服务端性能压测利器 Gatling

- 5 mins

Back to Performance Test See Also ScalaJMeterApacheBenchwrk

Quickstart

Offical Quickstart

Installing

➜  gatling wget https://repo1.maven.org/maven2/io/gatling/highcharts/gatling-charts-highcharts-bundle/2.3.0/gatling-charts-highcharts-bundle-2.3.0-bundle.zip
➜  gatling-charts-highcharts-bundle-2.3.0 bin/gatling.sh -h
➜  gatling-charts-highcharts-bundle-2.3.0 tree . -d
├── bin                                         //执行脚本
│   ├── gatling.sh                                  //运行测试
│   └── recorder.sh                                 //启动录制脚本的UI
├── conf                                        //应用自身的配置
│   ├── gatling-akka.conf                       
│   ├── gatling.conf                                
│   ├── logback.xml                                 
│   └── recorder.conf                               
├── lib                                        //应用自身依赖库
│   └── zinc                                            
├── results                                    //存放测试报告
├── target                                              
│   └── test-classes                                    
└── user-files                                 //存放测试脚本
    ├── bodies                                          
    ├── data                                                
    └── simulations                                     
        └── computerdatabase                                
            ├── BasicSimulation.scala
            └── advanced

Gatling 执行测试脚本

    gatling-charts-highcharts-bundle-2.3.0 st user-files/simulations/computerdatabase/BasicSimulation.scala

Test Case

Quickstart Test Case

Test Case中的关键概念,详见#Concepts

Gatling Scenario Explained

Gatling Scenario

Running Gatling

Quickstart Running

Execute Case

Launch $GATLING_HOME/bin/gatling.sh

➜  gatling-charts-highcharts-bundle-2.3.0 bin/gatling.sh 
GATLING_HOME is set to /Users/jiangew/gatling/gatling-charts-highcharts-bundle-2.3.0
18:43:51.565 [WARN ] i.g.c.ZincCompiler$ - Pruning sources from previous analysis, due to incompatible CompileSetup.
Choose a simulation number:
     [0] computerdatabase.BasicSimulation
     [1] computerdatabase.advanced.AdvancedSimulationStep01
     [2] computerdatabase.advanced.AdvancedSimulationStep02
     [3] computerdatabase.advanced.AdvancedSimulationStep03
     [4] computerdatabase.advanced.AdvancedSimulationStep04
     [5] computerdatabase.advanced.AdvancedSimulationStep05
0
Select simulation id (default is 'basicsimulation'). Accepted characters are a-z, A-Z, 0-9, - and _

Select run description (optional)

Simulation computerdatabase.BasicSimulation started...

Reports generated in 0s.
Please open the following file: results/basicsimulation-1505126722282/index.html

Scala crashed issue

Scala Build Crashed

Scala 2.12 require’s newer version of JDK then 1.8.0_111

Config connection timed out

    export JAVA_OPTS="-Dgatling.http.connectionTimeout=5000"

Failed to open socket issue

gatling j.n.ConnectException: Failed to open a socket.

测试机系统调优参考 #Operations

Cannot assign requested address issue

解决 Gatling 端口占用问题

sudo sysctl -w net.ipv4.ip_local_port_range="1025 65535"
sudo sysctl -w net.ipv4.tcp_tw_recycle=1
sudo sysctl -w net.ipv4.tcp_tw_reuse=1
sudo sysctl -w net.ipv4.tcp_timestamps=1
sudo sysctl -w net.ipv4.tcp_max_tw_buckets=50000

查看端口状态

$ ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}'
ESTAB 44853
State 1
FIN-WAIT-1 1
FIN-WAIT-2 2
TIME-WAIT 1338
LISTEN 5

Advanced Tutorial

Offical Advanced Tutorial

Isolate processes

可以把Case定义为object, 在exec的时候传入多个

    val scn = scenario("Scenario Name").exec(Search.search, Browse.browse, Edit.edit)

Configure virtual users

setUp(users.inject(atOnceUsers(10)).protocols(httpConf))

setUp(
  users.inject(rampUsers(10) over (10 seconds)),
  admins.inject(rampUsers(2) over (10 seconds))
).protocols(httpConf)

Loop statements

Scenario Loops

Check and failure management

Http Check

class BenchmarkPost extends Simulation {
  val httpConf = http
    .baseURL("http://10.62.21.164:28080")
    .acceptHeader("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
    .doNotTrackHeader("1")
    .acceptLanguageHeader("en-US,en;q=0.5")
    .acceptEncodingHeader("gzip, deflate")

  val headers_common = Map("Content-Type" -> "application/json;charset=utf-8")

  val scn = scenario("Elasticsearch Proxy Post")
    .exec(
      http("request_post_1")
        .post("/put")
        .headers(headers_common)
        .queryParam("index", "notes")
        .queryParam("type", "doc")
        .queryParam("id", "0")
        .body(RawFileBody("post.json")).asJSON
        .check(
            status.not(500),
            status.not(502),
            status.not(504),
            jsonPath("$.code").ofType[Int].is(440).saveAs("code"),
            jsonPath("$.msg").ofType[String].is("session timeout")
        )
    )

  setUp(scn.inject(constantUsersPerSec(5000) during (180 seconds)).protocols(httpConf))
}

General

Offical General

Concepts

Concepts

Operations

OS Tuning: Open Files Limit & Kernel and Network Tuning

包含一些测试机需要调整的系统参数,例如: ulimit -n 10240

Configuration

配置文件、命令行参数

Simulation setup

Simulation Setup Simulation Setup 中文翻译

Injection 定义虚拟用户的操作:

Reports

怎么看测试报告

Use log file to generate report

Generates the reports for the simulation log file located in */results/*

➜  gatling-charts-highcharts-bundle-2.3.0 ll results/test
total 648
-rw-r--r--  1 jiangew  staff   322K Oct 17 18:29 simulation.log

➜  gatling-charts-highcharts-bundle-2.3.0 bin/gatling.sh -ro test
...
Generating reports...
...
Reports generated in 0s.
Please open the following file: /gatling/gatling-charts-highcharts-bundle-2.3.0/results/test/index.html

Reference

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