jvm.md

mkdocs.md

docs/java/jvm.md

@@ -3,7 +3,33 @@
 ## 查看默认配置
 
 ```sh
+# openjdk
 java -XX:+PrintFlagsFinal -version
+
+# IBM jdk
+java -verbose:sizes -version
 ```
 
+- [What's the default heap size for IBM's J9VM?](https://stackoverflow.com/questions/1572738/whats-the-default-heap-size-for-ibms-j9vm)
+
+# 查看进程 JVM 启动参数
+
+```sh
+jps -lvm
+
+jcmd -l
+jcmd $PID VM.system_properties
+jcmd $PID VM.flags
+
+jinfo -flags $PID
+```
+
+- [Getting the parameters of a running JVM](https://stackoverflow.com/questions/5317152/getting-the-parameters-of-a-running-jvm)
+- [Check JVM settings of running java process](https://makandracards.com/operations/531812-check-jvm-settings-running-java-process)
+
+## heap 和 非 heap 内存
+
+- [内存区域：Heap (堆区）](https://www.cnblogs.com/yanliang12138/p/14453698.html)
+- [JVM堆内存和非堆内存](https://xstarcd.github.io/wiki/Java/JVM_Heap_Non-heap.html)
+