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

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Why is My Java Application Slow5 Monitoring Best Practices to Deliver a Great User Experience

Bala VaidhinathanCTO,

eG Innovations


Moderator

Christine AckleyDirector of Marketing OperationseG [email protected]


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Today’s Presenter

Bala VaidhinathanCTO eG [email protected]


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


Public cloudPrivate cloud

Virtualized

Browsers Locations Frameworks

Devices ProgrammingLanguages 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



Transaction Tracing



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



Transaction Tracing



Analytics

Transaction Tracing


ClassFileTransformer

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. WhenLoading…

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



Transaction Tracing



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


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


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



Transaction Tracing



Analytics



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.



ServerInfrastructure

Health

Application Processes

TCP

Network

Operating System

ApplicationInfrastructure Health

Server/Container

JVM

BusinessTransaction Health

App hosted onContainer

CUSTOM



Have the right mix of reach and depth when it comes to monitoring capabilities.

Monitor Java as a Service – Best Practice



Business Transaction

Tracing

Application Component Deep-Dive

Application Topology

Discovery/Visualization

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



Transaction Tracing



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


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

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