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64 lines
1.5 KiB
Plaintext
64 lines
1.5 KiB
Plaintext
.TH j_classflow.d 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS"
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.SH NAME
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j_classflow.d - trace a Java class method flow using DTrace.
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.SH SYNOPSIS
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.B j_classflow.d
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classname
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.SH DESCRIPTION
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This traces activity from all Java processes on the system with hotspot
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provider support (1.6.0) and the flag "+ExtendedDTraceProbes". eg,
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java -XX:+ExtendedDTraceProbes classfile
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This watches Java method entries and returns, and indents child
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method calls.
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.SH OS
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Solaris
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.SH STABILITY
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Evolving - uses the DTrace hotspot provider, which may change
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as additional features are introduced. Check Java/Readme
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to see what version these scripts are based on.
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.SH EXAMPLES
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.TP
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Default output,
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#
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.B j_classflow.d
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.PP
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.SH FIELDS
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.TP
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C
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CPU-id
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.TP
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TIME(us)
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Time since boot, us
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.TP
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PID
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Process ID
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.TP
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CLASS.METHOD
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Java class and method name
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.SH LEGEND
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.TP
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\->
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method entry
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.TP
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<\-
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method return
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.SH WARNING
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Watch the first column carefully, it prints the CPU-id. If it
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changes, then it is very likely that the output has been shuffled.
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Changes in TID will appear to shuffle output, as we change from one thread
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depth to the next. See Docs/Notes/ALLjavaflow.txt for additional notes.
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.PP
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.SH DOCUMENTATION
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See the DTraceToolkit for further documentation under the
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Examples, Notes and Docs directories. The example files may be
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especially useful as they aim to demonstrate how to interpret
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the output.
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.SH EXIT
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j_classflow.d will run until Ctrl-C is hit.
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.SH AUTHOR
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Brendan Gregg
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[CA, USA]
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.SH SEE ALSO
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dtrace(1M)
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