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Common Parameter Reference
| reference | Explanation |
|---|---|
| -Xms | Initial heap size |
| -Xmx | The maximum heap |
| -xmn | The young generation heap size |
| -Xss | Set the thread stack size |
| -XX:MaxMetaspaceSize | Increase the size of metaspace |
| -XX:MaxDirectMemorySize=1m | Modify Direct Memory Size |
| -XX:NewRatio=1 | Modify the new generation and the old's ratio, the default ratio of 2 |
| -XX:SurvivorRatio=4 | Modify the proportion of eden and survivor, the default is 8 |
| -XX:+PrintGC | Print information GC, disabled by default |
| -XX:+PrintGCDetails | Print GC Details |
Recommended tools
Open source java diagnostic tool
Reference verification
- Through the above tool that is easy to find whether the reference set to take effect
