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jstat

17 articles · Page 1 of 1
Java Tech Workshop
Java Tech Workshop
Oct 2, 2026 · Fundamentals

Frequent Minor GC? The Real Culprits Are Allocation Rate and Premature Promotion

This article explains why frequent Minor GC in Java applications stems from high object allocation rates or premature promotion to old generation, not heap size, and details generational collection mechanics, promotion thresholds, dynamic age judgment, and troubleshooting using jstat, GC logs, and AsyncProfiler to pinpoint allocation hotspots.

Allocation RateAsyncProfilerGC Logs
0 likes · 18 min read
Frequent Minor GC? The Real Culprits Are Allocation Rate and Premature Promotion
Coder Trainee
Coder Trainee
Jun 26, 2026 · Backend Development

Java Performance Tuning: Practical Guide to Detecting and Fixing Memory Leaks

This article explains how to differentiate memory leaks from out‑of‑memory errors, identifies classic GC‑based leak signals, introduces a toolchain (jstat, jmap, MAT, Arthas, JProfiler), walks through a step‑by‑step investigation workflow, lists common leak patterns, presents a real‑world ThreadLocal leak case, and offers preventive measures such as monitoring, regular heap dumps, code review, and stress testing.

ArthasGCJava
0 likes · 9 min read
Java Performance Tuning: Practical Guide to Detecting and Fixing Memory Leaks
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Oct 9, 2023 · Backend Development

Master JDK Command-Line Tools for Java Troubleshooting

This guide explains how to use JDK command-line utilities such as jps, jstat, jinfo, jmap, jhat, and jstack to monitor JVM processes, inspect memory usage, generate heap dumps, and diagnose performance issues, providing command syntax, options, and practical examples.

command-line-toolsjmapjps
0 likes · 8 min read
Master JDK Command-Line Tools for Java Troubleshooting
Programmer DD
Programmer DD
Mar 10, 2022 · Operations

Master JDK Built‑in Tools to Diagnose Java Application Issues

This guide walks through using JDK's native command‑line and GUI utilities—such as jps, jinfo, jvisualvm, jstat, jstack, and jcmd—to monitor JVM performance, inspect GC behavior, analyze thread dumps, and troubleshoot memory configuration problems in Java programs.

JDK toolsJVM diagnosticsJVisualVM
0 likes · 16 min read
Master JDK Built‑in Tools to Diagnose Java Application Issues
Code Ape Tech Column
Code Ape Tech Column
Jun 20, 2021 · Backend Development

Master JVM Performance: Essential Tools and Real‑World Debugging Guide

This article introduces core JVM performance and monitoring utilities—including jps, jstack, jmap, jhat, jstat, and hprof—explains their command syntax, demonstrates practical steps to locate high‑CPU threads, analyze heap dumps, and interpret GC statistics, and provides concrete code examples for Java developers.

JVMJavajmap
0 likes · 13 min read
Master JVM Performance: Essential Tools and Real‑World Debugging Guide
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 2, 2021 · Backend Development

Master Java’s Built‑In Diagnostic Tools: jps, jstat, jinfo, jmap, jhat & jstack

This guide explains where Java's command‑line tools reside, why they are small wrappers around tools.jar, and provides detailed usage, options, and examples for the most common diagnostics utilities—including jps, jstat, jinfo, jmap, jhat, and jstack—helping developers monitor and troubleshoot JVM processes effectively.

JDKdiagnostic toolsjmap
0 likes · 7 min read
Master Java’s Built‑In Diagnostic Tools: jps, jstat, jinfo, jmap, jhat & jstack
Code Ape Tech Column
Code Ape Tech Column
Feb 26, 2021 · Operations

How Memory Tweaks Transform IntelliJ IDEA Performance: A Real‑World Test

This article presents a systematic experiment that compares four different IntelliJ IDEA memory configurations on a MacBook Pro, measuring IDE startup time, project loading speed, and JVM garbage‑collection metrics with jstat to identify the most efficient setup for large Java monoliths and micro‑service projects.

