests in 10.01s, 7.23MB readRequests/sec:   5016.90Transfer/sec:    739.90KB[root@k8s-master-yace wrk]# ./wrk --latency -t8 -c500 -d10s http://192.168.0.184:30001/gwmanagerRunning 10s test @ http://192.168.0.184:30001/gwmanager  8 threads and 500 connections  Thread Stats   Avg      Stdev     Max   +/- Stdev    Latency   100.10ms   43.26ms 435.69ms   76.63%    Req/Sec   611.35    105.46     2.14k    83.62%  Latency Distribution     50%   99.54ms     75%  105.39ms     90%  180.69ms     99%  198.63ms  48697 requests in 10.02s, 7.02MB readRequests/sec:   4861.25Transfer/sec:    717.47KB[root@k8s-master-yace wrk]# ./wrk --latency -t8 -c1000 -d10s http://192.168.0.184:30001/gwmanagerRunning 10s test @ http://192.168.0.184:30001/gwmanager  8 threads and 1000 connections  Thread Stats   Avg      Stdev     Max   +/- Stdev    Latency   202.90ms   65.88ms 669.54ms   63.63%    Req/Sec   597.58    130.27     1.10k    70.12%  Latency Distribution     50%  199.57ms     75%  209.78ms     90%  297.11ms     99%  393.08ms  47606 requests in 10.02s, 6.87MB readRequests/sec:   4749.34Transfer/sec:    701.98KB

结论：随着并发量的提升，rps有下降的趋势，响应时间逐步提升。

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