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BEA JRockit SDK BEA 1.4.2 Documentation
> Tuning JRockit JVM
Tuning JRockit JVM
Introduction to Tuning BEA JRockit JVM
How BEA JRockit is Tuned
JVM Tuning Terminology
What You'll Find in Tuning BEA JRockit JVM
Tuning BEA JRockit JVM
Setting the Heap Size
Setting the Initial and Minimum Heap Size
Default
Setting the Maximum Heap Size
Heap Sizing Guidelines
Encountering OutOfMemory Errors
Default
Setting the Size of the Nursery
Default
Heap Sizing Guidelines
Defining When a Memory Space will be Cleared
Default
Setting the Thread Stack Size
Minimum Thread Size
Default
Basic Tuning Tips and Techniques
Determine What You Want to Tune For
Set the Heap Size
Tune the JVM
Tuning for High Responsiveness
Tuning for High Performance
Other Tuning Tips
Analyze the Performance by Using the JRA
Analyze Garbage Collection and Pause Times
Use -Xgcreport
Use -Xverbose:memory
Disable Lock Optimization if Your Application is Slow
Analyzing and Improving Application Performance
Alternate Methods of Analysis
Step 1: Find the Hotpaths
Find the Bottleneck Methods
Cluster the Bottleneck Methods Together into Hotpaths
Step 2: Prioritize the Hotpaths
Step 3: Fix the Hotpath
Step 4: Repeat Steps 1-3
