GC Analyzer

Analyze GC logs from major collectors to understand JVM memory behavior and identify performance bottlenecks.
The tool ingests standard GC logs, normalizes formats and time units, and computes key metrics such as total GC time, average and maximum pause, pause frequency, heap occupancy per generation, and allocation rates. It supports multiple collectors (Serial, Parallel, CMS, G1, ZGC) and auto-detects format for streamlined analysis.
Conceptually, it builds time-series representations of memory usage and GC phases, then applies simple statistical calculations and heuristics to highlight spikes, trends, and correlations with heap growth. The results facilitate root-cause analysis and capacity planning. Unique value lies in cross-collector normalization, actionable tuning guidance, and exportable reports, all processed locally in the browser or your environment for privacy.
Typical use cases include diagnosing long GC pauses in production, verifying memory sizing after code changes, and validating improvements from configuration tweaks. The tool emphasizes deterministic outputs, reproducible reports, and safe, non-intrusive analysis that complements profilers and live monitoring.