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Diagnose a Java application: CPU, memory, GC v1.0.0

Use this resource to find the cause of CPU spikes, memory leaks, deadlocks or slowness in a Java application

New

  • 431 downloads
  • 165 likes
  • 121 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install jvm-runtime-diagnostics

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent starts from the symptom and picks the lightest tool that answers the question: jcmd, jstack, jmap, JFR, GC logs or async-profiler. It respects permission tiers, starts with read-only checks and flags operations that may pause the application. It also covers containers.

Mostly picked by

Updated November 2, 2026

Card for the “Diagnose a Java application: CPU, memory, GC” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: permission tiers, decision table and workflow
  • references/heap.md, gc.md, thread-dumps.md and native-memory.md: guides by symptom
  • references/jfr.md, async-profiler.md and containers.md: tools and containers

Good fit for

  • Your Java application uses more and more memory
  • Requests get slow without any visible error

Not for

    Tags

    • java
    • jvm
    • performance
    • memory

    About

    You say

    “My Java service has been pegging the CPU for an hour: suggest the lightest diagnostic to find the culprit.”

    Card for the “Diagnose a Java application: CPU, memory, GC” skill

    Skill published by github under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to find the cause of CPU spikes, memory leaks, deadlocks or slowness in a Java application
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/async-profiler.md3 KB
    • references/containers.md1.7 KB
    • references/gc.md1.6 KB
    • references/heap.md3 KB
    • references/jcmd-basics.md1.9 KB
    • references/jfr.md2.3 KB
    • references/native-memory.md1.5 KB
    • references/thread-dumps.md3.3 KB
    • SKILL.md7.2 KB

    Origin and licence

    Listed unmodified

    Author
    github
    Source
    github.com/github/awesome-copilot/tree/0fe6545b950671641b2b14b44eb56678fea6c6b4/skills/java-diagnostics
    Licence
    MIT

    Notice

    « java-diagnostics » (github, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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