43740fd70977

执行jinfo -flag ++PrintGCDetails pid 报错，这个参数不能增加？

Exception in thread "main" com.sun.tools.attach.AttachOperationFailedException: flag 'PrintGCReason' cannot be changed

at sun.tools.attach.LinuxVirtualMachine.execute(LinuxVirtualMachine.java:229)
at sun.tools.attach.HotSpotVirtualMachine.executeCommand(HotSpotVirtualMachine.java:261)
at sun.tools.attach.HotSpotVirtualMachine.setFlag(HotSpotVirtualMachine.java:234)
at sun.tools.jinfo.JInfo.flag(JInfo.java:140)
at sun.tools.jinfo.JInfo.main(JInfo.java:81)

jinfo命令详解

jinfo jinfo全称Java Configuration Info，所以它的主要作用是实时查看和调整JVM配置参数， 查看JVM参数 用法：jinfo -flag <n...

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