应用ab和wrk对腾讯云日志服务CLS进行压力测试,以此为例对ab和wrk进行阐明
ab
ab,全称是apache benchmark,是apache官网推出的工具。该工具是用来测试Apache服务器的性能的。查看装置的apache的服务器能提供的服务能力,每秒能够解决多少次申请。ab 执行时罕用的选项如下表:
选项 | 作用 |
---|---|
-c | 并发数, 一次发送的总申请数,默认是一次发一个申请。 |
-k | 关上keep-alive,在一个HTTP Session中申请屡次。默认是敞开的。 |
-n | 申请数, 整个benchmark测试过程中须要发送的申请次数。默认是一次,默认状况下失去的性能参数没有代表性。 |
-t | 最大工夫,benchmark测试最长工夫,默认没有限度。 |
-u | 上传文件,PUT操作时应用,须要设置-T选项 |
-T | 设置上传文件的Content-Type |
-p | postfile,指定蕴含post数据的文件 |
-r | 当接管到socket谬误的时候ab不退出 |
<!–more–>
装置
apt-get install apache2-utils
注意事项
- 察看测试工具ab所在机器,以及被测试的前端机的CPU,内存,网络等都不超过最高限度的75%。
- 测试中可能呈现端口有余导致的测试失败
须要调整内核参数以反对端口重用,在Linux平台下须要在/etc/sysctl.conf
文件中增加如下内容
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
kernel.printk = 7 4 1 7
而后运行sudo sysctl –p
失效
应用示例
ab -c 50 -t 60 -n 300000 -k -T 'application/x-protobuf' -p /tmp/post_data.txt -H 'Host: ap-shanghai.cls.myqcloud.com' -H 'Authorization: q-sign-algorithm=sha1&q-ak=AKIDMfonbuXfqpcFicn3YrzwivMelfNwFWcW&q-sign-time=1517472219;1517493819&q-key-time=1517472219;1517493819&q-header-list=content-type;host&q-url-param-list=&q-signature=4a4ed6ddc8ba1dfea73d2bee62def9dce8b0ca3c' http://ap-shanghai.cls.myqcloud.com/log
/tmp/post_data.txt数据为google protocol buffer格局的数据
后果剖析
This is ApacheBench, Version 2.3 <$Revision: 1796539 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, https://www.apache.org/
Benchmarking ap-shanghai.cls.myqcloud.com (be patient)
Completed 30000 requests
Completed 60000 requests
Completed 90000 requests
Completed 120000 requests
Completed 150000 requests
Completed 180000 requests
Completed 210000 requests
Finished 223877 requests
Server Software: openresty
Server Hostname: ap-shanghai.cls.myqcloud.com
Server Port: 80
Document Path: /log
Document Length: 0 bytes
Concurrency Level: 50
Time taken for tests: 60.001 seconds
Complete requests: 223877
Failed requests: 0
Keep-Alive requests: 223027
Total transferred: 38726471 bytes
Total body sent: 108604595
HTML transferred: 0 bytes
Requests per second: 3731.24 [#/sec] (mean)
Time per request: 13.400 [ms] (mean)
Time per request: 0.268 [ms] (mean, across all concurrent requests)
Transfer rate: 630.31 [Kbytes/sec] received
1767.63 kb/s sent
2397.94 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.5 0 34
Processing: 9 13 3.8 13 164
Waiting: 8 13 3.8 13 164
Total: 9 13 3.8 13 164
Percentage of the requests served within a certain time (ms)
50% 13
66% 14
75% 14
80% 14
90% 15
95% 17
98% 22
99% 26
100% 164 (longest request)
从测试后果,咱们能够看到
- 在50个并发申请的状况下,申请60秒,均匀每秒能够解决3731次(也就是说,客户端在这种压力下,看到的QPS为3731)
- 均匀每次申请解决的Latency为13.4ms
- 因为开启了keep-alive,连贯简直不耗时间
- 99%的申请都在26ms内实现,最长的申请是164ms
应用腾讯云主机测试后果如下
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, https://www.apache.org/
Benchmarking ap-shanghai.cls.myqcloud.com (be patient)
Completed 30000 requests
Completed 60000 requests
Completed 90000 requests
Completed 120000 requests
Completed 150000 requests
