Find the Bottleneckof Your System

Load / Stress Test with JMeter

StarNight

Who am I?

潘建宏 / Jian-Hong Pan (StarNight)About Me : http://about.me/StarNight

出沒在～

GitHub : starnightPTT : zack2004plurk : StarNightFacebook : StarNight

目前繼續在種花店當個打雜園丁 ～

Outline

● The Bottleneck● Web / HTTP(S)

○ Request / Response Header and Body

● Load / Stress Test● Apache JMeter

○ Installation○ UI Description○ Test Plan○ Read Result○ Parsing and Variables

The Bottleneck

● The operation of a system is the cooperation between many parts.

○ Nodes(Termial, Server)：Clients, Server, DB○ Connections(Communication)

● The whole system will reach the planned efficiency, only if each part meets the planned efficiency criteria.

DBServer

(Web AP)Clients

PossibleBottleneck

Possible BottleneckPossible Bottleneck

Possible Bottleneck Possible Bottleneck

Web / HTTP(S)

● It is the protocol between Client and Web Servers

○ W3C: HTTP Specifications and Drafts○ IETF: RFC 2616 Hypertext Transfer Protocol / 1.1

■ 4.2 Message Headers, 4.3 Message Body■ 5.1.1 Method■ 6.1.1 Status Code and Reason Phrase

● HTTPS: Use SSL certificate to encrypt HTTP

Server(Web AP)Clients

HTTP(S) Request

HTTP(S) Response

HTTP Request Header & Body we can see

Secured HTTP Request Header & Body

Even though the HTTP is encrypted, you still see the plain text in the browser

● Composite of○ Request-Line

■ Method sp Request-URI sp HTTP-Version○ general-header | request-header | entity-header○ message-body

● Method○ OPTIONS, GET, HEAD, POST, PUT, DELETE,

TRACE, CONNECT

● Request-URI○ "*" | absoluteURI | abs_path | authority

● Content-Type

HTTP Request (5)

HTTP Response (6)

● Composite of○ Status-Line

■ HTTP-Version sp Status-Code sp Reason-Phrase○ general-header | response-header | entity-header○ message-body

● Status Code and Reason Phrase○ 1xx: Informational○ 2xx: Success○ 3xx: Redirection○ 4xx: Client Error○ 5xx: Server Error

Load / Stress Test

● Load Test○ Load testing examines the entire environment and

database, while measuring the response time.

● Stress Test○ Stress testing focuses on identified transactions,

pushing to a level so as to break transactions or systems.

DBServer

(Web AP)Clients

Super Node

HTTP(S) Request

HTTP(S) Response

probe probeprobe

Flow Generator

Apache JMeter

● Java application designed to load test functional behavior and measure performance.It was originally designed for testing Web Applications but has since expanded to other test functions.

● http://jmeter.apache.org/● Apache License Version 2.0● Getting Started (User’s Manual)

Open Source is Awesome!

Installation

● Download Page:○ http://jmeter.apache.org/download_jmeter.cgi

● Requires Java 6 or later

● Excute bin/jmeter.sh or bin/jmeter.bat

● Using JMeter behind a proxy○ Append the arguments “--proxyHost ProxyServer --

proxyPort ProxyPort” after the ApacheJMeter.jar command in bin/jmeter.sh or bin/jmeter.bat

UI DescriptionTest Plan related: Thread, Query Script, Header ...

Workbench to make Test Plan

How to run the Test Plan

Global User Defined Variables

Start / Stop Test Clear Test Result

Test Plan - Thread Group

Test Plan - Test Script Recorder

Browser

JMeter Proxy

Target

Client

X

There are only HTTP requests and Responsein the World Wide Web.

Open a browser which will go through this proxy

Test Plan - HTTP Request

Test Plan - HTTP Cookie Manager

Cookie - SessionIETF: RFC 6265 / 8.4

Test Plan - HTTP Request Defaults

Variables Default Values

Test Plan: Many other scenarios

● How to use a CSV file with JMeter○ Many usernames and paswwords for exmaple

● Upload and Download Scenarios with Apache JMeter○ Upload files tests

● And so on ...

Test Plan - View Results Tree

Test Plan - Summary Report

Many other listeners ...

Run the Test Plan

Read Result - View Results Tree

Read Result - Summary Report

Parsing

Extract Variables

(.*?)Variables will beURL_g1, URL_g2

Place Variables

${URL_g1}

${URL_g2}

Verify Variables

Apache Ant

● 5 Ways To Launch a JMeter Test without Using the JMeter GUI

● JMeter Ant Task● To have a test report in HTML

form● One may need to add Ant into

the enviroment variable PATH

Use JMeter Ant addon

1. Download Apache Ant and install it2. Add Ant’s directory into PATH3. Use the command line:

a. cd Apache JMeters’s extras directoryb. ant -Dtest=Test Plan’s File Name -Dtestpath=Path of

the Test Plan’s File

For example: I put the test.jmx on my desktop$ cd C:\Users\jhpan\Desktop\apache-jmeter-2.13\extras$ ant -Dtest=test -Dtestpath=C:\Users\jhpan\Desktop

Thank you ~