Why Is My Java App Slow? 5 Monitoring Best Practices for a Great User Experience

© eG Innovations, Inc | www.eginnovations.com
Why is My Java Application Slow
5 Monitoring Best Practices to Deliver a Great User Experience
Bala Vaidhinathan
CTO,
eG Innovations

Moderator
Christine Ackley
Director of Marketing Operations
eG Innovations
christine.ackley@eginnovations.com

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Logistics

Today’s Presenter
Bala Vaidhinathan
CTO
eG Innovations
bala@eginnovations.com

 Java Application performance monitoring today
 Why Java Monitoring is easier said than done?
 5 monitoring best practices for troubleshooting and
avoiding “Java application is slow” problems
 Q&A
Agenda

Down-time : $21,000 Slow-time : $4,100
Average revenue loss due to 1 hour of:
However, slowness occurs 10 times more often than downtime.
A 1 sec delay in response time decreases customer satisfaction
by 16%, reduces conversions by 7%.
Slow-Time vs. Down-Time

Easier
Said Than
Done!
Great Application Performance is

Virtualized
Browsers Locations Frameworks
Devices
Programming
Languages
Platforms
Infrastructure & Application Evolution
Poses Challenges

 A failure or a slowdown in a virtual infrastructure is far more
severe than in a physical infrastructure
Physical Virtual
 Configuration of VMs can make a big impact on performance;
changes to configuration are hard to track
Virtualization Introduces New Challenges

Great User Experience
Focus of Performance Monitoring Today

Silo-based Views No Longer Sufficient

When Java Application is Slow …
 Is it due to the client device/application?
 Is it the server application code
 Is it in the database queries?
 Is it due to the application platform/
framework?
 Is it due to the virtual/cloud platform?
 Is there a slowness in the local or regional
network?
 Could it be due to storage?

How to Achieve
Java Performance
Monitoring
Success?

End User
Experience
Monitoring
Transaction
Tracing
Java
Container
Deep-Dive
Java
Application
as a Service
Analytics
Java Monitoring – 5 Best Practices

End User
Experience
Monitoring
Transaction
Tracing
Java
Container
Deep-Dive
Java
Application
as a Service
Analytics
End User Experience

 Emulates users
 Imposes the same workload again
and again
 Provides a measure of experience
EVEN when there is no real load
Synthetic Monitoring
 Monitors real users
 Actual workloads
 Direct measure of what users
are seeing
Real User MonitoringSynthetic Monitoring
User Experience Monitoring

Use a combination of synthetic and real user monitoring
approaches to gain a complete view of the user experience.
Synthetic Monitoring Real User MonitoringSynthetic Monitoring
User Experience - Best Practice

Consider this scenario:
 Users access web site, place orders
 Order processing happens in the
background as an asynchronous
process.
 What happens when order processing
fails?
 User Experience Monitoring still
indicates that all is OK, despite
the failure of orders.
Monitoring the user experience is not sufficient.
Track your critical business processes as well.
INVENTORY
HANDLING
User Experience - Best Practice

End User
Experience
Monitoring
Transaction
Tracing
Java
Container
Deep-Dive
Java
Application
as a Service
Analytics
Transaction Tracing

ClassFile
Transformer
 Application is not modified
 Introduces some overhead
 Tag and follow transactions
 Ideal when problems are
in the application code
Using byte-code instrumentation
JVM
ClassLoader
Class A
Class B
Class C
Agent
1. Premain
2. addTransformer
5. redefineClass
4. transform
3. When
Loading…
Business Transaction Tracing

 Transaction tracing is very important for identifying coding
issues and poor database queries.
 May not provide true end-to-end visibility for off-the-shelf
applications like SAP, PeopleSoft, etc.
 3% - number of respondents to Gartner’s APM Survey who
ranked this as #1 priority for APM.
Use transaction tracing as one part (not the only part) of your
end-to-end application performance monitoring strategy.
Transaction Tracing - Best Practice

End User
Experience
Monitoring
Transaction
Tracing
Java
Container
Deep-Dive
Java
Application
as a Service
Analytics
Java Container – Deep Dive

Apps hosted on Container
Server/ Container
JVM
Application Processes
TCP
Network
Operating System
Java “Application user transactions” health1
Java application monitoring spans
multiple layers
Java “Application Infrastructure” health2
“IT Infrastructure” health3

Application server metrics provide insight into the performance
of the application’s container including:
 Datasource / Connection pool
 Web connectors
 Sub-systems such as
 EJB
 Messaging
 Container Managed Transactions
Apps hosted on
Container
Server/
Container
JVM
What is Container monitoring?

 The JVM is a key ‘underpinning’ of any java application.
 JVM tuning is necessary anytime there is a:
 Application update
 JVM version change
 Operating system change
 JVM monitoring includes:
 Garbage Collection. By far, the most intrusive activity upon a java
application’s performance.
 JVM Memory
 JVM Threads
 JVM CPU Usage
 Class Loading
Apps hosted on
Container
Server/
Container
JVM
What is JVM monitoring?
(Comprehensive list follows in later slides)

“JVM is a critical component
in the software stack, it
should be monitored as much
as the application itself and
the operating system”
Why is JVM monitoring important ?
- Charlie Hunt, JVM Performance Lead Engineer at Oracle
Java Performance Guru & author

End User
Experience
Monitoring
Transaction
Tracing
Java
Container
Deep-Dive
Java
Application
as a Service
Analytics
Java Application as a Service

Application Monitoring = Transaction
Tracing
Suppose there is an infrastructure issue – say a database-wide slowdown.

Transaction tracing will NOT point to the root-cause of an
infrastructure problem.
Tracing

Server
Infrastructure
Health
Application Processes
TCP
Network
Operating System
Application
Infrastructure Health
Server/Container
JVM
Business
Transaction Health
App hosted on
Container
CUSTOM
Tracing

Have the right mix of reach and depth when it comes to
monitoring capabilities.
Monitor Java as a Service – Best Practice

End User
Experience
Monitoring
Business
Transaction
Tracing
Application
Component
Deep-Dive
Application
Topology
Discovery/Vi
sualization
IT Analytics
Application Performance Monitoring
Framework

 Auto-baselining
 Automatic correlation
 Prediction
 Capacity analysis
 Historical reporting
 Bottleneck detection
 Optimization recommendations
IT Analytics

Automatic, time
varying baselines
make monitoring
PROACTIVE
Auto-Baselining for Proactive Alerting

A few of the servers
are handling most of
the sessions
Make Optimization Decisions Based on
Empirical Data

Invest Wisely with Capacity Analytics

IT Analytics is 2nd in importance to user experience!
Look for monitoring tools that reduce your burden by automating
analysis and providing you actionable insights.
IT Analytics – Best Practice

End User
Experience
Monitoring
Transaction
Tracing
Java
Container
Deep-Dive
Java
Application
as a Service
Analytics
Java Monitoring - 5 Best Practices - Recap

 Ensure great user experience
 Detect problems before users notice –
be proactive
 Resolve problems quickly, keep MTTR
low
 Handle problems with fewer people,
less expertise
 Plan/invest wisely for growth
Benefits of Java Application Performance
Monitoring Success

Free Trial
http://www.eginnovations.com/freetrial
Send an Email
info@eginnovations.com
Call Us
+1 (866) 526 6700
Next Steps

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Why Is My Java App Slow? 5 Monitoring Best Practices for a Great User Experience

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