Gatling でぶっ放せ！ #Java

What's this?

Java/Scala 製の負荷テストツール http://gatling.io

Install Java
Install/Setup Gatling
負荷テスト実施
Install/Setup nginx
負荷テスト結果をブラウザで確認

Install java

# yum install java
==================================================================================================================================
 Package                                   Arch                 Version                               Repository             Size
==================================================================================================================================
Installing:
 java-1.8.0-openjdk                        x86_64               1:1.8.0.71-2.b15.el7_2                updates               217 k
Installing for dependencies:
 giflib                                    x86_64               4.1.6-9.el7                           base                   40 k
 java-1.8.0-openjdk-headless               x86_64               1:1.8.0.71-2.b15.el7_2                updates                31 M
 javapackages-tools                        noarch               3.4.1-11.el7                          base                   73 k
 libICE                                    x86_64               1.0.9-2.el7                           base                   65 k
 libSM                                     x86_64               1.2.2-2.el7                           base                   39 k
 libXext                                   x86_64               1.3.3-3.el7                           base                   39 k
 libXfont                                  x86_64               1.5.1-2.el7                           base                  150 k
 libXi                                     x86_64               1.7.4-2.el7                           base                   40 k
 libXrender                                x86_64               0.9.8-2.1.el7                         base                   25 k
 libXtst                                   x86_64               1.2.2-2.1.el7                         base                   20 k
 libfontenc                                x86_64               1.1.2-3.el7                           base                   30 k
 lksctp-tools                              x86_64               1.0.13-3.el7                          base                   87 k
 python-javapackages                       noarch               3.4.1-11.el7                          base                   31 k
 python-lxml                               x86_64               3.2.1-4.el7                           base                  758 k
 ttmkfdir                                  x86_64               3.0.9-42.el7                          base                   48 k
 tzdata-java                               noarch               2015g-1.el7                           base                  176 k
 xorg-x11-font-utils                       x86_64               1:7.5-20.el7                          base                   87 k
 xorg-x11-fonts-Type1                      noarch               7.5-9.el7                             base                  521 k

Transaction Summary
==================================================================================================================================
Install  1 Package (+18 Dependent packages)

Install/Setup Gatling

Download

http://gatling.io/#/download

# wget https://oss.sonatype.org/content/repositories/snapshots/io/gatling/highcharts/gatling-charts-highcharts-bundle/2.2.0-SNAPSHOT/gatling-charts-highcharts-bundle-2.2.0-20160115.153229-389-bundle.zip
# unzip gatling-charts-highcharts-bundle-2.2.0-20160115.153229-389-bundle.zip
# cd gatling-charts-highcharts-bundle-2.2.0-SNAPSHOT

Create simulation file

Sample simulation file が user-files/simulations/ にあるので、これを参考に作ってみる。

# tree user-files/simulations/
user-files/simulations/
└── computerdatabase
    ├── advanced
    │   ├── AdvancedSimulationStep01.scala
    │   ├── AdvancedSimulationStep02.scala
    │   ├── AdvancedSimulationStep03.scala
    │   ├── AdvancedSimulationStep04.scala
    │   └── AdvancedSimulationStep05.scala
    └── BasicSimulation.scala

2 directories, 6 files

Sample をコピーして、

# cd user-files/simulations/
# cp computerdatabase/BasicSimulation.scala TestSimulation.scale

# vi TestSimulation.scale

とりあえず Simple にこんな感じで。

# cat TestSimulation.scala
import io.gatling.core.Predef._
import io.gatling.http.Predef._
import scala.concurrent.duration._

class TestSimulation extends Simulation {

  val httpConf = http
    .baseURL("http://<負荷テスト対象の URL>") // Here is the root for all relative URLs
    .acceptHeader("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8") // Here are the common headers
    .doNotTrackHeader("1")
    .acceptLanguageHeader("en-US,en;q=0.5")
    .acceptEncodingHeader("gzip, deflate")
    .userAgentHeader("Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:16.0) Gecko/20100101 Firefox/16.0")

  val headers_10 = Map("Content-Type" -> "application/x-www-form-urlencoded") // Note the headers specific to a given request

  val scn = scenario("Test Scenario") // A scenario is a chain of requests and pauses
    .exec(http("request_1")
      .get("/"))
    .pause(7) // Note that Gatling has recorded real time pauses

  setUp(scn.inject(
    rampUsers(600) over(60)
  ).protocols(httpConf))
}

最後の部分 Injection の意味

rampUsers(600) over(60 seconds)) : 60 秒間に 600 回アクセス
rampUsersPerSec(1) to (100) during (60 seconds) : 60 秒間で 1〜100 までユーザ増やしてアクセス
constantUsersPerSec(10) during(60 seconds) : 1 秒間で 10 ユーザのアクセスを 60 秒キープ

