Hotspot JVM manageable 参数列表

 

JVM的manageable参数可以通过jmx进行修改（参见这里 ）

例如：

jinfo -flag +HeapDumpAfterFullGC ${java_pid} 开启HeapDumpAfterFullGC 

 

jinfo -flag -HeapDumpAfterFullGC ${java_pid}   关闭HeapDumpAfterFullGC 

 

 

 

此处列出所有的JVM中manageable的参数列表（参见openjdk ./hotspot/src/share/vm/runtime/globals.hpp）

JVM manageable parameters
参数	默认值	用途
HeapDumpBeforeFullGC	FALSE	Dump heap to file before any major stop-world GC
HeapDumpAfterFullGC	FALSE	Dump heap to file after any major stop-world GC
HeapDumpOnOutOfMemoryError	FALSE	Dump heap to file when java.lang.OutOfMemoryError is thrown
HeapDumpPath	null	When HeapDumpOnOutOfMemoryError is on, the path (filename or directory) of the dump file (defaults to java_pid<pid>.hprof in the working directory)
PrintGC	FALSE	Print message at garbage collect
PrintGCDetails	FALSE	Print more details at garbage collect
PrintGCDateStamps	FALSE	Print date stamps at garbage collect
PrintGCTimeStamps	FALSE	Print timestamps at garbage collect
PrintClassHistogramBeforeFullGC	FALSE	Print a class histogram before any major stop-world GC
PrintClassHistogramAfterFullGC	FALSE	Print a class histogram after any major stop-world GC
PrintClassHistogram	FALSE	Print a histogram of class instances
PrintConcurrentLocks	FALSE

另外，在JVM上的mbean： com.sun.management:type=HotSpotDiagnostic的DiagnosticOptions属性中，也可以看到这些属性