Garbage CollectionIDE performanceIntelliJ IDEA
0 likes · 11 min read
How Memory Tweaks Transform IntelliJ IDEA Performance: A Real‑World Test
Java Backend Technology
Java Backend Technology
Jan 5, 2021 · Backend Development

How Tweaking IntelliJ IDEA Memory Settings Supercharges Java IDE Performance

This article details a systematic experiment that compares default, modest, balanced, and aggressive JVM memory configurations for IntelliJ IDEA, measuring startup time, project load speed, and garbage‑collection behavior on a large monolith and micro‑service projects, and concludes with practical tuning recommendations.

IDE optimizationIntelliJ IDEAJVM
0 likes · 10 min read
How Tweaking IntelliJ IDEA Memory Settings Supercharges Java IDE Performance
Programmer DD
Programmer DD
Nov 12, 2020 · Operations

Mastering jstat: How to Monitor JVM Performance with Command-Line Options

This guide explains how to use the jstat command-line tool to monitor Java Virtual Machine performance metrics such as garbage collection, memory usage, and compilation time, detailing its syntax, options, intervals, counts, and providing concrete examples with expected outputs.

GC statisticsJVM monitoringJava performance
0 likes · 19 min read
Mastering jstat: How to Monitor JVM Performance with Command-Line Options
Java Backend Technology
Java Backend Technology
Oct 27, 2020 · Backend Development

Master JVM Performance: Essential Tools and Real-World Usage Guide

This article explains common JVM problems such as OutOfMemoryError, memory leaks, and thread deadlocks, then introduces core monitoring tools—jps, jstack, jmap/jhat, jstat, and hprof—detailing their syntax, options, and practical examples to help Java developers diagnose and tune production applications.

HprofJVMjmap
0 likes · 15 min read
Master JVM Performance: Essential Tools and Real-World Usage Guide
macrozheng
macrozheng
May 21, 2020 · Fundamentals

How Adjusting IntelliJ IDEA Memory Settings Boosts IDE Performance

This article reports a systematic experiment that compares four IntelliJ IDEA memory configurations on a large Java monolith and two micro‑services, measuring startup, project loading times and JVM garbage‑collection metrics with jstat to identify the most efficient setting.

IDE performanceIntelliJ IDEAJVM
0 likes · 11 min read
How Adjusting IntelliJ IDEA Memory Settings Boosts IDE Performance
Java Backend Technology
Java Backend Technology
May 14, 2020 · Fundamentals

How Memory Settings Impact IntelliJ IDEA Performance: A Practical Test

This article reports a systematic experiment that compares four IntelliJ IDEA memory configurations on a MacBook Pro, measuring startup time, project loading speed, and garbage‑collection behavior with jstat, and concludes that allocating more heap (2‑4 GB) significantly improves IDE responsiveness for large codebases.

IDE performanceIntelliJ IDEAJVM memory
0 likes · 11 min read
How Memory Settings Impact IntelliJ IDEA Performance: A Practical Test
Senior Brother's Insights
Senior Brother's Insights
Nov 10, 2019 · Backend Development

Master JVM Performance: Using jps, jstack, jmap, jstat & hprof

This guide introduces essential JVM performance monitoring tools—including jps, jstack, jmap, jhat, jstat, and hprof—explains their command syntax, demonstrates step‑by‑step usage with real‑world examples, and shows how to interpret their output to diagnose memory leaks, thread issues, GC behavior, and CPU hotspots.

HprofJVMPerformance Monitoring
0 likes · 14 min read
Master JVM Performance: Using jps, jstack, jmap, jstat & hprof
Full-Stack Internet Architecture
Full-Stack Internet Architecture
Jun 3, 2018 · Operations

JVM Statistics Monitoring Tool (jstat) Command Usage Guide

This article explains the jstat command syntax, options, and detailed parameter descriptions for monitoring JVM class loading, memory usage, garbage collection, JIT compilation, and other runtime statistics, providing examples and visual tables to help developers analyze Java process performance.

JVMJavaPerformance Monitoring
0 likes · 7 min read
JVM Statistics Monitoring Tool (jstat) Command Usage Guide