Deoptimization Debugging: When JIT Compiled Code Reverts
Learn what causes the JVM to deoptimize JIT-compiled code, how to detect deoptimization events, and how to fix the underlying issues.
Posts in technical
Execution Engine: Interpreter, JIT Compiler, and Garbage Collector
Deep dive into the JVM Execution Engine covering bytecode interpretation, JIT compilation, and Garbage Collector architecture and algorithms.
GC Fundamentals: Mark-Compact, Copying, and Mark-Sweep
Understanding the three core garbage collection algorithms - Mark-Sweep, Mark-Compact, and Copying - their mechanics, trade-offs, and when to use each.
GC Logging Analysis: Decoding JVM Garbage Collection Logs
Master JVM garbage collection log analysis with -Xlog:gc, GCEasy, and GCViewer. Practical guide to diagnosing memory issues and tuning performance.
JVM GC Tuning: Heap Sizing and Threshold Optimization
Practical strategies for sizing JVM heap, tuning generation ratios, and optimizing GC thresholds to reduce pause times and improve throughput.
GraalVM Native Image
Understand ahead-of-time compilation with GraalVM Native Image and the Substrate VM runtime for near-instant startup and minimal memory footprint.
Heap Dump Analysis: Finding Memory Leaks with MAT, VisualVM
Complete guide to JVM heap dump analysis using Eclipse MAT, VisualVM, and YourKit for identifying memory leaks and optimization opportunities.
JVM Heap Memory: Young Gen, Old Gen, Metaspace, and Object Headers
A deep dive into JVM heap memory organization including Young Generation, Old Generation, Metaspace, and object header internals for performance optimization.
Heap Walking and Allocation Tracking: TLABs and Heap Analysis
Understand how the JVM allocates memory with TLABs, how to track allocations with low overhead, and how heap walking tools analyze object graphs.
Java Bytecode Fundamentals
Explore the low-level representation of Java code: op codes, the stack-based JVM architecture, and local variable table mechanics.