JBoss AS 5 Performance Tuning电子书

JBoss AS 5 Performance Tuning

Table of Contents

JBoss AS 5 Performance Tuning

Credits

About the Author

About the Reviewers

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Errata

Piracy

Questions

1. Performance Tuning Concepts

Preface

What you will get from this book?

What is performance?

Scalability: the other side of performance

The tuning process

Tuning in the software development cycle

Building the performance test

Establish a baseline

Collect data

How long should data collection last?

Analyze data

Configure and test again

Tuning Java Enterprise applications

Areas of tuning

Summary

2. Installing the Tools for Tuning

Welcome to scientific tuning

The rationale behind the choice of the tools

Profiling the Java Virtual Machine

Installing the JVM

Installing VisualVM

Connecting to a local server

Connecting to a remote server

Monitoring your server

The Monitor tab

The Threads tab

The Profiler tab

Collecting snapshots

Extending VisualVM

Profiling your applications with Eclipse Test and Performance Tools Platform (TPTP) Project

Installing the TPTP suite

Updating Eclipse

How to profile an application

Going beyond the basics of TPTP

Load testing your application with JMeter

Building a Test Plan

Step 1: Create a Thread Group

Step 2: Create a Sampler

Step 3: Create a Listener

Making your test plan a bit more realistic

How to create a complex Test Plan

Running JMeter as a shell

Operating system tools and commands

Windows users

Unix users

Dealing with low CPU utilization

Dealing with high CPU utilization

Dealing with high resource contention

Dealing with high disk utilization

Summary

3. Tuning the Java Virtual Machine

The starting point

Choosing the JVM settings

Setting the correct heap size

The correct amount of memory to grant your application

Step # 1: Finding the maximum heap (-Xmx)

Step # 2: Finding the initial heap size (-Xms)

I cannot allocate enough memory for the JVM!

Where do I configure JVM settings in JBoss AS?

Sizing the garbage collector generations

Which is the correct ratio between the young and old generations?

The garbage collector algorithms

Choosing the right garbage collector for your application

The G1 garbage collector

Debugging garbage collection

Making good use of the memory

Avoid creating large Java objects

Handling 'Out of Memory' errors

Finding the memory leak in your code

A practical example

Application description

Setting up a test bed

Benchmark aftermath

Consideration #1

Consideration #2

Action

Further optimization

Summary

4. Tuning the JBoss AS

From release 4.x to 5.x, and on

Comparing server releases

Creating a custom application server configuration

JBoss AS pools

The System thread pool

Finding out if the System thread pool is a bottleneck

JDBC connection pool

Calculating the optimal min-pool-size and max-pool-size

Using Prepared Statements efficiently

Two things to be aware of:

Detecting connection leaks

Should you reuse connections or acquire new ones from the pool?

Logging for performance

Choosing the best logging strategy

Which is the fastest appender?

Should I use the AsyncAppender to improve my log throughput?

Which layout should I choose for my logs?

Is it enough to increase the log threshold to get rid of log charge?

How does logging hierarchy influence performance?

Summary

5. Tuning the Middleware Services

Introduction to Enterprise Java Beans

Session Beans

How to configure the optimal size for stateless pool?

How to configure the optimal size of stateful cache?

Comparing SLSBs and SFSBs performance

When things get wilder

Is it possible that Stateful Beans are faster then Stateless Beans?

Session Beans and Transactions

Customizing JBoss EJB container policies

Customizing the single deployment unit

Introduction to the Java Messaging system

Entering the JBoss Messaging system

Tuning JBoss JMS provider

Tuning JBoss Messaging (JBoss AS 5.x)

How do you tune the JBoss Messaging Connection factory?

How do you tune JBoss Messaging destinations?

Tuning HornetQ (JBoss AS 6.x)

How to configure HornetQ journal for optimal performance?

How do you configure HornetQ transport for optimal performance?

Basic JMS tuning

An example use case with HornetQ

Summary

6. Tuning the Persistence Layer

Designing a good database

Reducing the space needed by your database

Partitioning the database

Using indexes

Tuning JDBC

Using a Connection Pool

Setting the proper fetch size

Use batch updates for bulk insert/updates

Use Prepared Statements instead of Statements

Tuning JDBC networking

Tuning Hibernate and JPA

Optimizing object retrieval

Limiting the amount of data fetched with pages

Fetching parent and child items with a single query

Combining join fetches and paging

Speeding up your Hibernate queries with batches

Using named queries to speed up your queries

Improving the performance of bulk SQL statements

Evaluating using caches to speed up your queries

Hibernate caches

The first-level cache

The second-level cache

Configuring the second-level cache on JBoss AS

The query cache

Entity cache versus query cache

Optimizing data synchronization

A sample use case

Summary

7. JBoss AS Cluster Tuning

Introduction to JBoss clustering

Configuring JGroups transport

How to optimize the UDP transport configuration

How to optimize the JGroups' Protocol stack

Tuning JBoss Cache

Understanding JBoss Cache configuration

Configuring cacheMode

Configuring cache concurrency

Configuring the isolationLevel

Tuning session replication

Override SFSB's isModified method

Use buddy replication

Advanced buddy replication

Buddy replication and session affinity

Configure replication granularity and replication trigger

How to configure the replication-trigger

How to configure the replication-granularity

Tuning cache storage

Where does cache data get stored?

Summary

8. Tomcat Web Server Tuning

JBoss Web server basics

Configuring Connectors for optimal performance

How do you calculate the threads for your application?

A concrete example

The long life of Web threads

Is there a maximum amount of connections the Web server can handle?

Using Apache Portable Runtime

Integrating JBoss Web server with Apache Web server

Load testing Apache-JBoss connectivity

mod_cluster to the rescue?

Last tips before rolling JBoss Web server in production

Summary

9. Tuning Web Applications on JBoss AS

Choosing a framework for your web applications

Comparing framework performance

The performance of tabular data

The performance of rich tree

Increasing the performance of JSF and RichFaces

Configuring JSF state saving efficiently

Using Ajax to speed up your JSF applications

Speeding up CSS and JavaScript file loading

Tuning web services

Performance of web services

Elements influencing the performance of web services

Reducing the size of SOAP messages

Faster JBossWS provider

The wisdom behind these benchmarks

Summary

A. A Tuned Mind

Index