Learning j meter in 60 minutes

@alongir785 Castro Street, Mountain View, CA 94041|1.855.445.2285|info@blazemeter.com
Learning JMeter in 60
Minutes

Alon Girmonsky
About Me
•  Hands-On Developer for the Past 20 Years
•  Expertise
– Large-Scale Web and Mobile Applications
– IP & Internet
•  Founder & CEO of BlazeMeter
– A Load Testing Platform as a Service
– 100% Compatible with Apache JMeter
USERS
50,000
TESTS
500,000

Comprehensive scripting at your fingertips
Any Script, Any Scenario
•  HTTP / HTTPS
•  Login / Signup
•  Form POSTing / Credit card transactions
•  Web services
•  Parameters extraction
•  Mobile
•  MSSQL,Oracle SQL,MySQL
•  Multiple user proﬁles
»  Any script
»  Any scenario
»  Any protocol
100% Apache JMeter Compatible

Download the Latest Release of JMeter
How to Install JMeter?
•  http://jmeter.apache.org/

The Thread Group
•  What is this? -A group of virtual users where each distinct user will
follow a certain business process
The Thread Group Properties:
Property Description
No of
Threads
The maximum number of threads that will run concurrently at
the end of the ramp up period
Ramp up The period is will take the load to ramp up from “idle” to
maximum load
Iterations The number of iteration each thread will execute
Duration The duration of the test from start to end
The Thread The sequence of events that comprise the simulated business
process

The Thread Group

The Sampler
•  What is this? -The actual request object with its properties
Supported Protocols:
•  HTTP
•  FTP
•  LDAP
•  MSSQL,MySQL,Oracle SQL
•  Mongo DB
•  SOAP/XML-RPC
•  Generic
•  SMTP
•  oAuth
•  Rest
•  TCP
•  UDP
•  Many many more

The Sampler

The Listener
•  What is this? -A fancy name for a report
•  Type of Listeners
–  Aggregated
–  Detailed
•  Use for debugging only
•  Consume a lot of memory
•  Use when you want to build custom reports (e.g.for errors only)

The Timer
•  What is this? -A fancy name for delay or think time
Type of Timers:
•  Constant
•  Constant Throughput
dd

Timers belong to a scope- We need to understand this
The Timer
•  Timers (as other controllers/elements) work in scope
•  Once put in scope,applies to every element in the scope
•  If scope is of one element,applies only to that element
Upper Scope Child Scope

Record Using a Proxy
•  A good way to start a script
•  Don’t forget to clean and parametrize

Record Using a Chrome Extension

Creating a Script Using a List of URLs

Necessary for Every Test
Test Defaults
Header

Getting your hands dirty with Apache JMeter
Practice: Writing Your First Script
Goal
•  Create a test simulating a gradual ramp up of up to 10 users against these two
pages:
–  http:// ..
–  http:// ..
How to go about it:
•  Use a proxy to record
•  Clean and label
•  Add the defaults
•  Add listeners and delays
•  Run
•  Analyze the results

175 Varick Street NY, NY 10013|1.855.445.2285|info@blazemeter.com
Advanced Scripting
Concepts

Single Iteration
Single Iteration Vs Continuous
Load
KPI: Number of Unique Users
•  Simulate a ramp up of unique
users
•  Low concurrency level
For Example:
•  I want only 25K users visiting my
website over 1 hour
Continuous
KPI: Load Level
•  Keep the load steady
•  High concurrency level
For Example:
•  I want a constant and steady load
of 25K users visiting my website
over 1 hour (I’ll probably end up
with 200K users in that hour)

Assertions
•  Deﬁne Proprietary Errors
•  Communicate Events

The best way to individualize each thread
Using CSV Files

External Properties
•  Pass external properties to the script
•  Customize same script to support various scenarios
Methods
•  Command line arguments (-J)
•  Properties ﬁle: user.properties

Extract from a page and use for the next page
Parameter Extraction

Variables
Variables and Properties
•  Usage: ${var}
•  Scope: unique per thread
Properties
•  Usage: ${__P(prop)}
•  Scope: Test
•  Pass external properties to the
script
•  Customize same script to support
various scenarios
Methods
•  Command line arguments (-J)
•  Properties ﬁle: user.properties

The Debug Sampler
Debugging
•  The developer’s best friend

Getting your hands dirty with Apache JMeter
Practice: Writing Your Second Script
Goal
•  Create a test simulating a gradual ramp up of up to 10 users logging in to:
–  http:// ..
How to go about it:
•  Use a proxy to record
•  Use RexEx to parameterize
•  Clean,label,add defaults, listeners and delays
•  Add a CSV ﬁle with user names and passwords
•  Use assertions to validate responses
•  Run
•  Analyze the results

Performance
1-on-1

The Load Sensitivity Point
What to look for?

Load Performance Types
Perfect
Time
Sensitive
Bad

Perfect
The Perfect Load
Time

Sensitive
Sensitive to Load
Time

Bad
Bad Performance
Time

Perfect
Here They Are Again
Time
Sensitive
Bad

Thank you for your time!
Jolt Awards 2013:
The Best Testing Tools
Thank you for attending.
We’ll send out an email with the recording and
the deck.
Q & A
For more information about Performance Testing and JMeter:
http://BlazeMeter.com/blog/
support@blazemeter.com
@BlazeMeter

Learning j meter in 60 minutes

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