Last Updated: November 21, 2025
Tools
| Tool | Purpose |
|---|---|
jstack
|
Thread dump |
jmap
|
Heap |
jcmd
|
Telemetry |
Commands
jstack -l
Dump threads
jmap -histo
Heap histogram
jcmd
GC.heap_info
Size info
Tips
Capture dumps during peak load and compare across runs.
💡 Pro Tip:
Enable heap dumps on OOM and analyze with jvisualvm.