vmoption

查看/修改VM诊断相关的参数

命令选项

命令选项	描述
-h, --help	帮助
<option-name>	属性名
<option-name>	属性值

示例

# 查看所有VM诊断属性
[arthas@10580]$ vmoption

# 查看指定属性
[arthas@10580]$ vmoption HeapDumpBeforeFullGC
KEY                                        VALUE                                      ORIGIN                                     WRITEABLE
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
HeapDumpBeforeFullGC                       false                                      DEFAULT                                    true

# 修改属性
[arthas@10580]$ vmoption HeapDumpBeforeFullGC true
NAME                  BEFORE-VALUE  AFTER-VALUE
-------------------------------------------------
HeapDumpBeforeFullGC  false         true