1 views collected around this technical thread.
This guide walks you through using IntelliJ IDEA Ultimate’s built‑in Profiler to analyze Java CPU and memory performance, covering quick start steps, visualizations such as hotspot maps, call trees, method lists, timelines, real‑time charts, and exporting results as .jfr and .hprof files.
This article outlines systematic methods for diagnosing subtle performance issues by leveraging detailed data analysis of CPU, memory, disk I/O, and network metrics, and presents real-world case studies that demonstrate how targeted profiling and optimization can reveal and resolve hidden bottlenecks in complex systems.
The article offers a thorough guide to Android ANR analysis, detailing generation mechanisms, timeout thresholds, log examination techniques, and case studies of common causes such as idle main threads, long operations, lock contention, CPU preemption, memory pressure, and system‑service timeouts, providing practical diagnostic examples.
This comprehensive guide explains how to diagnose Linux system performance issues using a structured 5W2H approach, covering CPU, memory, disk I/O, network, load, and flame‑graph analysis, with practical command examples and a real‑world nginx case study.