Version Differences for Dumps From a Java Process

Revision as of 27 August 2012 09:45 ← Previous diff

Revision as of 11 September 2012 09:56 (Added thread/heap designation and updated Windows to have jmap) Next diff →

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	There may be different options for each type of Java installed. The commands listed below are known to work with the Java 6 JDK.		There may be different options for each type of Java installed. The commands listed below are known to work with the Java 6 JDK.
-	=== jstack ===	+	=== jstack (Thread Dump) ===
	Using 'jstack', which is part of the JDK, you can run:		Using 'jstack', which is part of the JDK, you can run:
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	There may be different options for each type of Java installed. The commands listed below are known to work with the Java 7 JDK.		There may be different options for each type of Java installed. The commands listed below are known to work with the Java 7 JDK.
-	=== jstack ===	+	=== jstack (Thread Dump) ===
	Using 'jstack', which is part of the JDK, you can run:		Using 'jstack', which is part of the JDK, you can run:
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	This command will then take a thread dump of the java process specified and dump it to the console. You may want to consider redirecting this output to a file with the ''>'' modifier.		This command will then take a thread dump of the java process specified and dump it to the console. You may want to consider redirecting this output to a file with the ''>'' modifier.
		+	=== jmap (Heap Dump) ===
		+	Using 'jmap', which is part of the JDK, you can run:
		+	'''jmap -dump:format=b,file='''''filename'' '''process-id#'''
		+	This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename').
	= *nix =		= *nix =
	This section lists methods to obtain dumps on *nix-based platforms		This section lists methods to obtain dumps on *nix-based platforms
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	There may be different options for each type of Java installed. The commands listed below are known to work with the Java 5 JDK.		There may be different options for each type of Java installed. The commands listed below are known to work with the Java 5 JDK.
-	=== jmap ===	+	=== jmap (Heap Dump) ===
	Using 'jmap', which is part of the JDK, you can run one of the following commands:		Using 'jmap', which is part of the JDK, you can run one of the following commands:
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	This command will then dump a summary of the current memory map to the console. While not as sophisticated as the later versions of java, it still provides some rudimentary functionality.		This command will then dump a summary of the current memory map to the console. While not as sophisticated as the later versions of java, it still provides some rudimentary functionality.
-	=== jstack ===	+	=== jstack (Thread Dump) ===
	Using 'jstack', which is part of the Java 5 JDK, you can run:		Using 'jstack', which is part of the Java 5 JDK, you can run:
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	There may be different options for each type of Java installed. The commands listed below are known to work with the Java 6 JDK.		There may be different options for each type of Java installed. The commands listed below are known to work with the Java 6 JDK.
-	=== jmap ===	+	=== jmap (Heap Dump) ===
	Using 'jmap', which is part of the JDK, you can run:		Using 'jmap', which is part of the JDK, you can run:
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	This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename').		This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename').
-	=== jstack ===	+	=== jstack (Thread Dump) ===
	Using 'jstack', which is part of the JDK, you can run:		Using 'jstack', which is part of the JDK, you can run:
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	There may be different options for each type of Java installed. The commands listed below are known to work with the Java 7 JDK.		There may be different options for each type of Java installed. The commands listed below are known to work with the Java 7 JDK.
-	=== jmap ===	+	=== jmap (Heap Dump) ===
	Using 'jmap', which is part of the JDK, you can run:		Using 'jmap', which is part of the JDK, you can run:
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	This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename').		This command will then dump the memory map of the target process-id# to an hprof file within the current directory (or specified directory if you expand on 'filename').
-	=== jstack ===	+	=== jstack (Thread Dump) ===
	Using 'jstack', which is part of the JDK, you can run:		Using 'jstack', which is part of the JDK, you can run: