58 lines
1.2 KiB
Plaintext
58 lines
1.2 KiB
Plaintext
.TH j_calls.d 1m "$Date:: 2007-10-03 #$" "USER COMMANDS"
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.SH NAME
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j_calls.d - count Java calls (method/...) using DTrace.
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.SH SYNOPSIS
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.B j_calls.d
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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). Method calls and object allocation are only
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visible when using the flag "+ExtendedDTraceProbes". eg,
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java -XX:+ExtendedDTraceProbes classfile
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TYPEs:
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cload class load
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method method call
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mcompile method compile
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mload compiled method load
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oalloc object alloc
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thread thread start
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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_calls.d
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.PP
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.SH FIELDS
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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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TYPE
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Type of call (see below)
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.TP
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NAME
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Name of call
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.TP
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COUNT
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Number of calls during sample
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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_calls.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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