Completed 180000 requests
Completed 210000 requests
Completed 240000 requests
Completed 270000 requests
Completed 300000 requests
Finished 300000 requests
Server Software: openresty
Server Hostname: ap-shanghai.cls.myqcloud.com
Server Port: 80
Document Path: /log
Document Length: 0 bytes
Concurrency Level: 50
Time taken for tests: 40.095 seconds
Complete requests: 300000
Failed requests: 0
Keep-Alive requests: 298850
Total transferred: 51894250 bytes
Total body sent: 145500000
HTML transferred: 0 bytes
Requests per second: 7482.21 [#/sec] (mean)
Time per request: 6.683 [ms] (mean)
Time per request: 0.134 [ms] (mean, across all concurrent requests)
Transfer rate: 1263.94 [Kbytes/sec] received
3543.82 kb/s sent
4807.77 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.1 0 6
Processing: 4 7 2.9 6 157
Waiting: 4 7 2.9 6 157
Total: 4 7 2.9 6 157
Percentage of the requests served within a certain time (ms)
50% 6
66% 7
75% 7
80% 8
90% 9
95% 10
98% 14
99% 18
100% 157 (longest request)
从后果咱们能够看到,QPS是非腾讯云主机的2倍,为7482
wrk
wrk是一个用来做HTTP benchmark测试的工具。能够产生显著的压力。
装置
apt-get install libssl-dev
git clone https://github.com/wg/wrk.git
cd wrk
make
cp wrk /usr/sbin
应用示例
wrk -c 50 -d 60 -t 5 -s /tmp/wrk_post.lua http://ap-shanghai.cls.myqcloud.com
申请的内容在/tmp/wrk_post.lua
中规定,有5个线程,开启的连贯有50个,运行60秒
其中/tmp/wrk_post.lua
中的内容是
request = function()
mypath = "/tmp/post_data.txt";
local file = io.open(mypath, "r");
assert(file);
local body = file:read("*a"); -- 读取所有内容
file:close();
wrk.body = body
path = "/log"
wrk.headers["Content-Type"] = "application/x-protobuf"
wrk.headers["Host"] = "ap-shanghai.cls.myqcloud.com"
wrk.headers["Authorization"] = "q-sign-algorithm=sha1&q-ak=AKIDMfonbuXfqpcFicn3YrzwivMelfNwFWcW&q-sign-time=1517472219;1517493819&q-key-time=1517472219;1517493819&q-header-list=content-type;host&q-url-param-list=&q-signature=4a4ed6ddc8ba1dfea73d2bee62def9dce8b0ca3c"
return wrk.format("POST", path)
end
后果剖析
Running 1m test @ http://ap-shanghai.cls.myqcloud.com
5 threads and 50 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 15.91ms 25.52ms 880.85ms 98.05%
Req/Sec 745.32 105.11 848.00 94.79%
221561 requests in 1.00m, 36.55MB read
Requests/sec: 3688.17
Transfer/sec: 623.03KB
从测试后果,咱们能够看到
- 在5个并发申请的状况下,开启50个连贯,申请60秒,均匀每秒能够解决3688次(也就是说,客户端在这种压力下,看到的QPS为3688)
- 均匀每次申请解决的Latency为15.91ms
应用腾讯云主机测试后果如下
Running 1m test @ http://ap-shanghai.cls.myqcloud.com
5 threads and 50 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 6.77ms 3.42ms 90.45ms 94.82%
Req/Sec 1.53k 119.04 1.74k 79.27%
457574 requests in 1.00m, 75.48MB read
Requests/sec: 7623.03
Transfer/sec: 1.26MB
从后果咱们能够看到,QPS是非腾讯云主机的2倍,为7623
总结
以上就是用开源的benchmark工具来从客户端的角度来掂量所能获取的QPS以及Latency。但从客户端看到的性能会受到各种因素的影响,例如申请的形式,本机的资源(CPU,内存,网络),CLS的网络情况,CLS的负载等都会影响客户端看到的性能指标。须要依据理论状况来查看性能瓶颈是来自于CLS还是来自于本机。
参考:
- 应用ab和wrk对OSS进行benchmark测试
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