その他はこちらを参考に。
http://gatling.io/docs/2.1.7/general/simulation_setup.html

〜〜例〜〜

setUp(
  scn.inject(
    nothingFor(4 seconds), // 1
    atOnceUsers(10), // 2
    rampUsers(10) over(5 seconds), // 3
    constantUsersPerSec(20) during(15 seconds), // 4
    constantUsersPerSec(20) during(15 seconds) randomized, // 5
    rampUsersPerSec(10) to 20 during(10 minutes), // 6
    rampUsersPerSec(10) to 20 during(10 minutes) randomized, // 7
    splitUsers(1000) into(rampUsers(10) over(10 seconds)) separatedBy(10 seconds), // 8
    splitUsers(1000) into(rampUsers(10) over(10 seconds)) separatedBy atOnceUsers(30), // 9
    heavisideUsers(1000) over(20 seconds) // 10
  ).protocols(httpConf)
)

The building blocks for profile injection the way you want are:

nothingFor(duration): Pause for a given duration.

atOnceUsers(nbUsers): Injects a given number of users at once.

rampUsers(nbUsers) over(duration): Injects a given number of users with a linear ramp over a given duration.

constantUsersPerSec(rate) during(duration): Injects users at a constant rate, defined in users per second, during a given duration. Users will be injected at regular intervals.

constantUsersPerSec(rate) during(duration) randomized: Injects users at a constant rate, defined in users per second, during a given duration. Users will be injected at randomized intervals.

rampUsersPerSec(rate1) to (rate2) during(duration): Injects users from starting rate to target rate, defined in users per second, during a given duration. Users will be injected at regular intervals.

rampUsersPerSec(rate1) to(rate2) during(duration) randomized: Injects users from starting rate to target rate, defined in users per second, during a given duration. Users will be injected at randomized intervals.

heavisideUsers(nbUsers) over(duration): Injects a given number of users following a smooth approximation of the heaviside step function stretched to a given duration.

splitUsers(nbUsers) into(injectionStep) separatedBy(duration): Repeatedly execute the defined injection step separated by a pause of the given duration until reaching nbUsers, the total number of users to inject.

splitUsers(nbUsers) into(injectionStep1) separatedBy(injectionStep2): Repeatedly execute the first defined injection step (injectionStep1) separated by the execution of the second injection step (injectionStep2) until reaching nbUsers, the total number of users to inject.

Run Gatling

最終的に HTML ファイルが結果として出力される。

# pwd
/PATH/TO/gatling-charts-highcharts-bundle-2.2.0-SNAPSHOT

# bin/gatling.sh
GATLING_HOME is set to /PATH/TO/gatling-charts-highcharts-bundle-2.2.0-SNAPSHOT
Choose a simulation number:
     [0] TestSimulation
     [1] computerdatabase.BasicSimulation
     [2] computerdatabase.advanced.AdvancedSimulationStep01
     [3] computerdatabase.advanced.AdvancedSimulationStep02
     [4] computerdatabase.advanced.AdvancedSimulationStep03
     [5] computerdatabase.advanced.AdvancedSimulationStep04
     [6] computerdatabase.advanced.AdvancedSimulationStep05
0
Select simulation id (default is 'testsimulation'). Accepted characters are a-z, A-Z, 0-9, - and _

Select run description (optional)

Simulation TestSimulation started...

