Async-Profiler: Low-Overhead CPU and Memory Profiling
Learn async-profiler for low-overhead CPU and memory profiling in production. Generate flame graphs, analyze allocations, and diagnose JVM bottlenecks.
Posts tagged with #performance
CMS and G1 Collectors: Low-Latency Garbage Collection
How CMS and G1 garbage collectors reduce pause times through concurrent marking, region-based heap layout, and incremental compaction.
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.
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.
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.
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.
Java Flight Recorder: Continuous Monitoring and Diagnostics
Learn how Java Flight Recorder captures low-level diagnostics, profiling data, and continuous monitoring events from the JVM in production environments.
Java Mission Control: Flight Recordings and Heap Analysis
Complete guide to JDK Mission Control for flight recordings, heap analysis, and identifying hotspot methods in production Java applications.