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50 lines
1.2 KiB
Plaintext
50 lines
1.2 KiB
Plaintext
.TH sh_wasted.d 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS"
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.SH NAME
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sh_wasted.d - measure Bourne shell elapsed times for "wasted" commands.
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.SH SYNOPSIS
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.B sh_wasted.d
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{ \-p PID | \-c cmd }
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.SH DESCRIPTION
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This script measures "wasted" commands - those which are called externally
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but are in fact builtins to the shell. Ever seen a script which calls
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/usr/bin/echo needlessly? This script measures that cost.
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Filename and call names are printed if available.
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.SH OS
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Any
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.SH STABILITY
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Evolving - uses the DTrace Shell provider, which may change
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as additional features are introduced. Check Shell/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 sh_wasted.d
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.PP
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.SH FIELDS
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.TP
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FILE
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Filename of the shell or shellscript
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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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TIME
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Total elapsed time for calls (us)
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.SH IDEA
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Mike Shapiro
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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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sh_wasted.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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