================================================================================
2016-01-30 01:56:38                                           5s elapsed
---- Test Scenario -------------------------------------------------------------
[###--                                                                     ]  4%
          waiting: 565    / active: 10     / done:25
---- Requests ------------------------------------------------------------------
> Global                                                   (OK=35     KO=0     )
> request_1                                                (OK=35     KO=0     )
================================================================================

〜〜 省略 〜〜

================================================================================
2016-01-30 01:57:35                                          62s elapsed
---- Test Scenario -------------------------------------------------------------
[##########################################################################]100%
          waiting: 0      / active: 0      / done:600
---- Requests ------------------------------------------------------------------
> Global                                                   (OK=600    KO=0     )
> request_1                                                (OK=600    KO=0     )
================================================================================

Simulation TestSimulation completed in 61 seconds
Parsing log file(s)...
Parsing log file(s) done
Generating reports...

================================================================================
---- Global Information --------------------------------------------------------
> request count                                        600 (OK=600    KO=0     )
> min response time                                      2 (OK=2      KO=-     )
> max response time                                     52 (OK=52     KO=-     )
> mean response time                                     3 (OK=3      KO=-     )
> std deviation                                          2 (OK=2      KO=-     )
> response time 50th percentile                          3 (OK=3      KO=-     )
> response time 75th percentile                          3 (OK=3      KO=-     )
> mean requests/sec                                9836.066 (OK=9836.066 KO=-     )
---- Response Time Distribution ------------------------------------------------
> t < 800 ms                                           600 (100%)
> 800 ms < t < 1200 ms                                   0 (  0%)
> t > 1200 ms                                            0 (  0%)
> failed                                                 0 (  0%)
================================================================================

Reports generated in 0s.
Please open the following file: /PATH/TO/gatling-charts-highcharts-bundle-2.2.0-SNAPSHOT/results/testsimulation-1454086593318/index.html

.class は target/test-classes/ の下に作成される。

# ls -l target/test-classes/TestSimulation.class
-rw-r--r-- 1 root root 6140 Jan 30 01:55 target/test-classes/TestSimulation.class

Install/Setup nginx

出力された結果をそのまま確認しても問題ないが、
複数回実施した結果をブラウザで直接すぐに確認する為に nginx を設定

Install

# yum install nginx

==================================================================================================================================
 Package                                   Arch                     Version                          Repository              Size
==================================================================================================================================
Installing:
 nginx                                     x86_64                   1:1.6.3-7.el7                    epel                   507 k
Installing for dependencies:
 GeoIP                                     x86_64                   1.5.0-9.el7                      base                   709 k
 fontconfig                                x86_64                   2.10.95-7.el7                    base                   228 k
 fontpackages-filesystem                   noarch                   1.44-8.el7                       base                   9.9 k
 gd                                        x86_64                   2.0.35-26.el7                    base                   146 k
 gperftools-libs                           x86_64                   2.4-7.el7                        base                   272 k
 libXpm                                    x86_64                   3.5.11-3.el7                     base                    54 k
 libunwind                                 x86_64                   1.1-5.el7                        base                    56 k
 libxslt                                   x86_64                   1.1.28-5.el7                     base                   242 k
 nginx-filesystem                          noarch                   1:1.6.3-7.el7                    epel                    15 k

Transaction Summary
==================================================================================================================================
Install  1 Package (+9 Dependent packages)

結果を格納する Directory 作成

# mkdir /usr/share/nginx/html/gatling

autoindex を enable にしておく

# vi /etc/nginx/nginx.conf

        location / {
            autoindex on;   <-- ADD
        }

start nginx

# systemctl start nginx
# systemctl enable nginx

Gateing の結果を nginx へコピー

# cp -rp /PATH/TO/gatling-charts-highcharts-bundle-2.2.0-SNAPSHOT/results/testsimulation-1454086593318 /usr/share/nginx/html/gatling/

Add http permit policy to firewalld

# firewall-cmd --zone=public --add-service=http --permanent
success

# firewall-cmd --reload
success

# firewall-cmd --list-service
http ssh

結果

Environment

os

# cat /etc/redhat-release
CentOS Linux release 7.1.1503 (Core)

java

# /usr/bin/java -version
openjdk version "1.8.0_71"
OpenJDK Runtime Environment (build 1.8.0_71-b15)
OpenJDK 64-Bit Server VM (build 25.71-b15, mixed mode)

nginx

# nginx -v
nginx version: nginx/1.6.3

gatling

gatling-charts-highcharts-bundle-2.2.0-20160115.153229-389-bundle.zip

Reference

http://gatling.io/#/docs