🧠Memory & JVM Guide
Kafka Memory & JVM Monitoring
Comprehensive guide to monitoring and optimizing Kafka broker JVM performance, memory usage, garbage collection, and heap management for maximum stability and throughput.
Critical JVM Monitoring Components
Monitor these essential JVM metrics for optimal Kafka performance.
Heap Memory Usage
Monitor heap allocation, utilization, and memory pressure across generations.
Garbage Collection
Track GC frequency, duration, and impact on Kafka broker performance.
Thread Management
Monitor thread pools, CPU usage, and concurrency patterns.
JVM Configuration Best Practices
Optimal JVM settings and garbage collector configuration for Kafka brokers.
Heap Configuration
Memory Settings
-Xms6g -Xmx6g
-XX:MaxMetaspaceSize=256m
-XX:CompressedOopsMode=64bitG1GC Configuration
-XX:+UseG1GC
-XX:MaxGCPauseMillis=20
-XX:G1HeapRegionSize=16mCritical JVM Alerts
- Heap usage above 80% threshold
- GC pause times exceeding 100ms
- OutOfMemoryError detection
- Thread deadlock identification
- CPU usage spikes during GC
JVM Performance Metrics
Real-time visibility into JVM health and performance characteristics.
Memory Metrics
Heap Used4.2GB / 6GB
Off-Heap Memory2.1GB
Metaspace89MB
Direct Memory512MB
GC Performance
GC Frequency12/min
Avg Pause Time8ms
GC Throughput99.2%
Active Threads156
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