WA1156 WebSphere v5 Performance Tuning for Developers Course Outline Chapter 1 - Standardized terminology Load Concurrent load Active load Throughput Pages per second. Transactions per second. Response time Path length Bottleneck Scaling Chapter 2 - JVM Memory Management Fundamentals Memory management by the operating system Virtual memory The page space The page in and page out process. IBM JDK 1.3 memory management details. Heap allocation Thread local storage Garbage collection mechanism Compaction Tuning parameters. Lab: Interpret verbosegc output Sun JDK memory management details. Heap allocation Garbage collection mechanism Compaction Tuning parameters. Lab: Interpret verbosegc output Coding practices for better memory related performance Shallow inheritance Short class path Minimize hidden objects Just In Time object creation. Rlease objects immediately Reuse objects More... Lab: Optimize Java code for memory usage. Chapter 3 - Profiling Profiling from WSAD Setup the environment Detecting memory leaks Detecting slow classes Detecting excessive object creation Lab: Detect memory leak and excessive object creation. Profiling from JProbe Setup the environment Detecting memory leaks Detecting slow classes Detecting excessive object creation Lab: Detect memory leak and excessive object creation. Chapter 4 - Impact of Java Language Construts Exceptions Type casting Assertion Comparative performance of stack, member and static variables. Tuning loops Recursion Collections Advantages of JDK1.3 colelction classes Presetting sizes Efficient HashMap traversal Sorting Lab: Efficient use of Java collections. Using a logging framework Log4J JRAS Optimize logging. Lab: Using Log4J Lab: Using JRAS Chapter 5 - Database Coding Practices Using a Data Source. Proper way of closing JDBC resources. Use transactions to wrap database activity JDBC transaction Session EJB facade Client controled EJB transaction Lab: Using Data Source and JDBC transaction. Using prepared statement Security Performance WebSphere's statement pooling Lab: Using Prepared Statements. Handling stale connection exception Lab: Handling stale connection exception. Avoid Two Phase Commit Chapter 6 - Servlet and JSP Making Servlets multi-thread aware Avoid thread serialization. How does WebSphere treat single threaded model. Lab: Fix multi-thread incompatibility in a Servlet. Using the init method. How to cache data and JNDI objects. Lab: Cache JNDI objects from the init method. Avoid Servlet logging Disable session in JSP Minimize JSP output size. Disable auto class reload. Chapter 7 - Session Management Session persistence in WebSphere Why we need session persistence? Database persistence Memory to memory replication Minimize session usage Discuss alternate techniques Cookie Hidden variable Relational table Lab: Modify session management code to use relational table. Lab: Modify session management code to use hidden variables. Implement java.io.Serializable Eliminate circular dependency Chapter 8 - EJB Local interfaces Lab: Creating an EJB that supports the local interface. How to cache data and JNDI objects. Lab: Caching JNDI objects. Understand WebSphere's object pooling Minimize system exception Enable pass by reference Session facade Access beans CMP EJB access intent Transaction isolation level Avoid stateful session bean CMP EJB caching Lab: Enable CMP data caching. Chapter 9 - WSAD Tuning Memory settings Closing projects Disable autobuild Disable verification More... Lab: Tune WSAD.