chewiebug/GCViewer
GCViewer
GCViewer is a JVM garbage collection visualizer and memory analysis tool. It functions as a log parser and metrics exporter that transforms verbose JVM garbage collection logs into structured data, visual charts, and summary reports.
The project enables the visualization of heap size, generation usage, and collection timing through multi-line charts. It specifically tracks stop-the-world pause durations, concurrent collection cycles, and memory footprint to assist in detecting memory leaks and tuning heap sizes.
The tool covers log processing capabilities such as timestamp alignment and the concatenation of rotated log files. It also provides data export functionality, allowing parsed records to be serialized into CSV or plain text formats for external auditing.
Features
- JVM Memory Analysis - Analyzes JVM heap usage, generation sizes, and pause durations from garbage collection logs.
- Garbage Collection Monitors - Transforms JVM garbage collection log files into visual charts and summary reports for performance tuning.
- Multi-Chart Visualization Tools - Transforms processed memory and timing data into multi-line charts for comparative visual trend analysis.
- Java Garbage Collection Analysis - Analyzes Java GC logs to visualize memory management and identify causes of application latency.
- JVM Performance Tuning - Measures heap size and throughput from logs to optimize memory allocation and reduce pause times.
- Regex-Based Log Parsers - Extracts structured garbage collection events from raw text files using pattern matching and regular expression rules.
- GC Log Analyzers - Processes verbose garbage collection output and converts it into structured data for memory analysis.
- Memory Metric Plots - Plots heap size, generation usage, and collection timing over time using multi-line charts and event markers.
- Memory Leak Detection - Tracks heap usage and collection patterns over time to identify memory leaks in Java applications.
- GC - Creates text summaries and chart images from log files via a command-line interface for rapid performance audits.
- GC Pause Diagnosis Tools - Calculates stop-the-world pause durations and safepoint overhead to pinpoint causes of application latency.
- Concurrent Collection Tracking - Monitors the start, end, and total duration of collection cycles that occur while application threads are running.
- Stop-The-World Pauses - Calculates the frequency and duration of stop-the-world pause events to improve application responsiveness.
- Duration & Throughput Statistics - Computes stop-the-world pause durations and throughput statistics by summing individual event intervals from log streams.
- Rotated Log Sequence Handling - Reads multiple rotated log files as a single continuous sequence to maintain timeline continuity across file boundaries.
- Log Timestamp Normalization - Calculates event durations and absolute times by anchoring relative log timestamps to a user-defined start time.
- Rotated Log Parsers - Reads multiple sequential log files as a single continuous stream to maintain analysis across rotated log sets.
- JVM Profiling Tools - Visualizes verbose garbage collection output.
Star history
How this analysis was created: This summary and feature list were written by an AI model that read the project's README and public documentation pages. Each feature links to the documentation it came from; stars, license and language come straight from the GitHub API. The model does not read the source code, and the analysis is refreshed when the project is re-analysed. Learn more on our About page.
