async-profiler/async-profiler

Features

• Application Performance Profiling - Provides a sampling profiler to identify performance bottlenecks and measure execution time in Java applications.
• Memory Allocation Tracers - Tracks heap and native memory allocations within the JVM to detect memory leaks and allocation hotspots.
• Non-Pausing State Sampling - Implements non-blocking stack trace capture via internal JVM functions to avoid pausing application threads.
• JVM Architecture - Integrates with the JVM architecture to resolve native method frames and access internal symbols.
• Profiling Signal Handlers - Triggers sampling events using OS signals to ensure precise captures regardless of JVM safe-points.
• Hardware Performance Counter Integrations - Reads low-level processor and system counters to track hardware-level execution metrics and resource contention.
• PerfEvents Interfaces - Reads kernel-level hardware counters and CPU cycles via the Linux perf subsystem for high-precision timing.
• Performance Reporting - Exports profiling data into interactive visual reports including flame graphs and heatmaps.
• Performance Diagnostic Tools - Identifies resource bottlenecks by tracking contended locks and hardware performance counters.
• Flame Graph Visualizers - Generates interactive flame graphs from sampled stack traces to visualize frequent execution paths.

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